CN103696933B - 煤化工用高低压一体式十列对称平衡大型往复压缩机 - Google Patents

煤化工用高低压一体式十列对称平衡大型往复压缩机 Download PDF

Info

Publication number
CN103696933B
CN103696933B CN201310704103.1A CN201310704103A CN103696933B CN 103696933 B CN103696933 B CN 103696933B CN 201310704103 A CN201310704103 A CN 201310704103A CN 103696933 B CN103696933 B CN 103696933B
Authority
CN
China
Prior art keywords
cylinder
grade
bent axle
low voltage
high pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201310704103.1A
Other languages
English (en)
Other versions
CN103696933A (zh
Inventor
吴四建
屈宗长
谌珊玲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAOJI CITY BOLEI CHEMICAL EQUIPMENT Co Ltd
Original Assignee
BAOJI CITY BOLEI CHEMICAL EQUIPMENT Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BAOJI CITY BOLEI CHEMICAL EQUIPMENT Co Ltd filed Critical BAOJI CITY BOLEI CHEMICAL EQUIPMENT Co Ltd
Priority to CN201310704103.1A priority Critical patent/CN103696933B/zh
Publication of CN103696933A publication Critical patent/CN103696933A/zh
Application granted granted Critical
Publication of CN103696933B publication Critical patent/CN103696933B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

一种煤化工用高低压一体式十列对称平衡大型往复压缩机，其十列气缸对称平衡布局成五个对动列，且三个对动列通过低压侧曲轴驱动，两个对动列通过高压侧曲轴驱动；所述低压侧曲轴设置在低压侧机身内，高压侧曲轴设置在高压侧机身内，双输出轴驱动电机设置在低压侧机身和高压侧机身之间同轴驱动高、低压侧曲轴；所述低压侧曲轴和高压侧曲轴上每一对动列两曲拐的错位角为180°，所述低压侧曲轴和高压侧曲轴上同一侧各列之间两曲拐的错位角为72°，使同一侧五个曲拐错位角呈圆周均布。本发明可同时满足甲醇和合成氨高、低压二种工艺流程的要求，既节省了投资，又降低了生产成本。

