CN1807558A - Coke-oven gas desulfurization process - Google Patents
Coke-oven gas desulfurization process Download PDFInfo
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- CN1807558A CN1807558A CN 200610042232 CN200610042232A CN1807558A CN 1807558 A CN1807558 A CN 1807558A CN 200610042232 CN200610042232 CN 200610042232 CN 200610042232 A CN200610042232 A CN 200610042232A CN 1807558 A CN1807558 A CN 1807558A
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- desulfurization
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- coke
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Abstract
This invention provides a technical project of gas desulfurizating process flow. The project is: In order to cool down the produced by coke-oven, transfer it to primary cooler; then transfer it to electrical-catching tar equipment to remove dust; then transfer it to desulfurization section to remove sulfur; divert the desulfurized coke-oven gas into air blower and pressurize; then tranfer to sulfer/ammonium section and subsequent sections. In the desulfurizating process, we use absorption tower, which belongs to desulfurization section, to process coke-oven gas. To desulfurize the coke-oven gas, charge desulfurization liquid transferred through its inpputting pump and smmonia water into absorption tower; then tranfer the desulfurization liquid to regenerative tower trough its discharging pump. The sulfur-containing desulfurizati- on liquid discharged by its discharging pump oxidation regenerates with compressed air delivered in regenerative tower; then tranfer it to absorption tower by its charging pump. The compressed air turns to regenerative trail-gas, which expels from the regenerative tower and interfuses into sulfer/ammonium section trough blower gas-discharging pump. Sulfer pink fluid generated in regenerative tower is tranfered to bufferring trough, and finally tranfered to centrifugal machine through bufferring pump to centrifugal desulfurization.
Description
Affiliated technical field:
What the present invention relates to is the treatment process that coal gas is cleaned, especially a kind of coke-oven gas desulfurization process.
Background technology:
In the prior art, known technology is coke-oven plant's existing processes, in this technology desulfurization workshop section be placed on after the gas blower, before the ammonium sulfate workshop section, this technical process, the gas temperature that comes out from cold, electric fishing just is lower, but after gas blower boosted, temperature improved, the needs of sulfur removal technology can not have been satisfied, so before desulfurization workshop section, increased the coal gas precooling unit.And the coal gas after the desulfurization needed again to improve gas temperature through preheating before entering ammonium sulfate workshop section.Therefore, coal gas will be lowered the temperature before desulfurization workshop section, and heats up again after desulfurization workshop section, gas temperature hockets between just need and heating up in cooling in scavenging process like this, increased water, electric consumption, wasted a large amount of energy, this is the existing in prior technology weak point.
Summary of the invention:
Purpose of the present invention is exactly at the existing in prior technology deficiency, and provide a kind of coke-oven gas desulfurization process technical scheme, this scheme with desulfurization workshop section place after the electrical tar precipitator, before the gas blower, the gas temperature of electrical tar precipitator output is lower like this, be suitable for of the requirement of desulfurization workshop section, saved the preceding refrigerating unit of desulfurization workshop section temperature.Coal gas enters the gas blower pressurization after desulfurization workshop section, temperature of gas is improved, and has just alleviated the thermal load of preheater when entering ammonium sulfate workshop section, can reduce the consumption of the energy greatly, and the variation of this gas temperature degree of passing is also comparatively reasonable.
