Use of a Mobile Waste Incineration System for a Site …infohouse.p2ric.org/ref/28/27220.pdf1 1 3 3...

16
1 1 3 '3 5 James F. M a r t i n ENSCO/Pyro tech Frank1 in, TN ABSTRACT USE OF A MOBILE WASTE INCINERATION SYSTEM FOR A SITE CLEAN-UP Operational plans for a program to clean up an abandoned waste site by usin mobile incineration equipment are discussed. A description of a trailer mounted and can be set on a site i n a matter of days The incinerations system i s unique i n that the energy from the incineration process i s recovered and as used t o drive the system prime mover and exhaust gas clean-up equl pment mobi iJ e waste incineration system i s presented. It i s preassembled, NATURE OF SITE The site that i s to be cleaned-up consists of two lagoons identified as the Se tage Pond and the Oil Pond. The approximate areas o f the ponds are 1 .! and 0 6 acre ( .61 and .24 hectare) respectively. Liquid wastes, consisting of oils, greases, and bilge tank wastes were pumped into the pits over a period of years. The site layout i s shown in Figure 1. An unused p i t and numerous groundwater monitoring wells are also on site. It had been determined that the potentiai existed for the leakage o f contaminants into the local ground water supply. However, no hazardous materlals had been identified i n previous sampling studies. The Septa e Pond has an average depth of 2.2 ft (0.67111). content water, very heavy sludge, and black compacted sand. The 011 Pond has an average depth o f 5.1 ft (1.6m). It is generally stratified into layers from top to bottom consisting of grease, high solids content water, very heaV sludge, and black compacted sand. The Oil Pond has an average depth of 5.1 ft (1.6m). It is likewise stratified into layers consisting of surface oil, oily sludge, o i l y water, bottom sludge, and bottom sand. A layer depth profile of the oil pond is shown in Figure 2. It i s generally stratifie 8 into layers from top to bottom consisting of grease, hiqh solids CHOICE OF INCINERATION Analysls of materlal samples from the ponds indicated that the heating value of a l l the organic waste could be estlmated at 2 x 10.10 BTU (2 x 10 10 kJ). The total energy required to bring all the material in the l a oon x 10 10 KJ). This temperature combined with the residence time of the incineration system would ensure a destruction efficiency of 99.9%. An analysis of the pond contents i s shown i n Table I. area t o a temperature in excess o f 1500 deg F (815 dec C) was 5 x 10 10 B 3 u (5 107

Transcript of Use of a Mobile Waste Incineration System for a Site …infohouse.p2ric.org/ref/28/27220.pdf1 1 3 3...

Page 1: Use of a Mobile Waste Incineration System for a Site …infohouse.p2ric.org/ref/28/27220.pdf1 1 3 3 '3 5 James F. Martin ENSCO/Pyro tech Frank1 in, TN ABSTRACT USE OF A MOBILE WASTE

.

1 1 3

3 '3

5

James F. Mar t in ENSCO/Pyro tech Frank1 in , TN

ABSTRACT

USE OF A MOBILE WASTE INCINERATION SYSTEM FOR A SITE CLEAN-UP

Operational plans for a program t o clean up an abandoned waste s i t e by us in mobile i n c i n e r a t i o n equipment are discussed. A descr ip t ion o f a

t r a i l e r mounted and can be se t on a s i t e i n a matter o f days The inc inerat ions system i s unique i n t h a t the energy from the inc ine ra t i on process i s recovered and as used t o d r i ve the system prime mover and exhaust gas clean-up equl pment

mobi iJ e waste i n c i n e r a t i o n system i s presented. It i s preassembled,

NATURE OF SITE

The s i t e t h a t i s t o be cleaned-up consists o f two lagoons i d e n t i f i e d as the Se tage Pond and the O i l Pond. The approximate areas o f the ponds are 1 .! and 0 6 acre ( .61 and .24 hectare) respect ively. L iqu id wastes, cons i s t i ng o f o i l s , greases, and b i l g e tank wastes were pumped i n t o the p i t s over a pe r iod o f years. The s i t e l ayou t i s shown i n Figure 1.

