KR100906563B1 - Method for absorption of hydrogen sulfide from coke oven gas - Google Patents

Method for absorption of hydrogen sulfide from coke oven gas Download PDF

Info

Publication number
KR100906563B1
KR100906563B1 KR1020020083447A KR20020083447A KR100906563B1 KR 100906563 B1 KR100906563 B1 KR 100906563B1 KR 1020020083447 A KR1020020083447 A KR 1020020083447A KR 20020083447 A KR20020083447 A KR 20020083447A KR 100906563 B1 KR100906563 B1 KR 100906563B1
Authority
KR
South Korea
Prior art keywords
coke oven
hydrogen sulfide
oven gas
ammonia
water
Prior art date
Application number
KR1020020083447A
Other languages
Korean (ko)
Other versions
KR20040056862A (en
Inventor
김제영
이성영
김장규
Original Assignee
재단법인 포항산업과학연구원
주식회사 포스코
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 재단법인 포항산업과학연구원, 주식회사 포스코 filed Critical 재단법인 포항산업과학연구원
Priority to KR1020020083447A priority Critical patent/KR100906563B1/en
Publication of KR20040056862A publication Critical patent/KR20040056862A/en
Application granted granted Critical
Publication of KR100906563B1 publication Critical patent/KR100906563B1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1456—Removing acid components
    • B01D53/1468—Removing hydrogen sulfide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1493—Selection of liquid materials for use as absorbents
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B39/00—Cooling or quenching coke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/304—Hydrogen sulfide

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Industrial Gases (AREA)

Abstract

본 발명은 코크스오븐 가스(COG : Coke Oven Gas)중의 황화수소 제거방법에 관한 것으로서, 더욱 상세하게는 종래의 냉각탑에서 순환 냉각수를 대체하여 잉여안수를 사용하거나 일부 잉여안수로 대체하고 가성소다를 첨가하여 사용함으로써 코크스오븐 가스중의 황화수소를 흡수하여 제거시키는 방법에 관한 것이다.The present invention relates to a method for removing hydrogen sulfide in coke oven gas (COG), and more particularly, by replacing circulating cooling water in a conventional cooling tower using surplus ordination, or by adding some surplus ordination, and adding caustic soda. The present invention relates to a method for absorbing and removing hydrogen sulfide in a coke oven gas.

코크스오븐, COG, 연료가스, 황화수소, 냉각탑, 냉각수, 잉여안수, 가성소다Coke oven, COG, fuel gas, hydrogen sulfide, cooling tower, cooling water, surplus water, caustic soda

Description

코크스오븐 가스중의 황화수소 제거방법{Method for absorption of hydrogen sulfide from coke oven gas}Method for absorption of hydrogen sulfide from coke oven gas}

본 발명은 코크스오븐 가스(COG : Coke Oven Gas)중의 황화수소 제거방법에 관한 것으로서, 더욱 상세하게는 종래의 냉각탑에서 순환 냉각수를 대체하여 잉여안수를 사용하거나 일부 잉여안수로 대체하고 가성소다를 첨가하여 사용함으로써 코크스오븐 가스중의 황화수소를 흡수하여 제거시키는 방법에 관한 것이다.The present invention relates to a method for removing hydrogen sulfide in coke oven gas (COG), and more particularly, by replacing circulating cooling water in a conventional cooling tower using surplus ordination, or by adding some surplus ordination, and adding caustic soda. The present invention relates to a method for absorbing and removing hydrogen sulfide in a coke oven gas.

일반적으로, 코크스오븐 가스(COG : Coke Oven Gas)중에는 수소, 메탄, 이산화탄소, 시안화합물, 벤젠과 같은 방향족 유기화합물과 황화수소(H2S)가 함유되어 있으며, 수소와 메탄은 발열량이 높은 물질로서 연료가스로 활용되고 있다.In general, coke oven gas (COG) contains aromatic organic compounds such as hydrogen, methane, carbon dioxide, cyanide, benzene and hydrogen sulfide (H 2 S), and hydrogen and methane are high calorific values. It is used as fuel gas.

그러나, 연료가스로 사용될 때 황화수소가 함유된 상태로 연소되면 이산화황화합물이 생성되어 철강 후처리공정에서 제품의 불량을 발생시키고, 또한 대기로 방출되는 경우 대기오염을 유발시키므로 연료가스로 재사용하기 전에 유해한 물질들을 제거하는 공정이 설치되어 운전되고 있다.However, when used as fuel gas, combustion with hydrogen sulfide contains sulfur dioxide compounds, which cause product defects in the steel aftertreatment process, and also cause air pollution when released into the atmosphere. The process of removing substances is in operation.