This programme is realized by following technical measures: coke oven is transported to primary cooler with the coal gas that produces and reduces gas temperature, coal gas after the cooling is defeated by electrical tar precipitator and is removed tar fog impurity, coal gas after the removal of impurity is defeated by desulfurization workshop section and is carried out desulfurization, coal gas after the desulfurization enters the gas blower pressurization, is defeated by ammonium sulfate workshop section and follow-up each workshop section then; What handle coal gas desulfurization in the described desulfurization workshop section is absorption tower in the desulfurization workshop section, this absorption tower adds by cooling off and uncooled mixing doctor solution through water cooler that the doctor solution front pump is sent here, add ammoniacal liquor again, the coal gas that electrical tar precipitator is transported carries out desulfurization, and the doctor solution after the desulfurization flows to regenerator column by the doctor solution overboard pump.The regenerator column of desulfurization workshop section carries out oxidation regeneration to doctor solution overboard pump sulfur-bearing doctor solution of sending here and the pressurized air of sending into, doctor solution after the regeneration is given the absorption tower through the doctor solution front pump again, becoming regeneration tail gas after oxygen in the pressurized air is utilized is discharged by regenerator column, and sneak into gas blower gas inlet pipe road and be defeated by ammonium sulfate workshop section through the gas blower discharge, the sulfur-bearing foam solution that produces because of regeneration in the regenerator column is defeated by dashpot.Sulfur-bearing foam solution in the dashpot of desulfurization workshop section through the centrifugation of buffering pump-fed whizzer, transports through the isolated living sulphur cream pack of whizzer, and isolated liquid enters the ground lower storage reservoir, again through ground lower storage reservoir pump-fed dashpot.
The beneficial effect of this programme can be learnt according to the narration to such scheme, because in this scheme, coke oven is defeated by primary cooler with the raw gas that produces and is reduced gas temperature, coal gas after the cooling is defeated by the electrical tar precipitator dedusting, coal gas after dedusting is defeated by desulfurization workshop section and is carried out desulfurization, coal gas after the desulfurization enters the gas blower pressurization, is defeated by ammonium sulfate workshop section and follow-up each workshop section then.What handle coal gas desulfurization in the desulfurization workshop section is the absorption tower, and this absorption tower adds by the defeated doctor solution that comes of doctor solution front pump, adds ammoniacal liquor again, and coal gas is carried out desulfurization, and the doctor solution that is used for after the desulfurization is defeated by regenerator column by the doctor solution overboard pump.In the regenerator column of desulfurization workshop section, doctor solution overboard pump sulfur-bearing doctor solution of sending here and the pressurized air of sending into are carried out oxidation regeneration, doctor solution after the regeneration is given the absorption tower through the doctor solution front pump again, pressurized air becomes regeneration tail gas and discharges and sneak into gas blower gas inlet pipe road by regenerator column after oxidation, discharge through gas blower and be defeated by ammonium sulfate workshop section.The sulfur-bearing foam solution that produces in the regenerator column is delivered to dashpot.Sulphur foam solution in the dashpot through buffering pump-fed whizzer centrifugal desulfurizing, transports through the isolated living sulphur cream pack of whizzer, and isolated liquid enters the ground lower storage reservoir, again through ground lower storage reservoir pump-fed dashpot.This flow process has been saved the preceding refrigerating unit of desulfurization workshop section, when coal gas enters ammonium sulfate workshop section, has also alleviated the thermal load of preheater, makes the variation of gas temperature degree of passing more reasonable, and has saved the energy.And the regeneration tail gas of discharging in the regenerator column is sneaked into gas blower gas inlet pipe road, has increased the output of coal gas again greatly, and has avoided emptying to atmospheric pollution.In addition, adopt whizzer to come separate sulfur, replace existing sulfur melting kettle to melt sulphur with the whizzer desulfurization, its benefit energy-conservation and environmental protection is also very remarkable.This shows that the present invention compared with prior art has outstanding substantive distinguishing features and obvious improvement, the beneficial effect of its enforcement also is conspicuous.
Description of drawings:
Fig. 1 is the process flow diagram of the specific embodiment of the invention.
Among the figure, 1 is coke oven, and 2 is primary cooler, and 3 is electrical tar precipitator, 4 is the absorption tower, and 5 is gas blower gas inlet pipe road, and 6 is gas blower, and 7 is water cooler, 8 is regeneration tail gas, and 9 is regenerator column, and 10 is ammonium sulfate workshop section, 11 are the buffering pump, and 12 is whizzer, and 13 is the ground lower storage reservoir, 14 is ground lower storage reservoir pump, and 15 is dashpot, and 16 is pressurized air, 17 is the doctor solution overboard pump, and 18 is the doctor solution front pump, and 19 is ammoniacal liquor.
