CN102031159A - Process for purifying and liquefying coke oven gas - Google Patents
Process for purifying and liquefying coke oven gas Download PDFInfo
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- CN102031159A CN102031159A CN2011100015802A CN201110001580A CN102031159A CN 102031159 A CN102031159 A CN 102031159A CN 2011100015802 A CN2011100015802 A CN 2011100015802A CN 201110001580 A CN201110001580 A CN 201110001580A CN 102031159 A CN102031159 A CN 102031159A
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Abstract
The invention relates to a process for purifying and liquefying coke oven gas. Raw gas produced by a coke oven is primarily purified, compressed, deeply purified and then separated at a low temperature; a condensed methane ingredient is used as a liquefied natural gas (LNG) product; and uncondensable combustible gas is returned to the coke oven to serve as the gas for heating the coke oven. In the process, the uncondensable combustible gas which is liquefied by the coke oven gas is used for heating the coke oven, so that resources are reasonably utilized, and the problem of environmental pollution caused by impurity discharge and desorption gas combustion in the conventional coke oven gas liquefaction technology is solved; and in the process, a methanation step is saved, and investment cost and operation cost are greatly reduced.
Description
Technical field
The present invention relates to coke oven gas purification and liquefaction field.
Background technology
Natural gas liquids (LNG) classical production process is to be purified and liquefaction back production natural gas liquids by the natural gas via of exploiting out naturally in the gas field, domestic needs at present is vigorous, breach is very big, but National Development and Reform Committee sends out and changes the 6th article of the (seven) little regulations of [2007] No. 2155 files of the energy " gas utilization policy ": forbid that with large and medium-sized gas field institute producing natural gas be that raw material is built the LNG project.Therefore become the first-selection of LNG project for the raw material production natural gas liquids with the coke-oven gas.
The processing step that existing coke-oven gas is produced natural gas liquids (LNG) is as shown in Figure 1: the raw gas that is come by coke oven obtains purified gas through after the rough purification, wherein half purified gas returns coke oven as heating fuel, carry out low ternperature separation process behind second half process pre-treatment, compression, deep desulfuration, methanation, the deep purifying, the methane composition that condensation is got off is as natural gas liquids (LNG) product, and the incoagulability inflammable gas removes hydrogen manufacturing workshop section production hydrogen product and stripping gas.
Wherein the rough purification of coal gas comprises following operation: gas-liquid separation, gas primary cool, electrically trapped tar oil, gas blower, desulfurization, deamination, gas final cold, take off the benzene naphthalene;
Pre-treatment workshop section removes tar, naphthalene, benzene, the NH of trace in the coal gas
3With impurity such as HCN, the tar that removes, naphthalene, benzene, NH
3Be blended in HCN impurity and enter sewage purification processing system in the waste water;
The deep desulfuration of coal gas comprises following operation: coal gas hydrolysis, smart desulfurization;
Methanation workshop section is heated to 200～600 ℃ with coal gas, makes most of CO, CO in the coal gas
2Be converted into methane.
The deep purifying of coal gas comprises following operation: decarbonation, dehydration;
Above technology shortcoming is as follows:
1) 45～55% purified gas returns coke oven and burns, and methane composition wherein is wasted;
2) stripping gas that obtains behind the incoagulability inflammable gas process process for making hydrogen that low ternperature separation process is come out discharges nowhere, can only send torch burning, wastes energy;
3) pre-treatment workshop section discharges contains tar, naphthalene, benzene, NH
3Contaminated wastewater environment with impurity such as HCN;
4) in order to improve output, methanation workshop section need be set, improve investment and production cost;
5) methanation of coal gas moves under the condition of high temperature, and low ternperature separation process needs low-temperature condition, so energy consumption is very big.
6) methanation reaction of coal gas requires very harshness to foreign matter content in the coal gas, therefore causes investment and running cost very high.
Summary of the invention
The purpose of this invention is to provide a kind of coke oven gas purification liquefaction process, incoagulability inflammable gas heating coke oven after this technology utilization coke-oven gas liquefaction, realize resource rational utilization, and solved the problem of environmental pollution that impurity discharges and the burning stripping gas causes in the existing coke-oven gas liquefaction technology; The present invention has omitted the methanation operation, greatly reduces investment and running cost.