현재, 황화수소를 제거하기 위해서 여러 방법이 운용되고 있으며, 대표적으 로 아민류를 흡수액으로 이용하여 흡수제거하는 방법과 카보네이트 용액을 이용하여 흡수제거하는 방법, 그리고 암모니아수를 이용하여 흡수하는 방법 등이 있다. 특히, 암모니아수를 이용하는 방법은 코크스오븐 가스의 처리에 있어서 다량 함유된 암모니아를 물로 흡수시켜 이것을 흡수액으로 이용하는 방법으로서 널리 채택되고 있다.Currently, various methods are used to remove hydrogen sulfide, and there are typical methods of absorbing and removing amines using an absorbent solution, absorbing and removing using a carbonate solution, and absorbing using ammonia water. In particular, the method of using ammonia water is widely adopted as a method of absorbing ammonia contained in a large amount in water in the treatment of coke oven gas and using it as an absorption liquid.

그러나, 황화수소를 제거할 때 이산화탄소도 동시에 흡수되어 흡수액의 흡수능력을 포화시키기 때문에 황화수소의 흡수율을 저하시키는 원인이 되고 있다. 이에 따라, 이산화탄소의 흡수율을 억제하고 황화수소만을 선택적으로 흡수하여 흡수율을 향상시키는 방법이 필요되는데, 이를 위해 아민계 화합물을 흡수액으로 하는 방법이 이용되고 있다.However, when hydrogen sulfide is removed, carbon dioxide is also absorbed at the same time to saturate the absorption capacity of the absorbing liquid, which causes a decrease in the hydrogen sulfide absorption rate. Accordingly, there is a need for a method of suppressing the absorption rate of carbon dioxide and selectively absorbing only hydrogen sulfide to improve the absorption rate. To this end, a method using an amine compound as an absorption liquid has been used.

그러나, 이러한 방법의 적용과는 별도로 코크스오븐 가스에서 황화수소를 제거하지 않고 암모니아와 방향족화합물만을 제거하는 공정이 아직 운전중인 곳이 많이 존재한다.However, apart from the application of this method, there are many places where a process of removing only ammonia and aromatic compounds without removing hydrogen sulfide from coke oven gas is still in operation.

이러한 공정에 대해 설명하면, 코크스오븐에서 발생된 코크스오븐 가스는 우선 냉각기에 통과되어 900℃정도에서 약 40℃정도로 냉각된 후, 전기집진기를 거치면서 함유된 미세한 콜타르 입자가 제거되고, 이후 암모니아 포화기로 들어가게 되며, 암모니아 포화기에는 황산용액이 있어 코크스오븐 가스중에 있는 암모니아 성분이 황산과 반응하여 유안(ammnium sulfate)으로 전환되고 암모니아가 제거된 코크스오븐 가스는 방향족 제거 흡수탑으로 이송되어 흡수유와 접촉함으로써 방향족 성분이 제거되고, 최종적으로 저장탱크로 이송되기 전에 최종 냉각탑에서 순환되는 냉각수에 의해 냉각되게 된다.In describing this process, the coke oven gas generated in the coke oven is first passed through a cooler and cooled to about 40 ° C. from about 900 ° C., and then fine coal tar particles are removed while passing through an electrostatic precipitator, followed by saturation of ammonia. The ammonia saturator contains sulfuric acid solution. The ammonia component in the coke oven gas reacts with sulfuric acid to be converted into ammonium sulfate, and the ammonia-free coke oven gas is transferred to the aromatic removal absorption tower and absorbed oil. By contacting the aromatic components are removed and finally cooled by the cooling water circulated in the final cooling tower before being transferred to the storage tank.

따라서, 이러한 공정에서는 황화수소를 흡수, 제거하는 단위공정이 없으므로 최종 코크스오븐 가스에는 다량의 황화수소가 함유되어 후공정에 악영향을 미치고, 대기오염을 유발시키고 있다.Therefore, since there is no unit process for absorbing and removing hydrogen sulfide in this process, the final coke oven gas contains a large amount of hydrogen sulfide, which adversely affects the post process and causes air pollution.

