CN203375786U - Recovery system for cold energy of cryogenic liquid - Google Patents

Recovery system for cold energy of cryogenic liquid Download PDF

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Publication number
CN203375786U
CN203375786U CN201320336037.2U CN201320336037U CN203375786U CN 203375786 U CN203375786 U CN 203375786U CN 201320336037 U CN201320336037 U CN 201320336037U CN 203375786 U CN203375786 U CN 203375786U
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CN
China
Prior art keywords
cryogenic liquid
nitrogen
recovery system
pipe
liquid
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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.)
Expired - Fee Related
Application number
CN201320336037.2U
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Chinese (zh)
Inventor
王裕民
梁国刚
王晓毅
张永然
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.)
Angang Steel Co Ltd
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Angang Steel Co Ltd
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Application filed by Angang Steel Co Ltd filed Critical Angang Steel Co Ltd
Priority to CN201320336037.2U priority Critical patent/CN203375786U/en
Application granted granted Critical
Publication of CN203375786U publication Critical patent/CN203375786U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a recovery system for a cold energy of a cryogenic liquid. A cryogenic liquid pipe is connected to a liquid nitrogen outward conveying pipe between a liquid hydrogen outward conveying pump and an evaporator; the other end of the liquid nitrogen pipe is connected to a heat exchange device arranged in an oxygen generation circulation water pool; the outlet end of the heat exchange device is connected to a cryogenic liquid outlet pipe; the other end of the cryogenic liquid outlet pipe is connected to a nitrogen conveying pipeline between the evaporator and an intermediate-pressure nitrogen pipeline. The recovery system for the cold energy of the cryogenic liquid can reduce the temperature of the circulating water efficiently, and enable the constant-temperature compression temperature of the three oxygen production machine sets including an air compressor, a booster and a nitrogen compressor, to be dropped by about 5 DEG C and realizes the design requirement, so that the constant-temperature compression effects of the air compressor is correspondingly improved, the power output of the machine sets is reduced, and the energy consumption of the system is decreased.

Description

Cryogenic liquid cold recovery system
Technical field
The utility model belongs to the pipe-line system field, relates in particular to a kind of pipe-line system of the cold recovery of the liquid nitrogen for cryogenic liquid.
Background technology
Oxygen should reach 10 ℃ with the cooling tower design cooling of empty minute circulating water cooling system, but find in actual production process, the air compressor cooling water outlet temperature is 34 ℃, the air compressor cooling water inlet temperature is 29 ℃, therefore actual cooling-down effect only has 5 ℃ of left and right, because circulating water temperature is higher, have a strong impact on air compressor machine isotherm compression effect, and cause the energy consumption of whole space division system to increase.
Summary of the invention
The utility model aims to provide a kind of by circulation is further lowered the temperature, thereby reduces circulating water temperature, improves air compressor machine isotherm compression effect, reduces the cryogenic liquid cold recovery system of system energy consumption.
For this reason, the solution that the utility model is taked is:
A kind of cryogenic liquid cold recovery system, comprise that liquid nitrogen sends pipeline, nitrogen gas delivery-line and oxygen circulating water pool outside, it is characterized in that, sending pump outside at liquid nitrogen sends outside on pipeline and is connected a cryogenic liquid pipe with the liquid nitrogen between evaporimeter, the cryogenic liquid pipe other end is connected with the heat-exchanger rig in being located at the oxygen circulating water pool by safety valve, the heat-exchanger rig port of export connects the cryogenic liquid outlet, and the cryogenic liquid outlet other end is connected on the nitrogen gas delivery-line between evaporimeter and medium pressure nitrogen feed channel.
Described heat-exchanger rig is heat exchange coil.
On described cryogenic liquid outlet, control valve is installed.
The beneficial effects of the utility model are:
Owing to having set up a cryogenic liquid cold recovery system, effectively reduce the temperature of recirculated water, make the large unit air compressor machine of oxygen three, supercharger and 5 ℃ of left and right of nitrogen compressor isotherm compression temperature decline, reached designing requirement, thereby can corresponding raising air compressor machine isotherm compression effect, every unit per hour can reduce power stage 40kW simultaneously, greatly reduces system energy consumption.
The accompanying drawing explanation
Fig. 1 is cryogenic liquid cold recovery system architecture schematic diagram.
In figure: liquid nitrogen is sent pump 1 outside, liquid nitrogen is sent pipeline 2, evaporimeter 3, nitrogen gas delivery-line 4, medium pressure nitrogen feed channel 5, cryogenic liquid outlet 6, control valve 7, heat exchange coil 8, oxygen circulating water pool 9, safety valve 10, cryogenic liquid pipe 11 outside.
The specific embodiment
As seen from Figure 1, former circulating water cooling system is to send pump 1 outside by the connection liquid nitrogen to send pipeline 2 outside with the liquid nitrogen of evaporimeter 3, and connection evaporimeter 3 forms with the nitrogen gas delivery-line 4 of medium pressure nitrogen feed channel 5.The utility model cryogenic liquid cold recovery system is at liquid nitrogen, to send outside on pipeline 2 to increase to have connect a cryogenic liquid pipe 11, the other end of cryogenic liquid pipe 11 is connected with the heat exchange coil 8 in being located at oxygen circulating water pool 9, for avoiding the pipe network superpressure, at cryogenic liquid pipe 11, safety valve 10 is installed.The port of export of heat exchange coil 8 connects a cryogenic liquid outlet 6, and the other end of cryogenic liquid outlet 6 is connected on the nitrogen gas delivery-line 4 between evaporimeter 3 and medium pressure nitrogen feed channel 5.Simultaneously, control valve 7 also is installed on cryogenic liquid outlet 6,, control valve 7 is closed during lower than-15 ℃ when temperature, to prevent cryogenic liquid, scurry in gas pipeline the pipeline break accident that causes.

