Introduction of screw compressors

September, 2013

Introduction of screw compressors Screw Machine Engineering Department（SMED）,

SMDERI

Contents

Abstract of SMED

Progress Gas Screw Compressors

Application

Screw Machine Engineering Department（SMED）

Specialized in R&D and manufacture of progress gas screw compressors and screw expanders.

Provide appropriate technology and satisfactory service for customers in petroleum, chemical industry ,etc.

Over 600 sets of screw compressors and screw expanders, widely used in oil field, refinery, chemical industry, metallurgy, electricity industry, etc.

Development Events1982- Set up the “Petrochemical Screw Machinery Development Center, Shanghai ”

1988-Compile the “Petrochemical Screw Compressor Type Spectrum” suitable for the

petrochemical process

1989- 1st flare gas recovery screw compressor, with its diameter 255mm

1996-Pass the accreditation of ISO9001 International Quality Management System

1998- 1st 2-stage Propylene recovery screw compressor

2003- 1st oil-free wet-type H2 recovery screw compressor

2003- 1st nationalization styrene tail gas recovery screw compressor

2009- the “Petrochemical Screw Machinery Development Center, Shanghai ” was reorganized

as Shanghai Qiyao Screw Machinery Co. Ltd. ， listed with the group (SH601989)

2010- 1st coke oven gas screw compressor unit which is used to produce LNG

2011-Pass the accreditation of ISO14001 International Environment Management System

2011- 1st 2-stage butadiene screw compressor (Oxidative dehydrogenation method)

Tot

al A

mou

nt o

f the

Con

trac

t

Total

Amount :

300

million

Product performance of progress gas screw compressor

Production Capacity

Production Capacity： 200 sets per year.

So far, the maximum rotor diameter is 650mm, produced by the screw rotor milling machine, which can meet the rerequirement of maximum gas volumn 800m3/min.

After introducing large-size rotor milling machine produced by the Holroyd, the rotor diameter can add up to 1000mm, with the maximum gas volumn of 1600 m3/min.

Application Area

Application Area Technology/Process

Refinery atmospheric tower over head gas, flare gas,

crude stabilization, PSA device

Chemical Industry styrene、butadiene、epoxy chloropropane、

H2、chloromethane、VCM

Coke Industry coke oven gas、CO pressure boosting device

Sodium Carbonate CO2 pressure boosting device

Others Metallurgy, Electricity industry

Contents

Abstract of SMED


Application

Alternative choices are provided for customers

Vertical Split Horizonally Split

Rotor diameter(mm) 153 178.5 204 255 321 408 510 630 630 816

Max Inlet Flow (m3/h) 180 330 1000 3000 6000 13000 27000 48000 48000 90000

Max Speed(rpm) 3000 3000 5000 5000 5000 5000 5000 4500 4500 3800

Max Outlet P (MPaG) 2.4 2.4 2.4 2.4 2.0 2.0 1.2 0.8 0.6 0.4

Vertical Split Horizonally Split

Rotor diameter(mm) 204 255 321 408 510 630 630 816

Max Inlet Flow (m3/h) 960 3000 6000 13000 27000 48000 48000 90000

Max Speed(rpm) 5000 5000 5000 5000 5000 4500 4500 3800

Max Outlet P (MPaG) 2.4 2.4 2.0 2.0 1.6 0.8 0.6 0.5

Oil-free Liquid-injected Screw Compressor

Oil-free Dry Screw Compressor

Characteristics of our products ?

Reliability High Efficiency

Above 80% adiabatic efficiency3 years continuous operating time

Attractive Cost Effective

Cost Effective

How to do？

Perfect Product

Sophisticated

Manufacturing

Advanced

R&D

Excellent

Quality System

Professional

Design

Efficient

Cost Control

Advanced R&D

Technical innovation and Products R&D is

the core competence.

Over 30 patents.

Auxiliary tools: Solidworks, software of

condition simulation and type design for process

screw compressor(self-created), Ansys, PROII

process simulation, Autopipe analysis for piping

vibration, etc.

Professional Design

The most rational and economical

solution plans rely on:

Over 20 years experience of

process screw compressor design

and manufacturing.

on-site operation and maintenance

experience for over 600 sets of

screw compressor.

High efficiency rotor profiles for process gas.

Timing gears , to prevent rotors collision.