본 발명은 상기와 같은 제반 문제점을 해결하기 위하여 창안된 것으로서, 황화수소를 제거하는 흡수탑이 없이 암모니아와 방향족화합물만을 제거하는 공정에서 최종적으로 코크스오븐 가스를 냉각하는데 사용되는 냉각탑을 이용하여 황화수소를 효율적으로 흡수, 제거하는 방법을 제공하는데 그 목적이 있다.The present invention was devised to solve the above-mentioned problems. In the process of removing only ammonia and aromatic compounds without an absorption tower for removing hydrogen sulfide, hydrogen sulfide is efficiently used by using a cooling tower used for cooling coke oven gas. Its purpose is to provide a method for absorption and removal.

상기와 같은 목적을 달성하기 위한 본 발명의 일 형태에 따른 코크스오븐 가스중의 황화수소 제거방법은, 암모니아 포화기에서 암모니아를 제거하고, 방향족 제거 흡수탑에서 방향족화합물을 제거한 후, 최종적으로 냉각탑에서 코크스오븐 가스를 냉각시키는 공정에 있어서, 상기 냉각탑에서 순환 냉각수를 전체 대체하여 비순환 잉여안수를 사용함으로써 상기 코크스오븐 가스중의 황화수소를 흡수하여 제거시키는 것을 특징으로 한다.The hydrogen sulfide removal method in the coke oven gas of one embodiment of the present invention for achieving the above object is, after removing ammonia from the ammonia saturator, and removing the aromatic compound from the aromatic removal absorption tower, and finally the coke in the cooling tower In the process of cooling the oven gas, the cooling tower absorbs and removes hydrogen sulfide in the coke oven gas by replacing all the circulating cooling water in the cooling tower and using non-circulating surplus water.

또한, 상기와 같은 목적을 달성하기 위한 본 발명의 다른 형태에 따른 코크스오븐 가스중의 황화수소 제거방법은, 암모니아 포화기에서 암모니아를 제거하고, 방향족 제거 흡수탑에서 방향족화합물을 제거한 후, 최종적으로 냉각탑에서 코크스오븐 가스를 냉각시키는 공정에 있어서, 상기 냉각탑에서 순환 냉각수를 일부 대체 하여 비순환 잉여안수를 사용함으로써 상기 코크스오븐 가스중의 황화수소를 흡수하여 제거시키는 것을 특징으로 하며, 바람직하게, 상기 순환 냉각수를 일부 비순환 잉여안수로 대체하고, 여기에 일정액의 가성소다를 첨가하여 사용할 수도 있다.In addition, the hydrogen sulfide removal method in the coke oven gas according to another aspect of the present invention for achieving the above object, after removing the ammonia in the ammonia saturator, the aromatic compound in the aromatic removal absorption tower, and finally the cooling tower In the process of cooling the coke oven gas in the cooling tower, characterized in that by replacing a portion of the circulating cooling water in the cooling tower to absorb and remove hydrogen sulfide in the coke oven gas, preferably, the circulating cooling water It may be replaced by some non-cyclic surplus ordination, and a certain amount of caustic soda may be added thereto.

이하, 본 발명에 따른 코크스오븐 가스(COG : Coke Oven Gas)중의 황화수소(H2S) 제거방법에 대해 상세히 설명하기로 한다.Hereinafter, a method of removing hydrogen sulfide (H 2 S) in a coke oven gas (COG) according to the present invention will be described in detail.

본 발명에 따르면, 황화수소를 제거하는 흡수탑이 없이 암모니아와 방향족화합물만을 제거하는 공정에서 최종적으로 코크스오븐 가스를 냉각시키는데 사용되는 냉각탑에서 순환 냉각수를 일부 또는 전체 대체하여 잉여안수를 사용함으로써 황화수소를 흡수, 제거하게 되며, 이때 잉여안수는 순환 사용되지 않고 냉각탑을 거친 후 안수처리 폐수공정으로 이송되게 된다.According to the present invention, in the process of removing only ammonia and aromatic compounds without an absorption tower for removing hydrogen sulfide, the hydrogen sulfide is absorbed by replacing surplus ordination by replacing some or all of the circulating cooling water in the cooling tower used to cool the coke oven gas. In this case, surplus ordination is not circulated and passed through a cooling tower to the ordination wastewater process.