Coke-oven gas is the by product in the coal destructive distillation coke process, and the purified gas main component is: H
2: 54～59%; CH
4: 24～28%; CO:5～7%; C
nH
m: 2～3%; CO
2: 1～3%; N
2: 3～5%; O
2: 0.3-0.7%.Wherein the heat output of methane accounts for 50% of coke-oven gas, and coke oven production needs about 50% of whole coke-oven gas heat outputs, therefore the liquefaction of the methane composition in the coke-oven gas can be separated obtaining natural gas liquids (LNG) product, the incoagulability inflammable gas after liquefaction separates is sent the coke oven gas that acts as a fuel back to and is used.
The raw gas that the present invention adopts coke oven to produce is produced natural gas liquids (LNG) through following steps, as shown in Figure 2: carry out low ternperature separation process behind the coal gas process rough purification that coke oven produces, compression, the deep purifying, the methane composition that condensation is got off is as natural gas liquids (LNG) product, and the incoagulability inflammable gas returns coke oven as coke oven heating combustion gas.
The rough purification of coke-oven gas may further comprise the steps:
1) gas-liquid separation: the raw gas by coke oven is through behind the gas-liquid separator, and gas enters primary cooler, and the liquid that contains byproducts such as ammoniacal liquor, tar, naphthalene is discharged from;
2) gas primary cool: 75～95 ℃ of coal gas that come by gas-liquid separator are cooled to 5～50 ℃ in primary cooler, and discharge byproducts such as condensation ammoniacal liquor, tar, naphthalene;
3) electrically trapped tar oil: coal gas enters electrical tar precipitator, isolates byproducts such as tar light oil, naphthalene in electrical tar precipitator;
4) take off the benzene naphthalene: coal gas enters debenzolizing tower, deviates from benzene and naphthalene in the coal gas with washing oil, and washing oil recycles after through distillation regeneration, and obtains the crude benzol product;
5) deamination: coal gas enters deamination workshop section, deviates from the ammonia in the coal gas;
6) desulfurization: coal gas enters desulfurization workshop section, and the hydrogen sulfide in the coal gas is dropped to below the 25PPm;
The compression of coke-oven gas may further comprise the steps:
1) coke-oven gas with rough purification is pressurized to 0.2～10MPa, and this process can be finished step by step;
2) coal gas that heats up that will pressurize cools, and this process can be finished step by step according to the pressurization grade.
The deep purifying of coke-oven gas may further comprise the steps:
1) decarbonation: deviate from carbonic acid gas in the coal gas with physical adsorption or chemical absorption process;
2) dehydration: coal gas is cooled to 5～35 ℃ isolates water of condensation, use the dry coal gas of the vitriol oil at last;
The low ternperature separation process of coke-oven gas may further comprise the steps:
1) heat exchange: the non-condensable gases that coke-oven gas and low-temperature separator are come out carries out heat exchange;
2) cooling separates: gas temperature is cooled to-95～-168 ℃ and make methane liquefaction, isolate the LNG product, can adopt high pressure gas decompression heat absorption mode to freeze or adopts refrigerator to freeze;
3) exhaust: the incoagulability inflammable gas that is come out by low ternperature separation process workshop section returns coke oven, can carry out indirect heat exchange with coal gas before the electrical tar precipitator before returning coke oven;
Described coke-oven gas rough purification workshop section can be provided with gas final cold device and coal gas precooling unit, and coal gas enters final cooling tower or precooling tower, and coal gas is cooled to 5～35 ℃, and gets rid of impurity such as naphthalene.
Described coke-oven gas rough purification workshop section can be provided with gas blower, and coal gas is pressurized to 10～50kPa;
Described coke-oven gas deep purifying workshop section can be provided with organic sulphur content and separate device, makes the organosulfur in the coal gas generate hydrogen sulfide;
Described coke-oven gas deep purifying workshop section can be provided with whole desulfurizer, and the hydrogen sulfide in the coal gas is dropped to below the 15PPm;
Described coke-oven gas rough purification afterbody can be provided with adsorptive purifier.
Described coke-oven gas deep purifying afterbody can be provided with adsorptive purifier.
Described adsorptive purifier absorbs tar, naphthalene, benzene, the NH of trace in the coal gas with sorbent material
3With impurity such as HCN.
The saturated back of described sorbent material purges regeneration with the incoagulability inflammable gas that heats, and purges back waste gas and enters the preceding gas line of gas primary cool;
Described sorbent material can adopt many microporous solids materials such as gac;
When described coke oven energy consumption was low, the incoagulability inflammable gas had a small amount of residue, can or produce hydrogen with the residue fuel gas generation, and the stripping gas after the hydrogen manufacturing returns coke oven.
