CN103879975B - A kind of air separation facility normal pressure low latitude nitrogen recycling Application way - Google Patents
A kind of air separation facility normal pressure low latitude nitrogen recycling Application way Download PDFInfo
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- CN103879975B CN103879975B CN201410063503.3A CN201410063503A CN103879975B CN 103879975 B CN103879975 B CN 103879975B CN 201410063503 A CN201410063503 A CN 201410063503A CN 103879975 B CN103879975 B CN 103879975B
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Abstract
The invention provides a kind of air separation facility normal pressure low latitude nitrogen recycling Application way, the method by sending into after low-pressure nitrogen pressure-raising in methanol wash column air lift nitrogen device pipe network used, meets synthetic ammonia installation nitrogen demand by oil free screw compressor.This method not only solves the wasting of resources that low-pressure nitrogen emptying brings, and further ensure that synthetic ammonia installation nitrogen use level is stablized.
Description
Technical field
The present invention relates to a kind of air separation facility normal pressure low latitude nitrogen recycling Application way.
Background technology
In production nitrogenous fertilizer synthetic ammonia process, because sky divides the low-pressure nitrogen that on ice chest, tower produces low due to pressure, only have 10Kpa, can not well be used, general design all causes water-cooling tower emptying.Not only waste nitrogen resource greatly, also give the stable yields of synthetic ammonia installation, carry producing and bring certain restriction.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of air separation facility normal pressure low latitude nitrogen recycling Application way.
Technical scheme of the present invention is as follows:
A kind of air separation facility normal pressure low latitude nitrogen recycling Application way, is characterized in that, comprise the following steps:
(1), sky is divided the low-pressure nitrogen of tower generation on ice chest by compressor pressurizes to 0.7Mpa;
(2), by the nitrogen after pressurization by being decompressed to 0.45Mpa, as synthetic ammonia installation methanol wash column air lift nitrogen gas in independent Cemented filling to methanol wash column air lift nitrogen device pipe network used;
(3), simultaneously by nitrogen pressurization abundant in pipe network used for methanol wash column air lift nitrogen device to 6.0Mpa, enter high pressure nitrogen pipe network, for liquid nitrogen washing provides more washing elevated pressure nitrogen tolerance.
Beneficial effect of the present invention:
Air separation facility normal pressure low latitude of the present invention nitrogen recycling utilizes processing method by low-pressure nitrogen by sending into after oil free screw compressor pressure-raising in methanol wash column air lift nitrogen device pipe network used, meets synthetic ammonia installation nitrogen demand.This method not only solves the wasting of resources that low-pressure nitrogen emptying brings, and further ensure that synthetic ammonia installation nitrogen use level is stablized.
Embodiment
A kind of air separation facility normal pressure low latitude of the present invention nitrogen recycling Application way, is characterized in that, comprise the following steps:
(1), sky is divided the low-pressure nitrogen of tower generation on ice chest by compressor pressurizes to 0.7Mpa;
(2), by the nitrogen after pressurization by being decompressed to 0.45Mpa, as synthetic ammonia installation methanol wash column air lift nitrogen gas in independent Cemented filling to methanol wash column air lift nitrogen device pipe network used;
(3), simultaneously by nitrogen pressurization abundant in pipe network used for methanol wash column air lift nitrogen device to 6.0Mpa, enter high pressure nitrogen pipe network, for liquid nitrogen washing provides more washing elevated pressure nitrogen tolerance.
Claims (1)
1. an air separation facility normal pressure low latitude nitrogen recycling Application way, is characterized in that, comprise the following steps:
(1), sky is divided the low-pressure nitrogen of tower generation on ice chest by compressor pressurizes to 0.7Mpa;
(2), by the nitrogen after pressurization by being decompressed to 0.45Mpa, as synthetic ammonia installation methanol wash column air lift nitrogen gas in independent Cemented filling to methanol wash column air lift nitrogen device pipe network used;
(3), simultaneously by nitrogen pressurization abundant in pipe network used for methanol wash column air lift nitrogen device to 6.0Mpa, enter high pressure nitrogen pipe network, for liquid nitrogen washing provides more washing elevated pressure nitrogen tolerance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063503.3A CN103879975B (en) | 2014-02-25 | 2014-02-25 | A kind of air separation facility normal pressure low latitude nitrogen recycling Application way |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063503.3A CN103879975B (en) | 2014-02-25 | 2014-02-25 | A kind of air separation facility normal pressure low latitude nitrogen recycling Application way |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103879975A CN103879975A (en) | 2014-06-25 |
| CN103879975B true CN103879975B (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410063503.3A Active CN103879975B (en) | 2014-02-25 | 2014-02-25 | A kind of air separation facility normal pressure low latitude nitrogen recycling Application way |
Country Status (1)
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| CN (1) | CN103879975B (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1209175C (en) * | 2002-12-23 | 2005-07-06 | 中国石油天然气股份有限公司乌鲁木齐石化分公司 | Methanol washing process for direct supplied liquidized nitrogen in ammonia synthesis |
| CN103193250B (en) * | 2013-03-21 | 2015-06-17 | 安徽淮化股份有限公司 | Process device of liquid nitrogen washing and methanol washing |
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2014
- 2014-02-25 CN CN201410063503.3A patent/CN103879975B/en active Active
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| CN103879975A (en) | 2014-06-25 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Normal-pressure low altitude nitrogen recycling method for air separation unit Effective date of registration: 20180417 Granted publication date: 20160217 Pledgee: Huizhou merchant bank, Hefei Taihu Road Branch Pledgor: CNSG Anhui Hong Sifang Co., Ltd. Registration number: 2018340000116 |