Claims (3)

1. a cryogenic liquid cold recovery system, comprise that liquid nitrogen sends pipeline, nitrogen gas delivery-line and oxygen circulating water pool outside, it is characterized in that, sending pump outside at liquid nitrogen sends outside on pipeline and is connected a cryogenic liquid pipe with the liquid nitrogen between evaporimeter, the cryogenic liquid pipe other end is connected with the heat-exchanger rig in being located at the oxygen circulating water pool by safety valve, the heat-exchanger rig port of export connects the cryogenic liquid outlet, and the cryogenic liquid outlet other end is connected on the nitrogen gas delivery-line between evaporimeter and medium pressure nitrogen feed channel.
2. cryogenic liquid cold recovery system according to claim 1, is characterized in that, described heat-exchanger rig is heat exchange coil.
3. cryogenic liquid cold recovery system according to claim 1, is characterized in that, on described cryogenic liquid outlet, control valve is installed.
CN201320336037.2U 2013-06-10 2013-06-10 Recovery system for cold energy of cryogenic liquid Expired - Fee Related CN203375786U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320336037.2U CN203375786U (en) 2013-06-10 2013-06-10 Recovery system for cold energy of cryogenic liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320336037.2U CN203375786U (en) 2013-06-10 2013-06-10 Recovery system for cold energy of cryogenic liquid

Publications (1)

Publication Number Publication Date
CN203375786U true CN203375786U (en) 2014-01-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320336037.2U Expired - Fee Related CN203375786U (en) 2013-06-10 2013-06-10 Recovery system for cold energy of cryogenic liquid

Country Status (1)

Country Link
CN (1) CN203375786U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104266506A (en) * 2014-09-23 2015-01-07 安徽六国化工股份有限公司 Method for heating liquid nitrogen wash fuel gas in synthetic ammonia production
CN109847811A (en) * 2019-02-26 2019-06-07 重庆平伟实业股份有限公司 Utilize the semiconductor devices cryogenic test equipment of liquid nitrogen gasification process cooling capacity
CN114234556A (en) * 2022-02-24 2022-03-25 杭州制氧机集团股份有限公司 Boosting and vaporizing device for recycling liquid oxygen cold and using method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104266506A (en) * 2014-09-23 2015-01-07 安徽六国化工股份有限公司 Method for heating liquid nitrogen wash fuel gas in synthetic ammonia production
CN109847811A (en) * 2019-02-26 2019-06-07 重庆平伟实业股份有限公司 Utilize the semiconductor devices cryogenic test equipment of liquid nitrogen gasification process cooling capacity
CN114234556A (en) * 2022-02-24 2022-03-25 杭州制氧机集团股份有限公司 Boosting and vaporizing device for recycling liquid oxygen cold and using method thereof
CN114234556B (en) * 2022-02-24 2022-08-16 杭氧集团股份有限公司 Boosting and vaporizing device for recycling liquid oxygen cold and using method thereof

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140101

Termination date: 20190610

CF01 Termination of patent right due to non-payment of annual fee