CN103848760B - Utilize the technique of the gas production urea in Steel Complex - Google Patents
Utilize the technique of the gas production urea in Steel Complex Download PDFInfo
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- CN103848760B CN103848760B CN201410056046.5A CN201410056046A CN103848760B CN 103848760 B CN103848760 B CN 103848760B CN 201410056046 A CN201410056046 A CN 201410056046A CN 103848760 B CN103848760 B CN 103848760B
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- gas
- coke
- oven
- urea
- desulfurization
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- Hydrogen, Water And Hydrids (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention is a kind of technique of the gas production urea utilized in Steel Complex, comprise the following steps: after coke-oven gas being entered gas holder, roots blower, wet desulphurization, compression, dry desulfurization, oxygen enrichment conversion system, after the CO proposed with the coal gas of converter pressure-variable adsorption through purifying mixes, after entering conversion, dry desulfurization, low change, decarburization, methanation, compression, synthetic ammonia, and then produce the finished product urea.Present invention process takes full advantage of blast furnace gas or mixed gas carrys out alternative coke-oven gas, thus the outer of coke-oven gas is increased for amount; Utilize the feature that the many hydrogen of coal gas of converter carbon is few, for coke-oven gas mends carbon, become and produce the qualified process gas of synthetic ammonia, production cost is low and working cost is few.Present invention process has saved the energy, reduces energy consumption, decreases the pollution to environment, reasonably make use of the H in coal gas
2and CO, for the coal gas efficiency utilization of Steel Complex have found new outlet, produce again Chemicals urea.
Description
Technical field
The present invention relates to Coal Chemical Industry, ironmaking technology field, specifically a kind of technique of the gas production urea utilized in Steel Complex.
Background technology
China's coke yearly capacity 400000000 tons in 2012, wherein the throughput of 1/3rd is in Steel Complex, and 2/3rds at independently coal chemical enterprise; Steel Complex are while production steel products, and produce a large amount of byproduct coal gas, this is secondary energy important in iron and steel enterprise, account for about 30% of enterprise's total energy consumption.In order to save energy, reduce energy consumption, reduce the pollution to environment, reasonably utilize coal gas to seem particularly important.And the coke-oven gas of Steel Complex is mainly used in steel mill's fuel, due to H in coke-oven gas at present
2content is higher, and H
2combustion heat value not high, only use fuel very unfortunate.
Summary of the invention
The object of the invention is to solve above-mentioned problems of the prior art, and a kind of technique of the gas production urea utilized in Steel Complex is provided.
The present invention is achieved through the following technical solutions:
Utilize a technique for the gas production urea in Steel Complex, comprise the steps:
1) coke-oven gas is transported in gas holder, after roots blower pressurization, enter into wet desulphurization workshop section carry out first desulfurization, coke(oven)gas feeding compressor through first desulfurization compresses, coke-oven gas after compression is sent to dry desulfurization workshop section and carries out secondary desulfuration, after the coke(oven)gas of secondary desulfuration together enters into oxygen enrichment conversion system with empty point, obtain gas A;
2) coal gas of converter is transported in gas holder, after purifying treatment, enters into pressure-variable adsorption separation obtain CO;
3) by the gas A that obtains in step 1) and step 2) in CO mixing after, obtain synthetic ammonia through conversion, the desulfurization of mixed oxidization zinc, low change, decarburization, methanation, purified gas after compressing successively, finally obtain urea by Ammonia Production; Wherein, conversion, the desulfurization of mixed oxidization zinc, low change, decarburization, methanation, purified gas compression etc. are all routine operations well known to those skilled in the art.
Further, step 2) in coal gas of converter poisonous and harmful sulfur impurity after purification, phosphorus, fluorine all≤0.1ppm, arsenic≤5ppb.
Present invention process takes full advantage of blast furnace gas or mixed gas carrys out alternative coke-oven gas, thus the outer of coke-oven gas is increased for amount; Utilize the feature that the many hydrogen of coal gas of converter carbon is few, for coke-oven gas mends carbon, become and produce the qualified process gas of synthetic ammonia, production cost is low and working cost is few.
Present invention process has saved the energy, reduces energy consumption, decreases the pollution to environment, reasonably make use of the H in coal gas
2and CO, for the coal gas efficiency utilization of Steel Complex have found new outlet, produce again Chemicals urea.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of the inventive method.