Description

煤化工用高低压一体式十列对称平衡大型往复压缩机
技术领域
本发明涉及压缩机技术领域，特别涉及一种煤化工用高低压一体式十列对称平衡大型往复压缩机，同时满足甲醇和合成氨二种工艺流程。
背景技术
焦炉气和兰炭尾气制取甲醇、合成氨以及LNG等这些化工产品的设计及生产技术已经十分成熟，在这项技术中使用的关键设备是焦炉气和兰炭气压缩机。焦炉气和兰炭气一般压力在0.03MPa，在压缩机中压力提高到0.8～1.2MPa后，经过净化等工艺，再将压力提高到5.5MPa后制成甲醇，压力提高到15～26MPa后制成合成氨等。
传统制取甲醇和合成氨的生产工艺需要两台高、低压压缩机来完成，低压压缩机将焦炉气经净化压缩到5.5MPa制成甲醇，使用高压压缩机再加压到15～26MPa后制成合成氨，对于处理10万m3/h焦炉气，按照我国目前最大的压缩机处理量，低压压缩机需要4台左右，而高压压缩机也需要4台左右，按照连续生产的要求，需要备用压缩机，如果按照4开1备的工艺流程，即需要10台压缩机。另外，在一个流程使用低压压缩机和高压压缩机，需要分别建立低、高压压缩机厂房，投资大，管理费用高，提高了生产成本。
发明内容
本发明解决的技术问题：设计一种煤化工用高低压一体式十列对称平衡大型往复压缩机，同时满足甲醇和合成氨高、低压二种工艺流程的要求，既节省了投资，又降低了生产成本。
为了实现上述目的，本发明采用如下技术方案：一种煤化工用高低压一体式十列对称平衡大型往复压缩机，包括Ⅰ级气缸A、Ⅰ级气缸B、Ⅰ级气缸C、Ⅱ级气缸A、Ⅱ级气缸B、Ⅲ级气缸、Ⅴ级气缸、Ⅳ级气缸、Ⅵ级气缸、Ⅶ级气缸，及双输出轴驱动电机、低压侧机身、高压侧机身、低压侧曲轴、高压侧曲轴；所述双输出轴驱动电机设置在低压侧机身和高压侧机身之间，低压侧曲轴设置在低压侧机身内，高压侧曲轴设置在高压侧机身内，且低压侧曲轴和高压侧曲轴均由双输出轴驱动电机同轴驱动；所述低压侧曲轴上具有六个曲拐，Ⅰ级气缸A、Ⅰ级气缸B、Ⅰ级气缸C、Ⅱ级气缸A、Ⅱ级气缸B、Ⅲ级气缸的活塞杆分别通过十字头、连杆与所述六个曲拐一一对应连接，且Ⅰ级气缸A与Ⅱ级气缸A为对动列，Ⅰ级气缸B与Ⅱ级气缸B为对动列，Ⅰ级气缸C与Ⅲ级气缸为对动列；所述高压侧曲轴上具有四个曲拐，Ⅴ级气缸、Ⅳ级气缸、Ⅵ级气缸、Ⅶ级气缸的活塞杆分别通过十字头、连杆与所述四个曲拐一一对应连接，且Ⅴ级气缸与Ⅳ级气缸为对动列，Ⅵ级气缸与Ⅶ级气缸为对动列；
所述对动列为对称平衡式布局，且活塞往复运动质量相等；所述低压侧曲轴和高压侧曲轴上每一对动列两曲拐的错位角为180°，所述低压侧曲轴和高压侧曲轴上同一侧各列之间两曲拐的错位角为72°，使同一侧五个曲拐错位角呈圆周均布。
所述Ⅰ级气缸气缸A、Ⅰ级气缸气缸B、Ⅰ级气缸气缸C均设置在低压侧曲轴的同一侧。
相对于现有技术，本发明的优点是：
1、本发明驱动电机置于高、低压侧之间，通过双输出轴同轴驱动低压侧曲轴和高压侧曲轴，缩短了曲轴的长度，提高了曲轴的刚性，改善了曲轴的加工工艺，降低了成本。
2、低压侧三列Ⅰ级气缸位于曲轴的同一侧，共用同一缓冲器，既简化了管道的布局，减少了缓冲器的容积，又减少了气流脉动的影响。
3、十列气缸对称平衡布局成五个对动列，并使同一侧五个曲拐错位角呈圆周均布，实现了活塞受力均匀，惯性力自动平衡，机器运转平稳，运转可靠性高。
4、甲醇、合成氨的工艺流程可以在一个整体压缩机中完成，既可以满足甲醇和合成氨两种工艺流程，也可以单独用于其中一种工艺流程，使用灵活，节省投资，节约运行费用，降低生产成本。
附图说明
图1为本发明结构示意图；
图2为本发明曲拐错位角分布示意图。
具体实施方式
下面结合图1、2对本发明进行进一步的阐述。
一种煤化工用高低压一体式十列对称平衡大型往复压缩机，包括Ⅰ级气缸A1、Ⅰ级气缸B2、Ⅰ级气缸C3、Ⅱ级气缸A4、Ⅱ级气缸B5、Ⅲ级气缸6、Ⅴ级气缸7、Ⅳ级气缸8、Ⅵ级气缸9、Ⅶ级气缸10，及双输出轴驱动电机12、低压侧机身13、高压侧机身14、低压侧曲轴15、高压侧曲轴16；所述双输出轴驱动电机12设置在低压侧机身13和高压侧机身14之间，低压侧曲轴15设置在低压侧机身13内，高压侧曲轴16设置在高压侧机身14内，且低压侧曲轴15和高压侧曲轴16均由双输出轴驱动电机12同轴驱动；所述低压侧曲轴15上具有六个曲拐，Ⅰ级气缸A1、Ⅰ级气缸B2、Ⅰ级气缸C3、Ⅱ级气缸A4、Ⅱ级气缸B5、Ⅲ级气缸6的活塞杆分别通过十字头17、连杆18与所述六个曲拐一一对应连接，且Ⅰ级气缸A1与Ⅱ级气缸A4为对动列，Ⅰ级气缸B2与Ⅱ级气缸B5为对动列，Ⅰ级气缸C3与Ⅲ级气缸6为对动列；所述高压侧曲轴16上具有四个曲拐，Ⅴ级气缸7、Ⅳ级气缸8、Ⅵ级气缸9、Ⅶ级气缸10的活塞杆分别通过十字头17、连杆18与所述四个曲拐一一对应连接，且Ⅴ级气缸7与Ⅳ级气缸8为对动列，Ⅵ级气缸9与Ⅶ级气缸10为对动列；
所述每一对动列均为对称平衡式布局，且活塞往复运动质量相等，使一阶惯性力和二阶惯性力均得到完全的平衡；所述低压侧曲轴15和高压侧曲轴16上每一对动列两曲拐的错位角为180°，所述低压侧曲轴15和高压侧曲轴16上同一侧各列之间两曲拐的错位角为72°，使同一侧五个曲拐错位角呈圆周均布，实现了活塞受力均匀，惯性力自动平衡，机器运转平稳，运转可靠性高。所述Ⅰ级气缸A1、Ⅰ级气缸B2、Ⅰ级气缸C3均设置在低压侧曲轴15的同一侧，共用同一缓冲器，以简化管道的布局，减少进气缓冲器的容积和气流脉动。
本发明单机排气量为400～700m3/min，进气压力为0.03Mpa，排气压力为14～26Mpa，对于处理10万m3/h焦炉气或者兰炭尾气，需要4台即3开1备就能满足需要，节省了前期的投资，也减少了运行费用，降低了生产成本；工作时焦炉气或者兰炭尾气自低压侧Ⅰ级气缸进气，依次经过Ⅰ级气缸、Ⅱ级气缸、Ⅲ级气缸压缩至5.5MPa左右制成甲醇，然后依次经过高压侧Ⅴ级气缸、Ⅳ级气缸、Ⅵ级气缸、Ⅶ级气缸压缩再加压到14～26MPa后制成合成氨。
本发明并不局限于上述实施例，本领域的技术人员可以根据本发明工作原理和上述实施例，做出各种等同的修改、等同的替换，从而构成更多新的实施例，且均应包括在本发明权利要求范围之内。