한편, 본 발명에 따르면, 냉각탑에서 순환 냉각수를 일부 잉여안수로 대체하고, 이것에 가성소다(NaOH)를 일정액 첨가하여 사용함으로써 황화수소를 흡수, 제거하게 된다.Meanwhile, according to the present invention, hydrogen sulfide is absorbed and removed by replacing the circulating cooling water with some surplus water in the cooling tower, and adding a certain amount of caustic soda (NaOH) to the cooling tower.

이로써, 별도로 황화수소 흡수탑을 건설하지 않아도 황화수소의 배출농도를 저하시킬 수 있게 된다.As a result, it is possible to reduce the exhaust concentration of the hydrogen sulfide without constructing the hydrogen sulfide absorption tower separately.

이하, 본 발명의 실시예를 구체적으로 설명한다.Hereinafter, embodiments of the present invention will be described in detail.

<실시예1>Example 1

황화수소의 함량이 8,000ppm이고, 이산화탄소가 2%, 암모니아가 10,000ppm 함유된 코크스오븐 가스에 대해 냉각탑에서 순환 냉각수를 비순환되는 잉여안수로 대체 사용한 결과, 황화수소의 배출농도가 5,200ppm으로 약 35%가 흡수, 제거됨을 확인할 수 있었다.The coke oven gas containing 8,000 ppm of hydrogen sulfide, 2% carbon dioxide and 10,000 ppm of ammonia was replaced by surplus ordination with circulating cooling water in the cooling tower. It was confirmed that the absorption and removal.

<실시예2>Example 2

전술한 실시예 1과 동일한 조성의 코크스오븐 가스에 대해 순환 냉각수를 20%만 잉여안수로 대체하여 그 양만큼 배출하고 재공급하면서 사용한 결과, 코크스오븐 가스중의 황화수소의 농도는 8,000ppm에서 6,500ppm으로 감소하였으며, 약 19%정도 감소하였다.For the coke oven gas having the same composition as in Example 1, only 20% of the circulating cooling water was replaced with surplus ore and discharged and resupplied, and the concentration of hydrogen sulfide in the coke oven gas was 8,000 ppm to 6,500 ppm. Decreased by about 19%.

<실시예3>Example 3

전술한 실시예 1과 동일한 조성의 코크스오븐 가스에 대해 전술한 실시예 2와 같이 순환 냉각수를 잉여안수로 20% 대체한 후, 여기에 가성소다를 1.6g/ℓ 첨가하여 사용한 결과, 코크스오븐 가스중의 황화수소 농도는 6,000ppm으로 감소하였으며, 약 25% 감소함을 확인하였다.For coke oven gas having the same composition as in Example 1, 20% of the circulating cooling water was replaced with surplus eye water as in Example 2, followed by adding 1.6 g / L of caustic soda to the coke oven gas. Hydrogen sulfide concentration was reduced to 6,000ppm, it was confirmed that about 25% decrease.

이 결과는 냉각탑에서 순환 냉각수를 잉여안수로 일부 대체하는 경우 가성소다를 일정액 첨가하면 더욱 효과적으로 황화수소를 제거할 수 있다는 것을 의미한다.This result means that if the cooling tower is partially replaced with surplus water, caustic soda can be added to remove hydrogen sulfide more effectively.

이상과 같이, 본 발명은 비록 한정된 실시예에 의해 설명되었으나, 본 발명은 이것에 의해 한정되지 않으며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해, 본 발명의 기술사상과 아래에 기재될 특허청구범위의 균등범위 내에서 다양한 수정 및 변형이 가능함은 물론이다.As mentioned above, although this invention was demonstrated by the limited Example, this invention is not limited by this, The person of ordinary skill in the art to which this invention belongs, the technical idea of this invention and the following Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

본 발명에 따르면, 추가 장치없이 코크스오븐 가스로부터 황화수소를 효율적으로 흡수, 제거할 수 있게 되어, 코크스오븐 가스를 연료가스로 사용하여도 이산화황화합물과 같은 유해물질이 발생되지 않아, 철강 후처리공정에서의 제품불량율을 저감시키고, 대기오염을 방지하는 효과가 달성될 수 있다. According to the present invention, it is possible to efficiently absorb and remove hydrogen sulfide from the coke oven gas without additional equipment, and even when the coke oven gas is used as a fuel gas, no harmful substances such as sulfur dioxide compounds are generated. The effect of reducing the rate of product defects and preventing air pollution can be achieved.