Embodiment:
For clearly demonstrating the technical characterstic of this programme,, and, this programme is set forth in conjunction with its accompanying drawing below by an embodiment.
By accompanying drawing as can be seen, the coke-oven gas desulfurization process of this programme, be that coke oven 1 is defeated by primary cooler 2 with the coal gas of high temperature that produces, gas temperature is reduced between the 20-30 degree, coal gas after the cooling is defeated by electrical tar precipitator 3 and is removed impurity such as tar fog, and the coal gas after dedusting is defeated by desulfurization workshop section and is carried out desulfurization, and the coal gas after the desulfurization enters gas blower 6 pressurizations, be warmed up to the 40-60 degree simultaneously, be defeated by ammonium sulfate workshop section 10 and each follow-up workshop section then.What handle coal gas desulfurization in the described desulfurization workshop section is absorption tower 4 in the desulfurization workshop section, this absorption tower 4 add by doctor solution front pump 18 defeated come through water cooler 7 coolings with without refrigerative mixing doctor solution, add ammoniacal liquor 19 again, electrical tar precipitator 3 defeated next coal gas are carried out desulfurization.The purpose of cooling doctor solution is to remove doctor solution in regenerative process, absorption and regeneration process time institute liberated heat, and the temperature that reduces doctor solution can make the operation of system more stable.Be used for the doctor solution after the desulfurization is defeated by desulfurization workshop section by doctor solution overboard pump 17 regenerator column 9, the doctor solution that contains sulphur that 9 pairs of doctor solution overboard pumps 17 of regenerator column are sent here carries out oxidation regeneration with the pressurized air of sending into 16, and the doctor solution after regeneration is sent back to absorption tower 4 through doctor solution front pump 18 again.The pressurized air 16 of input regenerator column 9 through with sulfur-bearing doctor solution oxidation regeneration after become regeneration tail gas 8 by regenerator column 9 discharges, and sneak into gas blower gas inlet pipe road 5, be defeated by ammonium sulfate workshop section 10 through gas blower 6 discharges, this just makes the coal gas amount of being defeated by ammonium sulfate workshop section 10 increase greatly.The sulphur foam solution that in regenerator column 9, produces because of regeneration, the dashpot 15 of after separating, being defeated by desulfurization workshop section, sulphur foam solution in the dashpot 15, be defeated by whizzer 12 centrifugal desulfurizings through buffering pump 11, transport through whizzer 12 isolated living sulphur cream packs, isolated liquid enters ground lower storage reservoir 13, is defeated by dashpot 15 through ground lower storage reservoir pump 14 again.
Claims (3)
1. coke-oven gas desulfurization process, it is characterized in that: coke oven [1] is transported to primary cooler [2] with the coal gas that produces and reduces gas temperature, coal gas after the cooling is defeated by electrical tar precipitator [3] and is removed tar fog impurity, coal gas after the removal of impurity is defeated by desulfurization workshop section and is carried out desulfurization, coal gas after the desulfurization enters gas blower [6] pressurization, is defeated by ammonium sulfate workshop section [10] and follow-up each workshop section then; What handle coal gas desulfurization in the described desulfurization workshop section is absorption tower [4] in the desulfurization workshop section, this absorption tower [4] adds by cooling off and uncooled mixing doctor solution through water cooler [7] that doctor solution front pump [18] is sent here, add ammoniacal liquor [19] again, the coal gas that electrical tar precipitator [3] is transported carries out desulfurization, and the doctor solution after the desulfurization flows to regenerator column [9] by doctor solution overboard pump [18].
