CN111057558A - Application method of hydrogen-rich gas generated after LNG (liquefied Natural gas) process in coke oven heating - Google Patents
Application method of hydrogen-rich gas generated after LNG (liquefied Natural gas) process in coke oven heating Download PDFInfo
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- CN111057558A CN111057558A CN201911406717.5A CN201911406717A CN111057558A CN 111057558 A CN111057558 A CN 111057558A CN 201911406717 A CN201911406717 A CN 201911406717A CN 111057558 A CN111057558 A CN 111057558A
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- 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
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/10—Regulating and controlling the combustion
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- 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
- C10B21/00—Heating of coke ovens with combustible gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
An application method of hydrogen-rich gas generated after an LNG process in coke oven heating comprises the following steps: 1) adding hydrogen-rich gas into the pipeline through the hydrogen-rich gas according to 3-5% of the total amount of the gas, and mixing the hydrogen-rich gas into the main heating gas pipeline to form heating mixed gas; 2) preheating the mixed gas to preheat air; 3) the preheated mixed gas and preheated air enter an updraft combustion chamber for mixed combustion; 4) the residual hot waste gas enters a downdraft combustion chamber through a crossing hole; 5) the hot waste gas in the downdraft combustion chamber enters the downdraft regenerator through a chute and is finally discharged into the atmosphere through a large chimney, so that a closed-loop gas flow circulation process is formed. According to the method for applying the hydrogen-rich gas after the LNG process in the coke oven heating, disclosed by the invention, the hydrogen-rich gas is used in the coke oven heating, so that the current waste situation of the hydrogen-rich gas is reduced, the gas resource is saved, and the problem of serious hidden danger of atmospheric pollution is solved.
Description
Technical Field
The invention relates to the technical field of coking heating, in particular to an application method of hydrogen-rich gas after an LNG (liquefied natural gas) process in coke oven heating.
Background
In the LNG process, coke oven gas is used as a raw material to remove 23-25% of CH4 in LNG to obtain a regenerated gas which is called as hydrogen-rich gas; the large amount of hydrogen-rich gas can not be utilized at the beginning of production, and can only be released into the atmosphere temporarily, thereby causing certain pollution to the atmosphere.
Disclosure of Invention
The invention aims to provide an application method of hydrogen-rich gas after an LNG process in coke oven heating, wherein the hydrogen-rich gas is used in the coke oven heating, so that the current waste situation of the hydrogen-rich gas is reduced, the gas resource is saved, and the problem of serious hidden danger of atmospheric pollution is solved.
The technical scheme adopted by the invention for solving the technical problems is as follows: an application method of hydrogen-rich gas generated after an LNG process in coke oven heating comprises the following steps:
1) adding hydrogen-rich gas into the pipeline through the hydrogen-rich gas according to 3-5% of the total amount of the gas, and mixing the hydrogen-rich gas into the main heating gas pipeline to form heating mixed gas;
2) the mixed gas in the main gas pipeline is reversed at regular time by a heating exchange device, enters a gas channel in a small flue, flows through a small flue adjusting plate which is specially used for controlling and balancing the uniform distribution of the gas quantity flowing from the slave side to the coke side on the upper part of the small flue, enters a gas heat accumulation chamber, is preheated, enters an air small flue from an air inlet of a wind box, then enters a secondary refining adjusting plate for the gas quantity distribution on the balance machine side and the coke side on the upper part of the air small flue from the air small flue, and then reaches the air heat accumulation chamber from the secondary refining adjusting plate for the gas quantity distribution on the balance machine side and the coke side on the upper;
3) the preheated mixed gas passes through an inclined channel at the upper part of the coal gas regenerator, and the preheated air simultaneously enters the ascending air flow combustion chamber for mixed combustion through an inclined channel at the upper part of the air regenerator;
4) the mixed gas in the ascending airflow combustion chamber and air are mixed and combusted to generate a large amount of heat energy which is supplied to the coal material in the partition wall carbonization chamber to be heated and changed into coke, and the residual hot waste gas enters the descending airflow combustion chamber through the crossing hole;
5) hot waste gas in the downdraft combustion chamber enters the downdraft heat storage chamber through the inclined channel, then flows through the small flue adjusting plate from the downdraft heat storage chamber to enter the small flue, flows through the flue from the small flue, flows through the large chimney from the flue, and is finally discharged into the atmosphere from the large chimney, so that a closed-loop gas flow circulation process is formed.
Furthermore, when the coal gas containing the hydrogen-rich gas in the step 3 is mixed with air for combustion, the combustion effect of the hydrogen-rich gas in the combustion chamber is optimized by adjusting the inclined passage port adjusting brick at the bottom of the updraft combustion chamber so as to improve the combustion efficiency of the coal gas.
