CN103031158A - Process for treating tar dust and sulfur foam in synthetic ammonia semi-water gas - Google Patents
Process for treating tar dust and sulfur foam in synthetic ammonia semi-water gas Download PDFInfo
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- CN103031158A CN103031158A CN2012105580199A CN201210558019A CN103031158A CN 103031158 A CN103031158 A CN 103031158A CN 2012105580199 A CN2012105580199 A CN 2012105580199A CN 201210558019 A CN201210558019 A CN 201210558019A CN 103031158 A CN103031158 A CN 103031158A
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Abstract
The invention relates to a process for treating tar dust and sulfur foam in synthetic ammonia semi-water gas and belongs to process methods for gas treatment. In the process, a high-gravity machine and a demister are adopted; and a liquid level electric regulating valve device, a magnetic turnover plate liquid level meter, a pressure gauge and a thermometer are used as auxiliary devices. The method comprises the following steps: connecting the dust-containing semi-water gas to a gas inlet of the high-gravity machine by a pipeline; connecting adsorption liquid to a liquid inlet of the high-gravity machine by a pipeline; arranging a flexible coupling between the high-gravity machine and the demister; enabling the gas subjected to overweight treatment to enter the demist; after gas and liquid separation, obtaining qualified gas and enabling the qualified gas to enter a compressor working section; and enable the liquid to enter a sewage treatment system by pipeline connection. The process can improve purification degree of the gas, is beneficial to stable operation of the subsequent process, reduces corrosion and fulfills the aims of investment saving, small occupied area, convenience for management and operation and complete implementation of automation control.
Description
Technical field
The present invention relates to waste gas and dust disposal technique, particularly a kind of technique of processing the coal-tar middle oil dirt of synthetic ammonia semi-water gas, sulphur foam.
Background technology
At present, use coal as the raw material production semi-water gas for chemical plant and fertilizer plant, and common ammonia synthesis process mainly is gas making+semiwater gas desulphurizing+compressor 1,2,3 workshop sections+desulfuration of shift gas+decarburization+4,5 sections+copper of compressor is washed+6 sections+ammonia synthesis of compressor+product NH3.The component of semi-water gas, with the needed component of synthetic ammonia very large difference is arranged, various gaseous fraction content in the semi-water gas in the composition and temperature height, dustiness what etc., normal operation and consumption to conversion, desulfurization, the operation such as synthetic have impact in various degree.Its shortcoming has: the first, and pollution concentration is high in the coal gas, and contains many pollutents that do not meet the requirements of by primary purification in the unstripped gas, and common refining plant also is difficult to reach removes efficient effectively; Second, the air valve of compressor is a vitals in the ammonia synthesis process, belong to consumable accessory, and contain tar dirt and sulfide in the semi-water gas gas, and often stop up air valve, affect the circulating capacity of gas, strengthen power loss, directly affect the displacement of compressor, power loss and maintainability, thus cause the unplanned parking of compressor; The 3rd, in the ammonia synthesis process take coal as raw material, can contain in the unstripped gas and do not purify clean dust, tar, and sulphur foam often stop up the water wall tube of compressor, make compressor usually be in a short time dead ship condition, follow-up product and production are had a great impact.
Summary of the invention
The object of the present invention is to provide in a kind of ammonia synthesis process take coal as raw material through the hydrogen sulfide in the deep purifying semi-water gas again of the semi-water gas after the primary purification, the treatment process of tar and dust, so that the unstripped gas after purifying can satisfy the production of compressor, reach reduced investment, floor space is little, gaseous mass is stable, is convenient to management and operation, can realize the purpose of automatization control fully.
Formation of the present invention: a kind of technique of processing the coal-tar middle oil dirt of synthetic ammonia semi-water gas, sulphur foam, formed by hypergravity machine and mist eliminator, and be aided with liquid level motor-driven control valve door gear, magnetic flap level gauge, tensimeter and thermometer, it is characterized in that:
Absorption liquid enters rotary packed bed in the hypergravity machine by hypergravity machine fluid inlet valve; Contain the semi-water gas of tar dirt, sulphur foam by the gas phase imported valve, the inlet mouth of being crossed the hypergravity machine top by device for cleaning pipeline enters in the hypergravity machine, passes through the rotary packed bed of high speed rotating from top to bottom; Absorption liquid enters hypergravity machine, is distributed in filler Inner edge place through liquid distributor, and the outer rim to rotor under the effect of hypergravity moves, and this swiftly flowing liquid is at filling surface formation liquid film, drop, brin as thin as a wafer; Gas and liquid are at rotary packed bed inner good mass transfer, the reaction conditions of forming, finish in the case absorption liquid to the udst separation effect of semi-water gas, then, liquid is thrown to outer casing inner wall by rotor, gas is entered in the mist eliminator by the hypergravity machine pneumatic outlet, the semi-water gas that purifies enters compressor assembly by mist eliminator pneumatic outlet valve, and the mist eliminator liquid exit of absorption liquid by the mist eliminator bottom of finishing behind the cleaning action enters Sewage treatment systems.