An unused p i t and numerous groundwater monitor ing we l l s are also on s i t e . It had been determined t h a t t he p o t e n t i a i ex i s ted f o r the leakage o f contaminants i n t o the l o c a l ground water supply. However, no hazardous ma te r la l s had been i d e n t i f i e d i n previous sampling studies.

The Septa e Pond has an average depth of 2.2 ft (0.67111).

content water, very heavy sludge, and black compacted sand. The 011 Pond has an average depth o f 5.1 f t (1.6m). It i s general ly s t r a t i f i e d i n t o l aye rs from top t o bottom consis t ing o f grease, h igh s o l i d s content water, very heaV sludge, and black compacted sand. The O i l Pond has an average depth o f 5.1 f t (1.6m). It i s l i k e w i s e s t r a t i f i e d i n t o l aye rs consis t ing o f surface o i l , o i l y sludge, o i l y water, bottom sludge, and bottom sand. A l a y e r depth p r o f i l e o f the o i l pond i s shown i n Figure 2.

I t i s generally s t r a t i f i e 8 i n t o l a y e r s from top t o bottom consis t ing o f grease, h iqh s o l i d s

CHOICE OF INCINERATION

Analysls o f mater la l samples from the ponds ind i ca ted t h a t the heat ing value o f a l l the organic waste could be estlmated a t 2 x 10.10 BTU (2 x 10 10 kJ). The t o t a l energy required t o b r i n g a l l t he mater ia l i n the l a oon

x 10 10 KJ). This temperature combined w i t h the residence t ime o f the i n c i n e r a t i o n system would ensure a dest ruct ion e f f i c i e n c y o f 99.9%. An analys is o f the pond contents i s shown i n Table I.

area t o a temperature i n excess o f 1500 deg F (815 dec C) was 5 x 10 10 B 3 u (5

107

Page 2: Use of a Mobile Waste Incineration System for a Site …infohouse.p2ric.org/ref/28/27220.pdf1 1 3 3 '3 5 James F. Martin ENSCO/Pyro tech Frank1 in, TN ABSTRACT USE OF A MOBILE WASTE

Cost estimates for on-si t e incineration w i t h estimates conventional treatment. A mobile system was competitive w i t h the cost of hau l ing the materials t o a secura 1

On-site incineration appeared t o be an attractive approach t o contamination problem. The material could be rendered inert

n hauling the problem from one location and dumping i t a t

DESCRIPTION OF EQUIPMENT

The Mobile Waste Processing system consists of five integrated. trcailer assembl ies :

(1 1 Sol ids Incineration ( 2 ) L i q u i d s Incineratorlkfterburner ( 3 ) Wasie Heat Boiler ( 4 ) Pol lu t ion Control and Prime Mover ( 5 ) Process Control /Chemical Laboratory

The arrangement o f the equipment i s shown i n Figure 3. diagram is shown i n Figure 4.

A schm&tic f lm

The s o l i d s incineration module consists of a sol ids preparation and charging equ discharge system. The charging system i s compr char i n g hopper w i t h integral ram feeder. Duri

intermittently operated ram feed mechanism loc the material i n t o the k i l n . The rotary k i l n i s a refr carbon steel pipe mounted horizontally on a t ra i ler t runnion drive mechanism. Sol i d s residence t complete mixing and detoxification of the sol incineration i s discharged in to the k i l n end bree ash discharge chute. A water cooled screw con ash t o a storage b i n where i t i s samples for p being sent t o a landfill

soli 9 s are placed on the belt co

The 1 iqu id incinerator/afterburner is a large refract0 sized t o provide a combustion gas residence time of 2 exceeding 2200 degrees F. Waste o i l or other hazardous i n the primary burner t h a t completes the incinerator/a

liquids are burned i n a h i g h temperature environment tha t appraack'es tk abatic flame temperature of the fuel. T h i s burner has the cap

urn h ighly chlorinated material w i t h low BTU value. The prim products mix w i t h the k i l n off gas and additional air i n the a f design of the system allows a range of combinations of k i l n aff waste, and contaminated water t o be destroyed. The variations are governed by the thermal inputs imposed by the various potential waste streams.