Claims (2)

1.一种煤化工用高低压一体式十列对称平衡大型往复压缩机，其特征是：
所述大型往复压缩机包括Ⅰ级气缸A(1)、Ⅰ级气缸B(2)、Ⅰ级气缸C(3)、Ⅱ级气缸A(4)、Ⅱ级气缸B(5)、Ⅲ级气缸(6)、Ⅴ级气缸(7)、Ⅳ级气缸(8)、Ⅵ级气缸(9)、Ⅶ级气缸(10)，及双输出轴驱动电机(12)、低压侧机身(13)、高压侧机身(14)、低压侧曲轴(15)、高压侧曲轴(16)；所述双输出轴驱动电机(12)设置在低压侧机身(13)和高压侧机身(14)之间，低压侧曲轴(15)设置在低压侧机身(13)内，高压侧曲轴(16)设置在高压侧机身(14)内，且低压侧曲轴(15)和高压侧曲轴(16)均由双输出轴驱动电机(12)同轴驱动；所述低压侧曲轴(15)上具有六个曲拐，Ⅰ级气缸A(1)、Ⅰ级气缸B(2)、Ⅰ级气缸C(3)、Ⅱ级气缸A(4)、Ⅱ级气缸B(5)、Ⅲ级气缸(6)的活塞杆分别通过十字头(17)、连杆(18)与所述六个曲拐一一对应连接，且Ⅰ级气缸A(1)与Ⅱ级气缸A(4)为对动列，Ⅰ级气缸B(2)与Ⅱ级气缸B(5)为对动列，Ⅰ级气缸C(3)与Ⅲ级气缸(6)为对动列；所述高压侧曲轴(16)上具有四个曲拐，Ⅴ级气缸(7)、Ⅳ级气缸(8)、Ⅵ级气缸(9)、Ⅶ级气缸(10)的活塞杆分别通过十字头(17)、连杆(18)与所述四个曲拐一一对应连接，且Ⅴ级气缸(7)与Ⅳ级气缸(8)为对动列，Ⅵ级气缸(9)与Ⅶ级气缸(10)为对动列；
各所述对动列为对称平衡式布局，且活塞往复运动质量相等；所述低压侧曲轴(15)和高压侧曲轴(16)上每一对动列两曲拐的错位角为180°，所述Ⅰ级气缸A(1)、Ⅰ级气缸B(2)、Ⅰ级气缸C(3)、Ⅳ级气缸(8)、Ⅵ级气缸(9)对应的五个曲拐错位角为72°呈圆周均布；Ⅱ级气缸A(4)、Ⅱ级气缸B(5)、Ⅲ级气缸(6)、Ⅴ级气缸(7)、Ⅶ级气缸(10)对应的五个曲拐错位角为72°呈圆周均布。
2.根据权利要求1所述的煤化工用高低压一体式十列对称平衡大型往复压缩机，其特征是：所述Ⅰ级气缸气缸A(1)、Ⅰ级气缸气缸B(2)、Ⅰ级气缸气缸C(3)均设置在低压侧曲轴(15)的同一侧。
CN201310704103.1A 2013-12-19 2013-12-19 煤化工用高低压一体式十列对称平衡大型往复压缩机 Active CN103696933B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310704103.1A CN103696933B (zh) 2013-12-19 2013-12-19 煤化工用高低压一体式十列对称平衡大型往复压缩机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310704103.1A CN103696933B (zh) 2013-12-19 2013-12-19 煤化工用高低压一体式十列对称平衡大型往复压缩机