Compared with the prior art, advantage of the present invention: the first, tar dirt is had removal effect, clearance can reach more than 85%.Device for purifying gas (rotary packed bed and mist eliminator) is set before compressor, not only the operation of compressor brought benefit, and to follow-uply partly take off, smart desulfurization is also helpful, because tar and assorted dirt are very large on desulfurization impact, relate to stifled tower, desulfuration efficiency, the secondary salt composition of desulfurization, the steady running of regeneration system rapidly etc.The second, hydrogen sulfide is had removal effect, in the situation that does not adopt sweetening agent, the decreasing ratio of hydrogen sulfide can reach 60%.But the work-ing life of the reduction extending catalyst of sulfide; Reduction is to the corrosion of hardware and pipeline; Reduce contaminate environment; Improve the quality of products.Three, technique of the present invention is wet processing, adopt the absorption liquid of normal temperature that gas is processed, the semi-water gas temperature is improved, so that the excess Temperature because of semi-water gas, affect the inflate quantity of subsequent handling gas blower and compressor, thereby increase power consumption and maintenance of equipment expense, reduce equipment operating efficiency.Four, main body (rotary packed bed) treatment facility floor space is little, efficient is high, energy consumption is low, easy running, easy-maintaining, safety, reliable, flexibly, convenient operation and management etc.
Description of drawings:Fig. 1 is process flow sheet.
Embodiment:Shown in Fig. 1 (process flow sheet), a kind of technique of processing the coal-tar middle oil dirt of synthetic ammonia semi-water gas, sulphur foam, formed by hypergravity machine and mist eliminator, and be aided with liquid level motor-driven control valve door gear, magnetic flap level gauge, tensimeter and thermometer, it is characterized in that: absorption liquid enters rotary packed bed in the hypergravity machine by hypergravity machine fluid inlet valve; Contain the semi-water gas of tar dirt, sulphur foam by the gas phase imported valve, the inlet mouth of being crossed the hypergravity machine top by device for cleaning pipeline enters in the hypergravity machine, passes through the rotary packed bed of high speed rotating from top to bottom; Absorption liquid enters hypergravity machine, is distributed in filler Inner edge place through liquid distributor, and the outer rim to rotor under the effect of hypergravity moves, and this swiftly flowing liquid is at filling surface formation liquid film, drop, brin as thin as a wafer; Gas and liquid are at rotary packed bed inner good mass transfer, the reaction conditions of forming, finish in the case absorption liquid to the udst separation effect of semi-water gas, then, liquid is thrown to outer casing inner wall by rotor, gas is entered in the mist eliminator by the hypergravity machine pneumatic outlet, the semi-water gas that purifies enters compressor assembly by mist eliminator pneumatic outlet valve, and the mist eliminator liquid exit of absorption liquid by the mist eliminator bottom of finishing behind the cleaning action enters Sewage treatment systems.
Claims (1)
1. technique of processing the coal-tar middle oil dirt of synthetic ammonia semi-water gas, sulphur foam, formed by hypergravity machine and mist eliminator, and be aided with liquid level motor-driven control valve door gear, magnetic flap level gauge, tensimeter and thermometer, it is characterized in that: absorption liquid enters rotary packed bed in the hypergravity machine by hypergravity machine fluid inlet valve; Contain the semi-water gas of tar dirt, sulphur foam by the gas phase imported valve, the inlet mouth of being crossed the hypergravity machine top by device for cleaning pipeline enters in the hypergravity machine, passes through the rotary packed bed of high speed rotating from top to bottom; Absorption liquid enters hypergravity machine, is distributed in filler Inner edge place through liquid distributor, and the outer rim to rotor under the effect of hypergravity moves, and this swiftly flowing liquid is at filling surface formation liquid film, drop, brin as thin as a wafer; Gas and liquid are at rotary packed bed inner good mass transfer, the reaction conditions of forming, finish in the case absorption liquid to the udst separation effect of semi-water gas, then, liquid is thrown to outer casing inner wall by rotor, gas is entered in the mist eliminator by the hypergravity machine pneumatic outlet, the semi-water gas that purifies enters compressor assembly by mist eliminator pneumatic outlet valve, and the mist eliminator liquid exit of absorption liquid by the mist eliminator bottom of finishing behind the cleaning action enters Sewage treatment systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105580199A CN103031158A (en) | 2012-12-20 | 2012-12-20 | Process for treating tar dust and sulfur foam in synthetic ammonia semi-water gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105580199A CN103031158A (en) | 2012-12-20 | 2012-12-20 | Process for treating tar dust and sulfur foam in synthetic ammonia semi-water gas |
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| CN103031158A true CN103031158A (en) | 2013-04-10 |
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| CN2012105580199A Pending CN103031158A (en) | 2012-12-20 | 2012-12-20 | Process for treating tar dust and sulfur foam in synthetic ammonia semi-water gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105561713A (en) * | 2016-03-03 | 2016-05-11 | 中北大学 | Device and process for treating tar dust-containing coal gas in super-gravity method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1608715A (en) * | 2003-10-20 | 2005-04-27 | 中国石油化工股份有限公司 | Method of eliminating impurity from gas phase |
| CN102585922A (en) * | 2012-02-22 | 2012-07-18 | 济南钢铁股份有限公司 | Coke oven gas naphthalene-removing device and method |
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- 2012-12-20 CN CN2012105580199A patent/CN103031158A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1608715A (en) * | 2003-10-20 | 2005-04-27 | 中国石油化工股份有限公司 | Method of eliminating impurity from gas phase |
| CN102585922A (en) * | 2012-02-22 | 2012-07-18 | 济南钢铁股份有限公司 | Coke oven gas naphthalene-removing device and method |
Non-Patent Citations (2)
| Title |
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| 潘朝群 等: "超重力旋转填料床在燃煤尾气处理上的应用", 《环境污染治理技术与设备》, vol. 3, no. 2, 28 February 2002 (2002-02-28) * |
| 陈明功: "锅炉烟道气脱硫除尘超重机的工程应用", 《环境工程》, vol. 25, no. 3, 30 June 2009 (2009-06-30) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105561713A (en) * | 2016-03-03 | 2016-05-11 | 中北大学 | Device and process for treating tar dust-containing coal gas in super-gravity method |
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Application publication date: 20130410 |