Various seal combine to ensure the reliability.

Reasonable bearing selection to ensure the smooth condition.

Case, runner, inlet and outlet ports, professional design with less energy consumption, targeted to the site.

Characteristic Design

Effective spraying nozzole

the atomization effect can reach to 0.1mm,

to reduce the amount of liquid,

to improve the heat exchange effect

Selection of best head linear velocity

Control the hot clearance strictly

Ensure the compressor efficiency

Characteristic Design

The impedance composite muffler ，

used for dry screw compressor ，can

reduce the aerodynamics noise to

85dB.

Combined carbon-ring and double dry

gas shaft seal can ensure the no

leakage of process gas.

Various seal combination is targeted to

various processes.

Sophisticated Manufacturing进口英国 Holroyd 公司的螺杆转子磨床

（型号Zenth400）

进口英国Holroyd公司的自动螺

旋转子铣床（型号8EX）

So far, the maximum rotor diameter is 650mm, produced by the screw rotor milling machine, which can meet the maximum gas volumn 800m3/min, fit for all the styrene devices below 0.2 million tons/year.

After introduce the Holroyd large-size rotor milling machine, the rotor diameter can be up to 1000mm, with the maximum gas volumn 1600 m3/min.

Effcient Cost ControlFocus on the coorperation

relationship of suppliers.

Suppliers are involved in new

product development to keep

the advantages in quality and

cost, and to provide the optimal

cost control plan for customers.

Excellent Quality SystemAdvanced detecting and testing devices.

Have:

GB/T19001-2008/ISO9001:2008 Quality Management System Certificate

GB/T28001-2001 Occupational Health and Safty Management System Certificate

GB/T24001-2004/ISO14001:2004 Environmental Management System Certificate

Contents

Abstract of SMED


Application

Area Process/Device Gas Component Intake（m3/h） Outlet P（MPaG）

Refinery

Flare gas recovery H2 CO O2 N2 CH4 C2H6 C2H4C3H6 C3H8 H2S

300-7200 0.2-1.1

Over head gas from atmospheric tower

H2 CO O2 N2 CH4 C2H6 C2H4C3H6 C3H8 H2S

600-9000 0.2-1.0

Crude stabilization H2 CO O2 N2 CH4 C2H6 C2H4C3H6 C3H8 H2S

300-1800 0.3-0.8

Chemical Industry

PSA device H2 CO CO2 O2 N2 CH4 1800-15000 0.5-0.8

Styrene tail gas recovery H2 N2 H2O CH4 C6H6C8H10 C8H8

9000-36000 0.16-0.18

Butadiene（DMF method） C4+ 3000-20000 0.6

Butadiene（Oxidative dehydrogenation）

N2 O2 CO CO2 C2H6 C4H6C4H8

7200-45000 1.1

Recycle hydrogen H2 10000-37200 0.22

Butyl rubber device CH3Cl / N2 10000-20000 0.4

VCM C2H3Cl2 HCl 4500-22000 0.75

Coke ChemicalIndustry

Coke oven H2 CO CO2 CH4 H2 S O2 C6H6C10H8 Coal tar 2400-45000 1.1

CO CO 3000-36000 1.0

SodiumCarbonate CO2 CO2 3600-48000 0.8

OthersFuel gas pressurization CH4 H2 600-7200 2.3

Screw Expander

Styrene tail gas screw compressor

SMDERI is the unique

domestic manufacturer to

design and produce the

styrene tail gas screw

compressors.

Styrene tail gas screw compressorIn 2003，in Changzhou Dohow Chemical Co., Ltd. , SMDERI provided the 1st

styrene tail gas screw compressor for the 0.15 million tons/year styrene device.

So far, over 16 sets of screw compressors have been provided for over 13

domestic customers.

High reliability and efficiency, excellent before and after sale service, the

styrene screw compressors produced by SMDERI have gained high prize from

our customers.