Claims (3)

암모니아 포화기에서 암모니아를 제거하고, 방향족 제거 흡수탑에서 방향족화합물을 제거한 후, 최종적으로 냉각탑에서 코크스오븐 가스를 냉각시키는 공정에 있어서,In the process of removing ammonia from the ammonia saturator, removing the aromatic compound from the aromatic removal absorption tower, and finally cooling the coke oven gas in the cooling tower, 상기 냉각탑에서 순환 냉각수를 전체 대체하여 비순환 잉여안수를 사용함으로써 상기 코크스오븐 가스중의 황화수소를 흡수하여 제거시키는 것을 특징으로 하는 코크스오븐 가스중의 황화수소 제거방법.And removing hydrogen sulfide in the coke oven gas by removing the entire circulation cooling water in the cooling tower and using acyclic non-returned eye water to remove hydrogen sulfide in the coke oven gas. 암모니아 포화기에서 암모니아를 제거하고, 방향족 제거 흡수탑에서 방향족화합물을 제거한 후, 최종적으로 냉각탑에서 코크스오븐 가스를 냉각시키는 공정에 있어서,In the process of removing ammonia from the ammonia saturator, removing the aromatic compound from the aromatic removal absorption tower, and finally cooling the coke oven gas in the cooling tower, 상기 냉각탑에서 순환 냉각수를 일부 대체하여 비순환 잉여안수를 사용함으로써 상기 코크스오븐 가스중의 황화수소를 흡수하여 제거시키는 것을 특징으로 하는 코크스오븐 가스중의 황화수소 제거방법.The method of removing hydrogen sulfide in the coke oven gas, characterized in that by absorbing the hydrogen sulfide in the coke oven gas by removing a portion of the circulating cooling water in the cooling tower and using a non-circulating surplus water. 제 2항에 있어서,The method of claim 2, 상기 순환 냉각수를 일부 비순환 잉여안수로 대체하고, 여기에 일정액의 가성소다를 첨가하여 사용함으로써 상기 코크스오븐 가스중의 황화수소를 흡수하여 제거시키는 것을 특징으로 하는 코크스오븐 가스중의 황화수소 제거방법.And removing the hydrogen sulfide in the coke oven gas by replacing the circulating cooling water with some non-cyclic surplus water, and adding and using a certain amount of caustic soda to absorb the hydrogen sulfide in the coke oven gas.
KR1020020083447A 2002-12-24 2002-12-24 Method for absorption of hydrogen sulfide from coke oven gas KR100906563B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020020083447A KR100906563B1 (en) 2002-12-24 2002-12-24 Method for absorption of hydrogen sulfide from coke oven gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020020083447A KR100906563B1 (en) 2002-12-24 2002-12-24 Method for absorption of hydrogen sulfide from coke oven gas

Publications (2)

Publication Number Publication Date
KR20040056862A KR20040056862A (en) 2004-07-01
KR100906563B1 true KR100906563B1 (en) 2009-07-07

Family

ID=37349490

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020020083447A KR100906563B1 (en) 2002-12-24 2002-12-24 Method for absorption of hydrogen sulfide from coke oven gas

Country Status (1)

Country Link
KR (1) KR100906563B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101155929B1 (en) * 2009-12-30 2012-06-20 재단법인 포항산업과학연구원 Scrubbing water composition for removing hydrogen sulfide in coke oven gas and the method thereof
KR20210076240A (en) 2019-12-13 2021-06-24 오메가에너지환경기술 주식회사 Highly selective crude separation method of indole in coal tar wash oil
KR20210076239A (en) 2019-12-13 2021-06-24 오메가에너지환경기술 주식회사 High-selective separation method of indole containing in fraction of coal tar wash oil by o/w/o emulsion
KR20230108738A (en) 2022-01-10 2023-07-19 오메가에너지환경기술 주식회사 High-Purity Purification of Indole, One of the components of Coal Tar Absorption Oil by Methanol Extraction-Distillation-Crystallization

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105238450A (en) * 2015-09-29 2016-01-13 山东钢铁股份有限公司 Purifying method of coke oven gas