Furthermore, when the coal gas and the air containing the hydrogen-rich gas are mixed and combusted in the step 3, the opening of a small flue adjusting plate which is specially used for adjusting the machine side and the coke side of the coal gas quantity and the air quantity on the upper part of the small flue is adjusted, and the long-direction airflow of the single flue of the PW coke oven is reasonably distributed by adjusting the sectional area of the opening, so that the coal gas and the air containing the hydrogen-rich gas are uniformly and stably distributed along the long direction of the updraft combustion chamber.
The invention has the following beneficial effects: according to the method for applying the hydrogen-rich gas after the LNG process in the coke oven heating, disclosed by the invention, the hydrogen-rich gas is used in the coke oven heating, so that the current waste situation of the hydrogen-rich gas is reduced, the gas resource is saved, and the problem of serious hidden danger of atmospheric pollution is solved.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings.
An application method of hydrogen-rich gas generated after an LNG process in coke oven heating comprises the following steps:
1) adding hydrogen-rich gas into the pipeline through the hydrogen-rich gas according to 3-5% of the total amount of the gas, and mixing the hydrogen-rich gas into the main heating gas pipeline to form heating mixed gas;
2) the mixed gas in the main gas pipeline is reversed at regular time by a heating exchange device, enters a gas channel in a small flue, flows through a small flue adjusting plate which is specially used for controlling and balancing the uniform distribution of the gas quantity flowing from the slave side to the coke side on the upper part of the small flue, enters a gas heat accumulation chamber, is preheated, enters an air small flue from an air inlet of a wind box, then enters a secondary refining adjusting plate for the gas quantity distribution on the balance machine side and the coke side on the upper part of the air small flue from the air small flue, and then reaches the air heat accumulation chamber from the secondary refining adjusting plate for the gas quantity distribution on the balance machine side and the coke side on the upper;
3) the preheated mixed gas passes through an inclined channel at the upper part of the coal gas regenerator, and the preheated air simultaneously enters the ascending air flow combustion chamber for mixed combustion through an inclined channel at the upper part of the air regenerator;
4) the mixed gas in the ascending airflow combustion chamber and air are mixed and combusted to generate a large amount of heat energy which is supplied to the coal material in the partition wall carbonization chamber to be heated and changed into coke, and the residual hot waste gas enters the descending airflow combustion chamber through the crossing hole;
5) hot waste gas in the downdraft combustion chamber enters the downdraft heat storage chamber through the inclined channel, then flows through the small flue adjusting plate from the downdraft heat storage chamber to enter the small flue, flows through the flue from the small flue, flows through the large chimney from the flue, and is finally discharged into the atmosphere from the large chimney, so that a closed-loop gas flow circulation process is formed.
And 3, when the coal gas containing the hydrogen-rich gas is mixed with air for combustion, optimizing the combustion effect of the hydrogen-rich gas in the combustion chamber by dialing and adjusting the inclined passage port adjusting brick at the bottom of the updraft combustion chamber so as to improve the combustion efficiency of the coal gas.
And 3, when the coal gas and the air containing the hydrogen-rich gas are mixed and combusted, adjusting the opening of a small flue adjusting plate which is specially used for adjusting the coal gas amount and the air amount and is balanced on the machine side and the coke side on the upper part of the small flue, and adjusting the sectional area of the opening to ensure that the long-direction airflow of the single flue of the PW coke oven is reasonably distributed and the coal gas and the air containing the hydrogen-rich gas are uniformly and stably distributed along the long direction of the updraft combustion chamber.
Claims (3)
1. An application method of hydrogen-rich gas generated after an LNG process in coke oven heating is characterized by comprising the following steps:
1) adding hydrogen-rich gas into the pipeline through the hydrogen-rich gas according to 3-5% of the total amount of the gas, and mixing the hydrogen-rich gas into the main heating gas pipeline to form heating mixed gas;
2) the mixed gas in the main gas pipeline is reversed at regular time by a heating exchange device, enters a gas channel in a small flue, flows through a small flue adjusting plate which is specially used for controlling and balancing the uniform distribution of the gas quantity flowing from the slave side to the coke side on the upper part of the small flue, enters a gas heat accumulation chamber, is preheated, enters an air small flue from an air inlet of a wind box, then enters a secondary refining adjusting plate for the gas quantity distribution on the balance machine side and the coke side on the upper part of the air small flue from the air small flue, and then reaches the air heat accumulation chamber from the secondary refining adjusting plate for the gas quantity distribution on the balance machine side and the coke side on the upper;
3) the preheated mixed gas passes through an inclined channel at the upper part of the coal gas regenerator, and the preheated air simultaneously enters the ascending air flow combustion chamber for mixed combustion through an inclined channel at the upper part of the air regenerator;
4) the mixed gas in the ascending airflow combustion chamber and air are mixed and combusted to generate a large amount of heat energy which is supplied to the coal material in the partition wall carbonization chamber to be heated and changed into coke, and the residual hot waste gas enters the descending airflow combustion chamber through the crossing hole;
5) hot waste gas in the downdraft combustion chamber enters the downdraft heat storage chamber through the inclined channel, then flows through the small flue adjusting plate from the downdraft heat storage chamber to enter the small flue, flows through the flue from the small flue, flows through the large chimney from the flue, and is finally discharged into the atmosphere from the large chimney, so that a closed-loop gas flow circulation process is formed.