\ 1

1 no AVO

Page 3: Use of a Mobile Waste Incineration System for a Site …infohouse.p2ric.org/ref/28/27220.pdf1 1 3 3 '3 5 James F. Martin ENSCO/Pyro tech Frank1 in, TN ABSTRACT USE OF A MOBILE WASTE

n 3

II

A t r a i l e r mounted f i re tube boi ler i s provided to recover heat i n the off gas from the k i l n . The waste heat boi ler provides the steam required fo r the system prime mover. A boi ler feed water treatment package i s included to assure minimal boi ler fouling and subsequent boi ler maintenance. A dear a tor i s rovided for oxygen removal and feed water heating. was& boiler a r e drawn through an Inconel elbow where the hot s t e m is, sprayed w i t h quench recirculation water. The off gases a re cooled t o saturatlon before reaching the e x i t of the quench elbow. A FRP sump box ac ts as a 3mp tank for uency recirculation pumps and provides additional residence time fc r

Off gases from t R e

the gases 1 o cool.

The steam from the boiler i s used t o drive a scrubber/ijector system located on another t r a i l e r . The steam e jec tor scrubber ac ts not only a s the System prime mover, b u t also as a f inal pollution control device. The uenched par t iculate laden gases a re drawn through the e jec tor nozzle. Tie turbulence created by the unique nozzle and mixing tube arrangement causes e f f i c i en t par t iculate capture in to the submicron range. A typical performance curve is shown i n Figure 5. The water, a f t e r removal of agglomerated particulate. i s recycled t o the steam e jec tor scrubber. The sol ids a re collected, i n filters as a sludge, tes ted f o r potential contaminates, and landfil led.

A chemical laboratory i s provided w i t h the system. The laboratory is primarily used t o provide chemical and heating value analysis of the waste material t o be incinerated. taken and analyzed f o r contaminates via the laboratory's gas chromatograph and atomic absorption spectrophotometer. T h i s ve r i f i e s complete detoxification of the waste e f f luent streams pr ior t o land f i l l i n g or other disposal.

A control room is also located i n the laboratory van. The incinerator combusti on process and ancl 1 1 ary processes a re monitored and control 1 ed by an integrated system of analog and digi ta l readouts, single loop controllers, and a computer system. The computer system i s employed i n a multifunction role, providing data acquisit ion and display a s well a s operational process control Single loop control lers a r e uti1 ized t o regulate combustion a i r flow, fuel flow and boiler drum ievel S ingle parameter readouts, mounted on a graphic panel, a r e used t o monitor process temperatures, waste water flow quench water flow, and scrubber water flow. conditioning electronics , therefore, measurement s ignals a r e direct ly wired t o it. These si nal s include thermocouple mill ivol ts, pressure transmitter

analysers. Si nal scaling t o engineering units a s accomplished through dlgital

such a s combustion efflciency and gas flows are a lso generated, &splayed, and logged by the computer.

Samples of the eff luent waste streams are also

The system has a b u i l t - i n signal

mil 1 lamps, an, 3 mil 1 iamp/mill ivol t signals from the four combusti on gas

processing as 8 irected by a portion of the software. Calculated arameters

REMOVAL OF MATERIALS AND EQUIPMENT FEED

The surface o i l i s removed from the O i l Pond by skimner pumps. in to a small storage and blend tank. oi l and the mixture i s fed t o the burner on the rotary k i l n .