Publications (2)

Publication Number Publication Date
CN103696933A CN103696933A (zh) 2014-04-02
CN103696933B true CN103696933B (zh) 2015-10-21

Family

ID=50358574

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310704103.1A Active CN103696933B (zh) 2013-12-19 2013-12-19 煤化工用高低压一体式十列对称平衡大型往复压缩机

Country Status (1)

Country Link
CN (1) CN103696933B (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107575361A (zh) * 2017-09-28 2018-01-12 蚌埠高科能源装备有限公司 一种平衡往复运动惯性力的压缩机活塞
CN109162894A (zh) * 2018-08-07 2019-01-08 中国石油大学(北京) 抗硫压缩机

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB100249A (en) * 1915-04-02 1917-07-26 Ets Delaunay Belleville Sa Improvements in or relating to Diesel Motors.
GB322161A (en) * 1928-07-26 1929-11-26 Viggo Axel Kjaer Improvement in internal combustion engines, especially multicylinder engines
SU1599570A1 (ru) * 1988-02-16 1990-10-15 Предприятие П/Я В-2302 V-образный шестицилиндровый двигатель внутреннего сгорани
CN2363079Y (zh) * 1999-03-02 2000-02-09 韩德良 无油润滑压缩机
EP1387059A1 (de) * 2002-08-03 2004-02-04 Bayerische Motoren Werke Aktiengesellschaft 10-Zylinder-Verbrennungsmotor
CN101180458A (zh) * 2005-01-11 2008-05-14 施里克公司 航空器柴油机
CN101832246A (zh) * 2010-04-21 2010-09-15 宝鸡市博磊化工机械有限公司 八列对称平衡式大型往复压缩机
CN203627133U (zh) * 2013-12-19 2014-06-04 宝鸡市博磊化工机械有限公司 煤化工用高低压一体式十列对称平衡大型往复压缩机

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8047175B2 (en) * 2004-01-14 2011-11-01 Yamaha Hatsudoki Kabushiki Kaisha In-line four cylinder engine for vehicle and vehicle provided with the engine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB100249A (en) * 1915-04-02 1917-07-26 Ets Delaunay Belleville Sa Improvements in or relating to Diesel Motors.
GB322161A (en) * 1928-07-26 1929-11-26 Viggo Axel Kjaer Improvement in internal combustion engines, especially multicylinder engines
SU1599570A1 (ru) * 1988-02-16 1990-10-15 Предприятие П/Я В-2302 V-образный шестицилиндровый двигатель внутреннего сгорани
CN2363079Y (zh) * 1999-03-02 2000-02-09 韩德良 无油润滑压缩机
EP1387059A1 (de) * 2002-08-03 2004-02-04 Bayerische Motoren Werke Aktiengesellschaft 10-Zylinder-Verbrennungsmotor
CN101180458A (zh) * 2005-01-11 2008-05-14 施里克公司 航空器柴油机
CN101832246A (zh) * 2010-04-21 2010-09-15 宝鸡市博磊化工机械有限公司 八列对称平衡式大型往复压缩机
CN203627133U (zh) * 2013-12-19 2014-06-04 宝鸡市博磊化工机械有限公司 煤化工用高低压一体式十列对称平衡大型往复压缩机

Also Published As

Publication number Publication date
CN103696933A (zh) 2014-04-02

Similar Documents

Publication Publication Date Title
CN203627133U (zh) 煤化工用高低压一体式十列对称平衡大型往复压缩机
CN103696933B (zh) 煤化工用高低压一体式十列对称平衡大型往复压缩机
CN103343737A (zh) 直线电机往复活塞式压缩机
CN203627395U (zh) 一种无杆气缸
CN104033352B (zh) 一种天然气加气子站压缩机
CN201588762U (zh) 螺杆压缩和活塞压缩串联式空气压缩机
CN202900599U (zh) 一种隔膜压缩机压缩气缸缸盖
CN203835726U (zh) 两级压缩喷油螺杆主机
CN201190648Y (zh) 一种汽缸呈放射状设置的压缩机
CN203441697U (zh) 一种活塞式全无油空气压缩机
CN201865877U (zh) 一种双缸无油压缩机
CN203412718U (zh) 直线电机往复活塞式压缩机
CN207122391U (zh) 水平对置数控直线活塞式压缩机
CN211448934U (zh) 一种双泵头空压机
CN203978748U (zh) 一种天然气加气子站压缩机
CN104019010A (zh) 臂杆联动活塞高效气体压缩机
CN202117759U (zh) 发动机泵压式增压进气装置
CN102758756B (zh) 双列多级压缩机通用平台
CN102979699B (zh) 一种压缩机结构
CN101526095A (zh) 一种高效节能型气体增压机
CN204003322U (zh) 无油四级空气压缩机
CN206092318U (zh) 一种高效节能空气压缩机
CN204783513U (zh) 一种回转式空气压缩机
CN204738925U (zh) 一种群星对称无油压缩机
CN102979695B (zh) 一种封闭式制冷压缩机