2. coke-oven gas desulfurization process according to claim 1, it is characterized in that: the regenerator column of desulfurization workshop section [9] carries out oxidation regeneration to doctor solution overboard pump [17] sulfur-bearing doctor solution of sending here and the pressurized air of sending into [16], doctor solution after the regeneration is given absorption tower [4] through doctor solution front pump [18] again, becoming regeneration tail gas [8] after oxygen in the pressurized air [16] is utilized is discharged by regenerator column [9], and sneak into gas blower gas inlet pipe road [5] and be defeated by ammonium sulfate workshop section [10] through gas blower [6] discharge, the sulfur-bearing foam solution that produces because of regeneration in the regenerator column [9] is defeated by dashpot [15].
3. coke-oven gas desulfurization process according to claim 1 and 2, it is characterized in that: the sulfur-bearing foam solution in the dashpot of desulfurization workshop section [15], be defeated by whizzer [12] centrifugation through buffering pump [11], transport through the isolated living sulphur cream pack of whizzer [12], isolated liquid enters ground lower storage reservoir [13], is defeated by dashpot [15] through ground lower storage reservoir pump [14] again.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610042232 CN1807558A (en) | 2006-01-26 | 2006-01-26 | Coke-oven gas desulfurization process |
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| CN 200610042232 CN1807558A (en) | 2006-01-26 | 2006-01-26 | Coke-oven gas desulfurization process |
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| CN1807558A true CN1807558A (en) | 2006-07-26 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092688A (en) * | 2011-02-12 | 2011-06-15 | 李金山 | Technological process for producing acid with sulfur-containing gas |
| CN101333464B (en) * | 2008-08-04 | 2012-03-14 | 马永伟 | Desulphurization process by vacuum ammonia method |
| CN102512920A (en) * | 2011-12-27 | 2012-06-27 | 广东大众农业科技股份有限公司 | Coal-fired boiler tail gas membrane filtration enriched oxygen recycling method and device |
| CN102977932A (en) * | 2012-12-13 | 2013-03-20 | 济南冶金化工设备有限公司 | Coke oven gas desulfurization equipment |
| CN107763436A (en) * | 2017-11-30 | 2018-03-06 | 北京首钢国际工程技术有限公司 | A kind of coking desulfurization regenerator exhaust treatment system pipeline |
| CN107987893A (en) * | 2017-11-30 | 2018-05-04 | 北京首钢国际工程技术有限公司 | A kind of coking desulfurization regenerator exhaust treatment system |
-
2006
- 2006-01-26 CN CN 200610042232 patent/CN1807558A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333464B (en) * | 2008-08-04 | 2012-03-14 | 马永伟 | Desulphurization process by vacuum ammonia method |
| CN102092688A (en) * | 2011-02-12 | 2011-06-15 | 李金山 | Technological process for producing acid with sulfur-containing gas |
| CN102512920A (en) * | 2011-12-27 | 2012-06-27 | 广东大众农业科技股份有限公司 | Coal-fired boiler tail gas membrane filtration enriched oxygen recycling method and device |
| CN102512920B (en) * | 2011-12-27 | 2014-05-07 | 广东大众农业科技股份有限公司 | Coal-fired boiler tail gas membrane filtration enriched oxygen recycling method and device |
| CN102977932A (en) * | 2012-12-13 | 2013-03-20 | 济南冶金化工设备有限公司 | Coke oven gas desulfurization equipment |
| CN107763436A (en) * | 2017-11-30 | 2018-03-06 | 北京首钢国际工程技术有限公司 | A kind of coking desulfurization regenerator exhaust treatment system pipeline |
| CN107987893A (en) * | 2017-11-30 | 2018-05-04 | 北京首钢国际工程技术有限公司 | A kind of coking desulfurization regenerator exhaust treatment system |
| CN107987893B (en) * | 2017-11-30 | 2020-10-30 | 北京首钢国际工程技术有限公司 | Coking desulfurization regenerator tail gas processing system |
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Open date: 20060726 |