I t is pumped Clean fuel o i l i s mixed w i t h the waste

3

-J 109

Page 4: Use of a Mobile Waste Incineration System for a Site …infohouse.p2ric.org/ref/28/27220.pdf1 1 3 3 '3 5 James F. Martin ENSCO/Pyro tech Frank1 in, TN ABSTRACT USE OF A MOBILE WASTE

The o i l y water i s pumped t o another storage tank r e i t i s combined w i t h water from the septage pond. This water i s pumped i n t o the k i l n and i s used t o moderate the k i l n o u t l e t gas temperature. The organic content o f the water i s consumed i n the combustion process as i t passes through the flame zane.

The unpumpable septabe sludge i s removed w i t h a clamshell intermediate storage hopper. The mater ia l i s metered onto conveyor and i s dropped i n t o the ram feeder on the f r o n t face o f the k i l n .

The pumpable sludge from the O i l Pond i s pumped d i r e c t l y t o introduced t o the combustion zone through a steam dr iven l a cav i t y pump i s used t o move the sludge t o the v i c i n i t y o f the k i l n .

The bottom and d ike sand i s removed from the ponds w i t h small ealntk equipment. As t h e pond bottoms are exposed a f i q u i d and 9

sect ions are measured and staked. The contami OR i n t o modular containers f o r t ran rt t o the k i l n f e tw. There i t i s f e d i n t o the k i l n i n the same manner as the sewage sludge.

k i l n . It i s A ppogressive

A f te r the sand i s decontaminated i n t h e r o t a r y k i l n , i t d r ash hopper. hopper. There i t may be he ld f o r t e s t i n g and the r e s u l t i n g o i l - f r e e sand i s returned t o the pond area.

It i s moved by an enclosed screw conveyor t o

The f l ow o f t he various feed streams i s summarized i n Figure 6.

PERFORMANCE OF EQUIPMENT

The design capac i t ies o f the mobile i nc ine ra t i on system are 11. Thewsae are nominal capac i t ies based on avemge heat in mater ia ls a t t h i s s i t e . The actual capac i t ies w i l l vary de content o f the mater ia ls .

Mobile equipment s i m i l a r t o t h i s system has been demonstr approved T r i a l Burn on polychlor inatebiphenol (PCB). Thi dest ruct ion e f f i c i e n c e s i n excess o f 99.9999% as i s requi re substance inc ine ra t i on ru les. Results o f t h i s t e s t i n g

SUWARY

The s ta tus o f the set-up of a mobile i nc ine ra t i on system on a s p e c i f i s i t e has been described, w i l l be reported.

Operation r e s u l t s and perform

1

Page 5: Use of a Mobile Waste Incineration System for a Site …infohouse.p2ric.org/ref/28/27220.pdf1 1 3 3 '3 5 James F. Martin ENSCO/Pyro tech Frank1 in, TN ABSTRACT USE OF A MOBILE WASTE

+ .

FIGURE I .. SITE MAP SHOWING LAYOUT O F DISPOSAL EQUIPMENT

c

J

n n h i n

3 4

1. CONTROL ROOM 81 LABORATORY

2. ROTARY KILN TRAILER 3. AFTERBURNER TRAILER 4. HEAT RECOVERY T R A I L E R 5. QUENCH & SCRUBBER TRAILER

SCALE: I '.I= 100'

Page 6: Use of a Mobile Waste Incineration System for a Site …infohouse.p2ric.org/ref/28/27220.pdf1 1 3 3 '3 5 James F. Martin ENSCO/Pyro tech Frank1 in, TN ABSTRACT USE OF A MOBILE WASTE

..

.

112

n z 0

a

J 0

-

v, w

7

z >- id L

z

E' f ' ti I. . f;

.i

Page 7: Use of a Mobile Waste Incineration System for a Site …infohouse.p2ric.org/ref/28/27220.pdf1 1 3 3 '3 5 James F. Martin ENSCO/Pyro tech Frank1 in, TN ABSTRACT USE OF A MOBILE WASTE

LAYER

TABLE I

ANALYSIS OF CONTENTS OF PONDS

HEATING VALUE

Wax

O i l

Sludge

Sept ic Sludge

16,100 BTU/Lb

19,6000 BTU/Lb

7,7000 BTU/Lb

544 BTU/Lb

' .