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6363787A (en) 1986-09-04 1988-03-22 Nippon Steel Chem Co Ltd Apparatus for recovery of tar from coke oven gas
JPH07278553A (en) * 1994-04-12 1995-10-24 Nippon Steel Corp Removal of naphthalene deposited by cooling of coke oven gas
KR20010057466A (en) * 1999-12-23 2001-07-04 이구택 A method for purification cog using chilling method
KR20020051011A (en) * 2000-12-22 2002-06-28 신현준 Apparatus and method for purifying Coke oven gas

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6363787A (en) 1986-09-04 1988-03-22 Nippon Steel Chem Co Ltd Apparatus for recovery of tar from coke oven gas
JPH07278553A (en) * 1994-04-12 1995-10-24 Nippon Steel Corp Removal of naphthalene deposited by cooling of coke oven gas
KR20010057466A (en) * 1999-12-23 2001-07-04 이구택 A method for purification cog using chilling method
KR20020051011A (en) * 2000-12-22 2002-06-28 신현준 Apparatus and method for purifying Coke oven gas

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101155929B1 (en) * 2009-12-30 2012-06-20 재단법인 포항산업과학연구원 Scrubbing water composition for removing hydrogen sulfide in coke oven gas and the method thereof
KR20210076240A (en) 2019-12-13 2021-06-24 오메가에너지환경기술 주식회사 Highly selective crude separation method of indole in coal tar wash oil
KR20210076239A (en) 2019-12-13 2021-06-24 오메가에너지환경기술 주식회사 High-selective separation method of indole containing in fraction of coal tar wash oil by o/w/o emulsion
KR20230108738A (en) 2022-01-10 2023-07-19 오메가에너지환경기술 주식회사 High-Purity Purification of Indole, One of the components of Coal Tar Absorption Oil by Methanol Extraction-Distillation-Crystallization

Also Published As

Publication number Publication date
KR20040056862A (en) 2004-07-01

Similar Documents

Publication Publication Date Title
KR101839225B1 (en) Method for purification of coke oven gas and device for purification of coke oven gas
KR102114062B1 (en) METHOD FOR REMOVING SOx FROM GAS USING POLYOL COMPLEX SOLUTION
US9884283B2 (en) Method for treating sulphur-containing exhaust gases and device thereof
CN103877943B (en) A kind of activated carbon supported Nanometer Copper desulfurizing agent and its production and use
BRPI0413459B1 (en) method of reducing sulfur dioxide concentration in a treated gas stream
US3864449A (en) Regeneration of alkanolamine absorbing solution in gas sweetening processes
KR100906563B1 (en) Method for absorption of hydrogen sulfide from coke oven gas
CN106586972B (en) Energy-saving and environment-friendly low emission recovery technology of sulfur
CN109126457A (en) A kind of marine internal combustion engine tail gas desulfurization method of denitration
CN103752135B (en) A kind of purification method of carbon black plant tail gas
KR101155929B1 (en) Scrubbing water composition for removing hydrogen sulfide in coke oven gas and the method thereof
USRE29428E (en) Regeneration of alkanolamine absorbing solution in gas sweetening processes
JP2016210855A (en) Method for refining coke-oven gas
CN102451608A (en) Tail gas treatment process applicable to natural gas with high sulfur
CN103521048A (en) Tail gas treatment method
CN105457463A (en) Method and device for deep emission reduction of sulfur-bearing exhaust gas
RU2349544C1 (en) Method of production of sulphuric acid
CN112439303B (en) Acrylonitrile tail gas cooling low-temperature absorption system and absorption method
KR100864426B1 (en) Method of removing H2S from Coke Oven Gas
KR101223846B1 (en) Method for removal of hydrogen sulfide by hydrogen sulfide removing agent
KR100376489B1 (en) How to remove hydrogen sulfide gas from coke oven gas
KR20060071622A (en) Method of increasing selective absorption of hydrogen sulfide from cokes oven gas
CN108212093A (en) A kind of desulfuration adsorbent based on graphene
KR102484968B1 (en) Method and apparatus for treating cokes oven gas
KR102209400B1 (en) Device for purification of coke oven gas and method for purification of coke oven gas

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20130628

Year of fee payment: 5

FPAY Annual fee payment

Payment date: 20140619

Year of fee payment: 6

FPAY Annual fee payment

Payment date: 20150619

Year of fee payment: 7

FPAY Annual fee payment

Payment date: 20160616

Year of fee payment: 8

FPAY Annual fee payment

Payment date: 20170620

Year of fee payment: 9

LAPS Lapse due to unpaid annual fee