2003

2004~2005

2006

2007

2008

2009

2010

2011

2003，Dohow Chemical Co., Ltd. ，0.15million t/year（LG520/0.0276-0.162）

2007， Jiangsu Li Shide Chemical Co., Ltd，0.15 million t/year（LG573/0.0276-0.163）

2009， Qingdao Oil Refining and Petrochemical Co., SINOPEC，0.085 million t/year （LG326/0.026-0.166 ）

2008，Shandong Heze Yuhuang Chemical Co., Ltd.，0.20 million t/year（LG429/0.023-0.162）

Application Sites Device Scalet/year Models Qty. Delivery

DateDohow Chemical Co., Ltd.,

Changzhou 0.15 million LG520/0.0276-0.162 1 2003/12

Hainan Shihua Jiasheng Chemical Co., Ltd. 0.08 million LG252/0.025-0.163 1 2006/01

Jiangsu Li Shide Chemical Co., Ltd 0.15 million LG573/0.0276-0.163 1 2007/09

Shandong Huaxing Petrochemical Group Co., Ltd. , CHEMCHINA 0.08 million LG297/0.0276-0.163 1 2008/01

Daqing Zhonglan Co., Ltd., CHEMCHINA 0.08 million LG297/0.0276-0.163 1 2008/02

Anqing Petro-chemical Co., SINOPEC 0.1 million LG340/0.028-0.163 1 2008/02

Shandong Heze Yuhuang Chemical Co., Ltd. 0.2 million LG429/0.023-0.162 2 2008/04

Achievements of Styrene Screw Compressor

Application Sites Device Scalet/year Models Qty. Delivery

Date

Fushun Petro-chemical Co., CNPC 0.08 million LG236/0.028-0.163 1 2008/08

North Huajin Chemical Industries Group Corporation 0.15 million LG532/0.028-0.163 1 2008/09

Ningbo Keyuan Plastic Co., Ltd. 0.08 million LG293/0.028-0.162 1 2008/09

Qingdao Oil Refining and Petrochemical Co., SINOPEC 0.085 million LG326/0.026-0.166 1 2010/10

Baling Petro-chemical Co., SINOPEC 0.12 million LG456/0.028-0.163 1 2011/01

Yanchang Oil Refining and Petrochemical Co. 0.12 million LG586/0.021-0.166 2 2011/02

North Petrochemical Co., Ltd.,CNOOC 0.12 million LG448/0.028-0.163 1 2014/01

Achievements of Styrene Screw Compressor

Butadiene Screw Compressors

The 1st domestic

butadiene screw

compressor is

designed and

manufactured by

SMDERI.

Butadiene Process

Separation of C4

Fractions

Oxidative Dehydrogenation

Upstream pumping

mechanical seal

Hot clearance

simulation

Best head linear

velocity selection

Separation of C4 fractions to produce butadiene

Control the temperature strictly

High purify ruqiirement of gas

Difficult noise management

Application- Maoming Petrochemical Co., SINOPEC

Self-polymerization of butadiene happens

easily when the temperature is over 80 ℃,

which may adhere to the rotors and cause

damage. To solve this problem, water is

injected into the compressor to control the

temperature of exhaust gas below 75 ℃.

Burning with the air, the component of

generated gas may be changed for inexact

process control. The screw compressors are

not influenced by this, and do not have

surge.

Oxidative dehydrogenation to produce butadiene

Liquid injection is allowed to control the exhaust temperature

Front seal nitrogen packed-in is allowed

Oxidative dehydrogenation to produce butadiene

Flare gas recovery screw compressors

SMDERI is the biggest

domestic manufacturer

of flare gas screw

compressor, with its

market share over 70%.

Flare gas recovery screw compressors

Take the flammable gas recovery

device as an example, whose inlet

volume is 60m3/min per set. The

flammable gas volume is about 23

million m3 . It can increase the

income for about 18.4 million yuan

per year (take the flammable gas as

0.8 yuan/m3).

Coke Oven Gas Screw Compressor

In recent years, the domestic energy supply

situation has changed as the oil and natural gas

price rise substantially. The coal chemical

industry, using coal as raw material, has

grown rapidly.

Coke oven gas is the byproduct of coking process.

In recent years, comprehensive utilization

technologies of coke oven gas have been developed

for Methanol recovery, LNG and H2 producing,

which are suitable for national situations.

Screw compressors are dirt and water proof,

simple structure, long running period, etc.

Therefore, they are getting more and more popular

in coke chemical industry.


Most coke oven gas is from initial coal chemical

industry process gas. This kind of gas is always

low pressure, containing water, dust, tars,

naphthalene, hydrogen sulfide, etc.