CHLORINE CONTENT

C1 2200 ppm

C1 3000 ppm

C1 2000 ppm

C1 8 0 ppm

Page 8: Use of a Mobile Waste Incineration System for a Site …infohouse.p2ric.org/ref/28/27220.pdf1 1 3 3 '3 5 James F. Martin ENSCO/Pyro tech Frank1 in, TN ABSTRACT USE OF A MOBILE WASTE

!

I

I

I

I I

114

Page 9: Use of a Mobile Waste Incineration System for a Site …infohouse.p2ric.org/ref/28/27220.pdf1 1 3 3 '3 5 James F. Martin ENSCO/Pyro tech Frank1 in, TN ABSTRACT USE OF A MOBILE WASTE

FIGURE 4 SCHEMATIC FLOW DIAGRAM OF MWP-2000ER

I - C1 c2 -

TACi

-

EJECTOR SCRUBBER

SECONDARY COMBUSTOR WASTE HEAT

RECIRC. TANK

SLUOCE 4 ss

m CONCENTRATOR

d\ I c4

L L T E R

L2 INflLTRATlON AIR

ROTARY KILN v / L I

i L1 t

CONCENTRATED SALT soLunw

b SAMPLING POINTS FOR TRIAL BURN

Page 10: Use of a Mobile Waste Incineration System for a Site …infohouse.p2ric.org/ref/28/27220.pdf1 1 3 3 '3 5 James F. Martin ENSCO/Pyro tech Frank1 in, TN ABSTRACT USE OF A MOBILE WASTE

0

FIGURE 5

PERFORMANCE OF STEAM JET- EJ ECTOR SCRUBBER

I 1 1 1 I 1 I I I I I I I I I I I .C6 .06 .07 .08 .09 .IO .I2 .I4 .I5 .I6 .20 . .24 0.0001 I

STEAM RATE, I b/l b GAS

-71

It

Page 11: Use of a Mobile Waste Incineration System for a Site …infohouse.p2ric.org/ref/28/27220.pdf1 1 3 3 '3 5 James F. Martin ENSCO/Pyro tech Frank1 in, TN ABSTRACT USE OF A MOBILE WASTE

' .

b OUTSIDE FUEL SUPPLY

?

t -

WASTE GAS OIL

STORAGE STEAM 4

STORAGE (HEATED 1

+ A

FIGURE 6

'I

PROCESS FLOW DIAGRAM

z AQUEOUS ROTARY-

STORAGE KILN

I NC I N E R ATOR b L I Q U I D S

-

. * + WASTE HEAT QUENCH e STEAM SECONDARY

FURNACE

'TjTl- STORAGE

WATER

T R E AT M ENT

WATER

'SOLIDS WITHDRAWAL BY FRONTEND LOADERS

Page 12: Use of a Mobile Waste Incineration System for a Site …infohouse.p2ric.org/ref/28/27220.pdf1 1 3 3 '3 5 James F. Martin ENSCO/Pyro tech Frank1 in, TN ABSTRACT USE OF A MOBILE WASTE

TABLE 11

DESIGN CAPACITIES FOR SYDNEY MLNES

Solids

Sludges

Contaminated Liquid Fuel.

Contaminated Water

3800 1727 300

1000 4 5 4 14,100

120 55 19,600

2500 1136

118

Page 13: Use of a Mobile Waste Incineration System for a Site …infohouse.p2ric.org/ref/28/27220.pdf1 1 3 3 '3 5 James F. Martin ENSCO/Pyro tech Frank1 in, TN ABSTRACT USE OF A MOBILE WASTE

TABLE I11

SUMMARY OF ACTUAL DESTRUCTION TEST PARAMETERS ON PCB TRIAL BURN

Parameter

Waste Feed Rate (Lbs/Min) PCB Conc. in Feed (Lb/Lb) PCB Feed Rate (Lb/Min) Fuel Feed Rate (Lb/Min) Heat Input (BTU/Hr) Oxygen Conc. ( % )