2. The method for applying the hydrogen-rich gas after the LNG process in the coke oven heating as claimed in claim 1, wherein in the step 3, when the gas containing the hydrogen-rich gas is mixed with air for combustion, the combustion effect of the hydrogen-rich gas in the combustion chamber is optimized by adjusting an inclined passage port adjusting brick at the bottom of the updraft combustion chamber so as to improve the gas combustion efficiency.
3. The method for applying hydrogen-rich gas after LNG procedure in coke oven heating as claimed in claim 1, wherein, when the gas containing hydrogen-rich gas and air in step 3 are mixed and burned, the opening of the small flue adjusting plate on the upper part of the small flue, which is specially used for adjusting the balance between the machine side and the coke side of the gas amount and the air amount, is adjusted, by adjusting the cross-sectional area of the opening, the long-direction gas flow of the single flue of the PW coke oven is distributed reasonably, and the gas and the air containing hydrogen-rich gas are distributed uniformly and stably along the long direction of the updraft combustion chamber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911406717.5A CN111057558A (en) | 2019-12-31 | 2019-12-31 | Application method of hydrogen-rich gas generated after LNG (liquefied Natural gas) process in coke oven heating |
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| CN201911406717.5A CN111057558A (en) | 2019-12-31 | 2019-12-31 | Application method of hydrogen-rich gas generated after LNG (liquefied Natural gas) process in coke oven heating |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268266A (en) * | 2011-06-21 | 2011-12-07 | 中冶焦耐(大连)工程技术有限公司 | Controllable multi-section-combustion heating molded coke oven |
| CN102925164A (en) * | 2012-11-13 | 2013-02-13 | 中冶焦耐工程技术有限公司 | Coke oven heating method |
| CN203582805U (en) * | 2013-11-29 | 2014-05-07 | 杜晋安 | Outer-heating lignite dry distillation furnace |
| CN103937521A (en) * | 2014-05-07 | 2014-07-23 | 赵新大 | External heating vertical overturn dumping pyrolyzing furnace |
| CN107216890A (en) * | 2016-03-22 | 2017-09-29 | 科利特环能科技（大连）有限公司 | A kind of side-mounted destructive distillation device and its biomass carbonization technique |
| CN108315025A (en) * | 2018-03-30 | 2018-07-24 | 中冶焦耐(大连)工程技术有限公司 | A kind of carbonization chamber upper space temperature regulation structure and adjusting method |
| CN108485686A (en) * | 2018-05-28 | 2018-09-04 | 青岛伊诺威能源化工新技术有限公司 | Dynamic heat solid organic matters pyrolysis combination unit inside and outside biserial mixture length |
| CN109097070A (en) * | 2018-11-02 | 2018-12-28 | 刘元明 | Vertical heat recovery coke oven |
-
2019
- 2019-12-31 CN CN201911406717.5A patent/CN111057558A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268266A (en) * | 2011-06-21 | 2011-12-07 | 中冶焦耐(大连)工程技术有限公司 | Controllable multi-section-combustion heating molded coke oven |
| CN102925164A (en) * | 2012-11-13 | 2013-02-13 | 中冶焦耐工程技术有限公司 | Coke oven heating method |
| CN203582805U (en) * | 2013-11-29 | 2014-05-07 | 杜晋安 | Outer-heating lignite dry distillation furnace |
| CN103937521A (en) * | 2014-05-07 | 2014-07-23 | 赵新大 | External heating vertical overturn dumping pyrolyzing furnace |
| CN107216890A (en) * | 2016-03-22 | 2017-09-29 | 科利特环能科技（大连）有限公司 | A kind of side-mounted destructive distillation device and its biomass carbonization technique |
| CN108315025A (en) * | 2018-03-30 | 2018-07-24 | 中冶焦耐(大连)工程技术有限公司 | A kind of carbonization chamber upper space temperature regulation structure and adjusting method |
| CN108485686A (en) * | 2018-05-28 | 2018-09-04 | 青岛伊诺威能源化工新技术有限公司 | Dynamic heat solid organic matters pyrolysis combination unit inside and outside biserial mixture length |
| CN109097070A (en) * | 2018-11-02 | 2018-12-28 | 刘元明 | Vertical heat recovery coke oven |
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Application publication date: 20200424 |
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