Specific embodiments
Below in conjunction with accompanying drawing, the invention will be further described:
Utilize a technique for the gas production urea in Steel Complex, comprise the steps:
1) coke-oven gas is transported in gas holder, after roots blower pressurization, enter into wet desulphurization workshop section carry out first desulfurization, coke(oven)gas feeding compressor through first desulfurization compresses, coke-oven gas after compression is sent to dry desulfurization workshop section and carries out secondary desulfuration, after the coke(oven)gas of secondary desulfuration together enters into oxygen enrichment conversion system with empty point, obtain gas A;
2) coal gas of converter is transported in gas holder, make through purifying treatment the poisonous and harmful sulfur impurity in it, phosphorus, fluorine all≤0.1ppm, arsenic≤5ppb, the coal gas of converter after purification enters into pressure-variable adsorption and is separated and obtains CO;
3) by the gas A that obtains in step 1) and step 2) in CO mixing after, obtain synthetic ammonia through conversion, the desulfurization of mixed oxidization zinc, low change, decarburization, methanation, purified gas after compressing successively, finally obtain urea by Ammonia Production.
Claims (2)
1. utilize a technique for the gas production urea in Steel Complex, it is characterized in that, comprise the steps:
1) coke-oven gas is transported in gas holder, after roots blower pressurization, enter into wet desulphurization workshop section carry out first desulfurization, coke(oven)gas feeding compressor through first desulfurization compresses, coke-oven gas after compression is sent to dry desulfurization workshop section and carries out secondary desulfuration, after the coke(oven)gas of secondary desulfuration together enters into oxygen enrichment conversion system with empty point, obtain gas A;
2) coal gas of converter is transported in gas holder, after purifying treatment, enters into pressure-variable adsorption separation obtain CO;
3) by the gas A that obtains in step 1) and step 2) in CO mixing after, obtain synthetic ammonia through conversion, the desulfurization of mixed oxidization zinc, low change, decarburization, methanation, purified gas after compressing successively, finally obtain urea by Ammonia Production.
2. the technique of the gas production urea utilized in Steel Complex according to claim 1, is characterized in that: step 2) in coal gas of converter poisonous and harmful sulfur impurity after purification, phosphorus, fluorine all≤0.1ppm, arsenic≤5ppb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410056046.5A CN103848760B (en) | 2014-02-19 | 2014-02-19 | Utilize the technique of the gas production urea in Steel Complex |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410056046.5A CN103848760B (en) | 2014-02-19 | 2014-02-19 | Utilize the technique of the gas production urea in Steel Complex |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103848760A CN103848760A (en) | 2014-06-11 |
| CN103848760B true CN103848760B (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410056046.5A Expired - Fee Related CN103848760B (en) | 2014-02-19 | 2014-02-19 | Utilize the technique of the gas production urea in Steel Complex |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103848760B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107352558B (en) * | 2017-07-12 | 2019-11-15 | 华陆工程科技有限责任公司 | A kind of device and method of blast furnace gas comprehensive utilization production synthesis ammoniuria element |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4690812A (en) * | 1984-01-19 | 1987-09-01 | Linde Aktiengesellschaft | Integrated production of ammonia and urea |
| CN1474782A (en) * | 2000-11-10 | 2004-02-11 | �����ɷ� | Method for producing ammonia on the basis of a nitrogen-hydrogen mixture from natural gas |
| CN101850988A (en) * | 2010-07-08 | 2010-10-06 | 榆林能源化工投资有限公司 | Ammonia synthesis process |
| CN102659078A (en) * | 2012-05-30 | 2012-09-12 | 平顶山市三源制氢有限公司 | Coke gas pressure-swing adsorption and desulfuration process |
| WO2013095130A1 (en) * | 2011-12-19 | 2013-06-27 | Stamicarbon B.V. Acting Under The Name Of Mt Innovation Center | Process for producing ammonia and urea |
-
2014
- 2014-02-19 CN CN201410056046.5A patent/CN103848760B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4690812A (en) * | 1984-01-19 | 1987-09-01 | Linde Aktiengesellschaft | Integrated production of ammonia and urea |
| CN1474782A (en) * | 2000-11-10 | 2004-02-11 | �����ɷ� | Method for producing ammonia on the basis of a nitrogen-hydrogen mixture from natural gas |
| CN101850988A (en) * | 2010-07-08 | 2010-10-06 | 榆林能源化工投资有限公司 | Ammonia synthesis process |
| WO2013095130A1 (en) * | 2011-12-19 | 2013-06-27 | Stamicarbon B.V. Acting Under The Name Of Mt Innovation Center | Process for producing ammonia and urea |
| CN102659078A (en) * | 2012-05-30 | 2012-09-12 | 平顶山市三源制氢有限公司 | Coke gas pressure-swing adsorption and desulfuration process |
Non-Patent Citations (2)
| Title |
|---|
| 对焦炉煤气的合理利用及前景;蒿云等;《煤炭与化工》;20130831;第36卷(第4期);144-146 * |
| 钢铁企业焦炉煤气的有效利用;邱建宏等;《内蒙古科技与经济》;20110331(第6期);63-64 * |
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| CN103848760A (en) | 2014-06-11 |
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