The Patent：


（ZL201120374690.9）


The coke oven gas is large flow, big

pressure ratio, highly corrosive, and easily

polymerized. To solve these problems, we

established the project, and developed the

special screw compressor.

Model ApplicationWuhai Huayou Natural Gas Co., Ltd.

Screw compressors used in the coke oven gas purification unit,

whose scale is 0.156 million Nm3/h

1st in the world

(big-scale

hydrogen

production from

coke oven gas

methanation )

Application sites Device Models Qty. Delivery Date

Gansu Yinda Chemincal Co. TDI Purifying LG235/0.8 1 2007

Xinjiang Inner Mongolia PowerCo., Ltd.

Methane production LG430/0.45 2 2011

Wuhai Huayou Natural Gas Co., Ltd. LNG production LG596/0.7 12 2011、2012

Shandong Heze Juxing Chemical Co., Ltd.

Cyclohexanone Unit LG540/0.4 2 2012

Shangdong New Energy Chemical Co., Ltd., CNOOC LNG production LG715/0.5 2 2012

Cabot Chemical(china) Co., Ltd Carbon black production LG41/0.012-0.2 4 2012

Achievements of Coke Oven Gas Screw Compressor

Application sites Device Models Qty. Delivery Date

Neijiang Xinxin New Power Company LNG production LG700/0.5 1 2013

Shandong Chenxi Chemical Co., Ltd. Butyl octanol unit LG700/0.4 LG202/0.35-1.1 1 2013

Tangshan Tangsteel gases Co. Ltd. LNG production LG393/0.45 2 2013

Henan Yutian Chemical Co., Ltd. Hydrogen production LG480/0.6 2 2013

Erdos Chengfeng petrochemical Co., Ltd.

Coal tar hydrogenation

LG770/0.5 LG109/0.5-1.6 2 2013

Henan Liyuan Chemical Co., Ltd. Coal tar hydrogenation LG331/0.8 2 2014

Achievements of Coke Oven Gas Screw Compressor

Screw Expander-Introduction

Intake Expansion Exhaust

Waste�heat�steam

T&P�reduction�steam

Continuous�blowdown

Sintering�waste�heat

Converting�furnace

Steel�rolling�waste�heat

Flush�slag

Low�pressure�steam

Waste�heat�and�

steam


Geothermal

Solar�energy

Biomaterial�and�Biogas

Natural�gas�pressure�energy

Relaxation�gas

Coking�industry

Low�pressure�steam

Waste�heat�steam


Renewable energy

Iron and steel

Petrochemical

Electricity industry

Pharmacy & Food

Building material Paper mills

Screw Expander-Application

A low-grade energy recovery revolution

Screw Expander-Application

Low temperature waste heat recovery

----zero fuel、zero discharge

Restriction device replacement,

pressure energy recovery

----Replace throttles in the natural gas,

refinery and chemical industry processes,

to recover the waste pressure.

Steam Power System

Inlet mass flow t/h

Generator powerkW

LGP255 1~6 50~300

LGP321 5~10 250~500

LGP408 8~20 400~1000

LGP510 15~30 750~1500

Double Circulation Systemfor Low Saturation Temperature Fluid

(Hot Water)

Heat source T,℃

Cold source T,℃

Heat Source Mass flow, t/h

50kW 80 30 100

100kW 90 30 100

200kW 100 30 100

Pressure Power System (Gas Pressure Energy Recovery)

Inlet P, MPa

Outlet P, MPa

Inlet mass flow, t/h

100kW 1.45 0.6 5

2500kW 4.15 0.7 100

The products have 12 patents.

Application cases of screw expander

Natural gas differential pressure energy recovery project, Langson Energy, USA

Volume flow：11000Nm3/hInlet/Outlet P：20.6 bar/7.89 barInlet/Outlet T：60℃/10℃Mass flow rate：8.5t/hGenerator power ：150kW

Waste heat steam recovery power generation project, Jinling petrochemical Co., Sinopec

Inlet condition：0.25-0.3MPa，10~15t/h Model：LGP510/550-2200-1.65-SCOutlet condition：0.02-0.05MPa Profit： 2.8~4.4 million kW·h, 80~120t water saved per yearGenerator power：350-550kW Payback period：1.5 year

Thanks for your attention!Thanks for your attention!

Introduction of screw compressors

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