Described coke-oven gas rough purification, obtained using more widely in existing coke-oven plant, according to different factory conditions, the rough purification of coke-oven gas mainly contains following 3 kinds of technical process, wherein gas blower can be arranged on before any operation after the gas primary cool or after the operation, coke-oven gas rough purification technical process is as follows:
1) coke-oven gas → gas-liquid separation → gas primary cool → electrically trapped tar oil → precooling tower → desulfurization → deamination → final cooling tower → take off benzene naphthalene → purified gas;
2) coke-oven gas → gas-liquid separation → gas primary cool → electrically trapped tar oil → deamination → final cooling tower → take off benzene naphthalene → desulfurization → purified gas;
3) coke-oven gas → gas-liquid separation → gas primary cool → electrically trapped tar oil → take off benzene naphthalene → deamination → desulfurization → purified gas compared with prior art the invention has the beneficial effects as follows:
1) coke-oven gas is used appropriately, and the gas that can not liquefy returns coke oven combustion, and rest part is liquefied and is the LNG product, has increased enterprise profit in energy-conservation.
2) do not need methanation before the coke-oven gas liquefaction, therefore less demanding to foreign matter content in the coal gas, reduced investment and running cost significantly.
3) the incoagulability inflammable gas that comes out of low ternperature separation process has obtained utilization as low-temperature receiver, has played energy-conservation effect.
4) natural gas liquids (LNG) output has been improved more than 50%.
Description of drawings
Fig. 1 is a coke oven gas purification liquefaction process schema in the prior art;
Fig. 2 is a coke oven gas purification liquefaction process schema of the present invention.
Embodiment
Be described in detail the embodiment of coke oven gas purification liquefaction process of the present invention below by embodiment.
Embodiment 1
Coke-oven gas obtains 75～95 ℃ of raw gass after gas-liquid separation, enter primary cooler and be cooled to 10～45 ℃, and discharge byproducts such as condensation ammoniacal liquor, tar, naphthalene; First cold back coal gas enters the electric fishing device, isolates byproducts such as tar light oil, naphthalene in the electric fishing device; Coal gas enters debenzolizing tower behind the electric fishing device, deviates from benzene and naphthalene in the coal gas with washing oil, and washing oil recycles after through distillation regeneration; Coal gas enters gas blower after taking off benzene, and gas blower is pressurized to 10～40kPa with coal gas; Coal gas after the gas blower pressurization enters deamination workshop section, with the ammonia in the vitriolated mother liquor absorption coal gas, produces ammonium sulfate; Coal gas enters desulfurization workshop section behind the deamination, and desulfurization workshop section adopts the desulfurization of brown iron oxide suspension liquid method, and the hydrogen sulfide in the coal gas is dropped to below the 25PPm; Coal gas after the desulfurization enters adsorption tower, absorbs tar, naphthalene, benzene, the NH of trace in the coal gas in adsorption tower with acticarbon
3With impurity such as HCN, the saturated back of sorbent material purges regeneration with the incoagulability inflammable gas of heating, purges back waste gas and enters gas line before the primary cooler; The compressed machine of coal gas is pressurized to 0.2～10MPa and enters the organosulfur splitter behind the adsorption tower, and the organosulfur splitter makes the organosulfur in the coal gas generate hydrogen sulfide; Coal gas enters whole desulfurization workshop section behind the organosulfur splitter, and whole desulfurization workshop section adopts the desulfurization of brown iron oxide suspension liquid method, and the hydrogen sulfide in the coal gas is dropped to below the 15PPm; Coal gas through whole desulfurization is cooled to after 5～60 ℃ with the CO in the sodium hydroxide solution absorption coal gas
2, with the moisture in the vitriol oil absorption coal gas, the sodium carbonate solution of generation send tar workshop section then, and the sulfuric acid that has absorbed moisture send deamination workshop section; Remove CO
2, enter low ternperature separation process workshop section after the coal gas of water and the incoagulability inflammable gas heat exchange that low-temperature separator is come out, coal gas is cooled to-95～-168 ℃, make methane liquefaction, isolate the LNG product; Major part is returned coke oven combustion after incoagulability inflammable gas that is come out by low ternperature separation process workshop section and the heat exchange of low-temperature separator inlet coal gas, before returning coke oven with electrical tar precipitator before coal gas carry out indirect heat exchange, small part goes to hydrogen manufacturing workshop section to produce high-purity hydrogen, and the desorption gas that hydrogen manufacturing workshop section comes out returns coke oven.