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: High-low pressure integrated ten-row symmetrical balance large-scale reciprocating compressor for coal chemical industry

Effective date of registration: 20161129

Granted publication date: 20151021

Pledgee: Baoji City Jintai District Rural Credit Cooperatives Chencang credit cooperatives

Pledgor: BAOJI CITY BOLEI CHEMICAL EQUIPMENT Co.,Ltd.

Registration number: 2016610000061

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20171121

Granted publication date: 20151021

Pledgee: Baoji City Jintai District Rural Credit Cooperatives Chencang credit cooperatives

Pledgor: BAOJI CITY BOLEI CHEMICAL EQUIPMENT Co.,Ltd.

Registration number: 2016610000061

PC01 Cancellation of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: High-low pressure integrated ten-row symmetrical balance large-scale reciprocating compressor for coal chemical industry

Effective date of registration: 20171129

Granted publication date: 20151021

Pledgee: Baoji City Jintai District Rural Credit Cooperatives Chencang credit cooperatives

Pledgor: BAOJI CITY BOLEI CHEMICAL EQUIPMENT Co.,Ltd.

Registration number: 2017610000158

PE01 Entry into force of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20181114

Granted publication date: 20151021

Pledgee: Baoji City Jintai District Rural Credit Cooperatives Chencang credit cooperatives

Pledgor: BAOJI CITY BOLEI CHEMICAL EQUIPMENT Co.,Ltd.

Registration number: 2017610000158

PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: High-low pressure integrated ten-row symmetrical balance large-scale reciprocating compressor for coal chemical industry

Effective date of registration: 20181115

Granted publication date: 20151021

Pledgee: Baoji City Jintai District Rural Credit Cooperatives Chencang credit cooperatives

Pledgor: BAOJI CITY BOLEI CHEMICAL EQUIPMENT Co.,Ltd.

Registration number: 2018610000186

PC01 Cancellation of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20191114

Granted publication date: 20151021

Pledgee: Baoji City Jintai District Rural Credit Cooperatives Chencang credit cooperatives

Pledgor: BAOJI CITY BOLEI CHEMICAL EQUIPMENT Co.,Ltd.

Registration number: 2018610000186

PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: High-low pressure integrated ten-row symmetrical balance large-scale reciprocating compressor for coal chemical industry

Effective date of registration: 20191118

Granted publication date: 20151021

Pledgee: Rural credit cooperative association of Jintai District, Baoji City

Pledgor: BAOJI CITY BOLEI CHEMICAL EQUIPMENT Co.,Ltd.

Registration number: Y2019610000047

PE01 Entry into force of the registration of the contract for pledge of patent right
PM01 Change of the registration of the contract for pledge of patent right
PM01 Change of the registration of the contract for pledge of patent right

Change date: 20201111

Registration number: Y2019610000047

Pledgee after: Shaanxi Baoji Jintai Rural Commercial Bank Co.,Ltd.

Pledgee before: Rural credit cooperative association of Jintai District, Baoji City

PC01 Cancellation of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20211119

Granted publication date: 20151021

Pledgee: Shaanxi Baoji Jintai Rural Commercial Bank Co.,Ltd.

Pledgor: BAOJI CITY BOLEI CHEMICAL EQUIPMENT Co.,Ltd.

Registration number: Y2019610000047

PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: High and low pressure integrated ten row symmetrical balanced large reciprocating compressor for coal chemical industry

Effective date of registration: 20220408

Granted publication date: 20151021

Pledgee: Shaanxi Baoji Jintai Rural Commercial Bank Co.,Ltd.

Pledgor: BAOJI CITY BOLEI CHEMICAL EQUIPMENT Co.,Ltd.

Registration number: Y2022980004057

PC01 Cancellation of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20231212

Granted publication date: 20151021

Pledgee: Shaanxi Baoji Jintai Rural Commercial Bank Co.,Ltd.

Pledgor: BAOJI CITY BOLEI CHEMICAL EQUIPMENT Co.,Ltd.

Registration number: Y2022980004057