Carbon Monoxide Conc. (ppm) Carbon Dioxide Conc. ( % )

NOxConc . (ppm) Combustion Efficiency ( % )

Residence Time (Sec) Destruction Temp. ( O F )

Excess Oxygen . (%)

HCL Conc. (ppm) HCL, Rwnoved . (%)

Stack Flow Rate (dscfm) PCB Output Rate (Lb/Min) Destruction Efficiency ( % )

Particulate Conc. (Gr/DSCF)

EPA Required Value

Actual Average

8.69 0.416 3.62 5.07 7.3~10 6

36.7 3.8

18.1 6690

99.9 99.9979 2.0 3.48

2132223.2 2274 3 . 12.3

101 99+ 99.63

999 6

99.9999 99.999943 2.06~10

0.08 0.025

119 . . , . . . .

Page 14: Use of a Mobile Waste Incineration System for a Site …infohouse.p2ric.org/ref/28/27220.pdf1 1 3 3 '3 5 James F. Martin ENSCO/Pyro tech Frank1 in, TN ABSTRACT USE OF A MOBILE WASTE

KILN FEED

Stream Sludge

Lbs/Hr 1000 PCT H20 20 PCT Ash 0 PCT Carbon 74 PCT Hydrogen 5.7

PCT Chlorine .3 PCT Sulfur 0 PCT Oxygen 0

WHV BTU/Lb 14131.9

Solids

3800 10 90

0 0 0 0 0 0

0

Air T

Liquid Water

120 250D 15323 0 0

83 13 0 0 0 0

19635

KILN EXIT GAS

Stream Exit Gas Solids

' Lbs/Hr TempOF Lbs/Hr H20 Lbs/Hr Ash' Lbs/Hr C02 Lbs/Hr N2 Lbs/Hr HCL Lbs/Hr 02 Lbs/Hr SO2

19324 1776 3732

0 3096

11784 . 3 707

0

3420 1550

3420

. . . .

Kiln Heat Load MMBTU/Hr 15.48 * Stoichi Gas Density Lbs/Cu. Ft. -015 Gas Velocity Ft/Sec 14.4 Kiln Heat Loss BTU/Hs 1,000,000 Soli

Page 15: Use of a Mobile Waste Incineration System for a Site …infohouse.p2ric.org/ref/28/27220.pdf1 1 3 3 '3 5 James F. Martin ENSCO/Pyro tech Frank1 in, TN ABSTRACT USE OF A MOBILE WASTE

SECONDARY COMBUSTOR EXIT GAS

Stream

Lbs/Hr Temp F Lbs/Hr H20 Lbs'/Hr Ash Lb s / Hr C02 Lbs/Hr N2 Lbs/Hr HCL Lbs/Hr SO2 Lbs/Hr 02

Exit Gas

19523 1589 3732

0 3096 11945

3 0

787

Gas Density Lbs/Cu. Ft. .019 Stoichiometry 1.25 Gec. Heat Loss BTU/Hr 1,000,000 Gas Residence Time Secs. 4.65

Stream

Lbs/Hr Temp F Lbs/Hr H20 Lbs/Hr Ash Lbs/Hr C02 Lbs/Hr N2 Lbs/Hr HCL Lbs/Hr SO2 Lbs/Hr 02

BOILER AND QUENCH

Boiler Exit

16259 423 3732

0 3096 11945

3 0

747

Steam Produced Lbs/Hr 8219 Efficiency pct 70

Quench Exit

16134 . 150

3607 '

0 3096. 11945

3 0

747

Stack

12526 166

0 0

3096 11945

3 0

747

Boiler.Make-up H20 GPM 16.42 Steam to Jet Lbs/Hr 3226

121

Page 16: Use of a Mobile Waste Incineration System for a Site …infohouse.p2ric.org/ref/28/27220.pdf1 1 3 3 '3 5 James F. Martin ENSCO/Pyro tech Frank1 in, TN ABSTRACT USE OF A MOBILE WASTE

i'

--* .

.. .

122