Embodiment 2
Coke-oven gas obtains 75～95 ℃ of raw gass after gas-liquid separation, enter primary cooler and be cooled to 10～45 ℃, and discharge byproducts such as condensation ammoniacal liquor, tar, naphthalene; First cold back coal gas enters the electric fishing device, isolates byproducts such as tar light oil, naphthalene in the electric fishing device; Coal gas enters debenzolizing tower behind the electric fishing device, deviates from benzene and naphthalene in the coal gas with washing oil, and washing oil recycles after through distillation regeneration; Coal gas enters deamination workshop section after taking off benzene, with the ammonia in the vitriolated mother liquor absorption coal gas, produces ammonium sulfate; Coal gas enters desulfurization workshop section behind the deamination, and desulfurization workshop section adopts the desulfurization of brown iron oxide suspension liquid method, and the hydrogen sulfide in the coal gas is dropped to below the 25PPm; The compressed machine of coal gas is pressurized to 0.2～10MPa and enters whole desulfurization workshop section after the desulfurization, and whole desulfurization workshop section adopts the desulfurization of brown iron oxide suspension liquid method, and the hydrogen sulfide in the coal gas is dropped to below the 15PPm; Coal gas through whole desulfurization is cooled to after 5～60 ℃ with the CO in the sodium hydroxide solution absorption coal gas
2, then with the moisture in the vitriol oil absorption coal gas; Remove CO
2, enter low ternperature separation process workshop section after the coal gas of water and the incoagulability inflammable gas heat exchange that low-temperature separator is come out, coal gas is cooled to-95～-168 ℃, make methane liquefaction, isolate the LNG product; Major part is returned coke oven combustion after incoagulability inflammable gas that is come out by low ternperature separation process workshop section and the heat exchange of low-temperature separator inlet coal gas, before returning coke oven with the electric fishing device before coal gas carry out indirect heat exchange, small part is removed heating boiler.
Embodiment 3
Because coke-oven gas rough purification mode is more, does not enumerate one by one here, it is as follows only to narrate key step.
A kind of coke oven gas purification liquefaction process, its technical process is as follows: the raw gas by coke oven is through rough purification → compressor → deep purifying → low ternperature separation process → LNG product, major part is returned coke oven combustion after the heat exchange of remaining incoagulability inflammable gas and low-temperature separator inlet coal gas, return before the coke oven with rough purification in coal gas carry out indirect heat exchange.Small part is removed generating or system oxygen.
Claims (4)
1. coke oven gas purification liquefaction process, it is characterized in that, carry out low ternperature separation process behind the coal gas process rough purification that coke oven produces, compression, the deep purifying, the methane composition that condensation is got off is as natural gas liquids LNG product, and the incoagulability inflammable gas returns coke oven as coke oven heating combustion gas.
2. a kind of coke oven gas purification liquefaction process according to claim 1 is characterized in that, after the described low-temperature separator incoagulability inflammable gas return before the coke oven with rough purification in coal gas carry out indirect heat exchange.
3. a kind of coke oven gas purification liquefaction process according to claim 1 and 2 is characterized in that described coke-oven gas reaches 0.2～10MPa after overdraft.
4. a kind of coke oven gas purification liquefaction process according to claim 1 and 2 is characterized in that, described coke-oven gas deep purifying comprises following operation: organosulfur decomposer and whole desulfurizer.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229806A (en) * | 2011-05-24 | 2011-11-02 | 金能科技有限责任公司 | Green circular economy technology with coal coking as the main part |
| CN102559285A (en) * | 2012-02-27 | 2012-07-11 | 重庆钢铁(集团)有限责任公司 | Coke oven gas finely-purifying process for multiple combustion engines |
| CN102719289A (en) * | 2012-06-21 | 2012-10-10 | 新地能源工程技术有限公司 | Process for preparing liquefied natural gas (LNG) and hydrogen from coke oven gas |
| CN102732349A (en) * | 2012-07-19 | 2012-10-17 | 中科合成油工程有限公司 | Method for producing liquefied natural gas |
| CN103773524A (en) * | 2012-10-19 | 2014-05-07 | 中冶焦耐工程技术有限公司 | Liquefied natural gas production method |
| CN103923706A (en) * | 2014-04-21 | 2014-07-16 | 北京华泰焦化工程技术有限公司 | Method and system for purifying coke oven gas |
| CN104713867A (en) * | 2015-01-30 | 2015-06-17 | 中国科学院广州能源研究所 | Pretreatment apparatus for biogas online laser Raman spectrometer, and use method thereof |
| CN104726153A (en) * | 2013-12-24 | 2015-06-24 | 四川鸿鹄科技集团有限公司 | Comprehensive utilization treatment method of coke oven gas |
| CN104893766A (en) * | 2015-05-28 | 2015-09-09 | 中冶焦耐工程技术有限公司 | Coal gas combined purification tower |
| CN108179046A (en) * | 2018-01-17 | 2018-06-19 | 四川杰瑞恒日天然气工程有限公司 | A kind of method of coke-stove gas hydrogen making and LNG |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280235A (en) * | 2008-05-21 | 2008-10-08 | 太原理工天成科技股份有限公司 | Method for preparing liquefied natural gas from coke oven gas |
| CN101597527A (en) * | 2009-07-07 | 2009-12-09 | 山西科灵环境工程设计技术有限公司 | A kind of method of utilizing coke(oven)gas to produce synthetic natural gas |
| CN101649232A (en) * | 2009-08-25 | 2010-02-17 | 山东铁雄能源煤化有限公司 | Synthesis process of natural gas employing methanation of coke oven gas |
-
2011
- 2011-01-06 CN CN2011100015802A patent/CN102031159A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280235A (en) * | 2008-05-21 | 2008-10-08 | 太原理工天成科技股份有限公司 | Method for preparing liquefied natural gas from coke oven gas |
| CN101597527A (en) * | 2009-07-07 | 2009-12-09 | 山西科灵环境工程设计技术有限公司 | A kind of method of utilizing coke(oven)gas to produce synthetic natural gas |
| CN101649232A (en) * | 2009-08-25 | 2010-02-17 | 山东铁雄能源煤化有限公司 | Synthesis process of natural gas employing methanation of coke oven gas |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229806A (en) * | 2011-05-24 | 2011-11-02 | 金能科技有限责任公司 | Green circular economy technology with coal coking as the main part |
| CN102229806B (en) * | 2011-05-24 | 2013-03-27 | 金能科技股份有限公司 | Green circular economy technology with coal coking as the main part |
| CN102559285A (en) * | 2012-02-27 | 2012-07-11 | 重庆钢铁(集团)有限责任公司 | Coke oven gas finely-purifying process for multiple combustion engines |
| CN102719289A (en) * | 2012-06-21 | 2012-10-10 | 新地能源工程技术有限公司 | Process for preparing liquefied natural gas (LNG) and hydrogen from coke oven gas |
| CN102719289B (en) * | 2012-06-21 | 2014-05-07 | 新地能源工程技术有限公司 | Process for preparing liquefied natural gas (LNG) and hydrogen from coke oven gas |
| CN102732349A (en) * | 2012-07-19 | 2012-10-17 | 中科合成油工程有限公司 | Method for producing liquefied natural gas |
| CN103773524A (en) * | 2012-10-19 | 2014-05-07 | 中冶焦耐工程技术有限公司 | Liquefied natural gas production method |
| CN104726153A (en) * | 2013-12-24 | 2015-06-24 | 四川鸿鹄科技集团有限公司 | Comprehensive utilization treatment method of coke oven gas |
| CN104726153B (en) * | 2013-12-24 | 2017-09-29 | 四川鸿鹄科技集团有限公司 | The Comprehensive utilization method of oven gas |
| CN103923706A (en) * | 2014-04-21 | 2014-07-16 | 北京华泰焦化工程技术有限公司 | Method and system for purifying coke oven gas |
| CN104713867A (en) * | 2015-01-30 | 2015-06-17 | 中国科学院广州能源研究所 | Pretreatment apparatus for biogas online laser Raman spectrometer, and use method thereof |
| CN104713867B (en) * | 2015-01-30 | 2017-07-11 | 中国科学院广州能源研究所 | A kind of pretreatment unit and its application method for the online Laser Roman spectroscopic analysis of composition instrument of biological flue gas |
| CN104893766A (en) * | 2015-05-28 | 2015-09-09 | 中冶焦耐工程技术有限公司 | Coal gas combined purification tower |
| CN108179046A (en) * | 2018-01-17 | 2018-06-19 | 四川杰瑞恒日天然气工程有限公司 | A kind of method of coke-stove gas hydrogen making and LNG |
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Application publication date: 20110427 |