CN216106773U - Dry quenching circulating gas purification device - Google Patents
Dry quenching circulating gas purification device Download PDFInfo
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- CN216106773U CN216106773U CN202121819859.7U CN202121819859U CN216106773U CN 216106773 U CN216106773 U CN 216106773U CN 202121819859 U CN202121819859 U CN 202121819859U CN 216106773 U CN216106773 U CN 216106773U
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Abstract
The utility model relates to a coke dry quenching circulating gas purification device, and belongs to the technical field of coke quenching energy-saving and environment-friendly equipment. The technical scheme of the utility model is as follows: the gas washing medium pipeline (10) is arranged at the top of the purification device (6), and the inlet valve (11) of the gas washing medium pipeline is arranged on the gas washing medium pipeline (10); the circulating gas inlet valve (8) is communicated with the bottom layer in the purifying device (6), the gas-liquid separator (14) is arranged at the top layer in the purifying device (6), and the circulating gas outlet valve (9) is arranged above the purifying device (6); the sewage draining valve (12) is arranged at the bottom of the purifying device (6); the liquid level meter (13) is arranged on the side surface of the purifying device (6). The utility model has the beneficial effects that: the integrated design of gas washing and drying has simple and compact structure and high impurity removal rate; the gas-liquid space distribution is reasonable, the gas-liquid separation of the purified circulating gas is facilitated, the circulating gas is dry and clean, the cooling effect is obvious, and the detection is sensitive, accurate and reliable.
Description
Technical Field
The utility model relates to a coke dry quenching circulating gas purification device, and belongs to the field of coke quenching energy-saving and environment-friendly equipment.
Background
The promotion of the dry quenching technology is still in a development stage in China, a dry quenching project of Handan Bao coke plants is put into production and used in 10 months in 2008, a dry quenching gas circulation system is one of important dry quenching systems, circulating gas is an intermediate heat carrier in the dry quenching gas circulation system, and in normal production operation of dry quenching, the circulating gas contains trace gases such as H2, CO, O2 and CO2 and carries a small amount of impurities such as coke powder, the gases such as H2 and CO are all inflammable and explosive gases, and O2 is combustion-supporting gas, so that the content of H2 and CO not only affects the quenching of coke, but also directly affects the safe production of dry quenching once reaching an explosion critical point. In actual operation of the dry quenching gas analyzer, faults occur frequently, monitoring is inaccurate, and major potential safety production hazards exist.
The coke dry quenching gas circulation system device mainly comprises: the system comprises a dry quenching furnace, a boiler, a circulating fan, an online gas analyzer and gas circulating pipelines connected among the devices. The dry quenching circulating gas is an intermediate heat carrier, absorbs the sensible heat of the coke in a dry quenching furnace to cool the coke, enters a boiler after absorbing heat, and transfers the heat to boiler water in a boiler tube of the boiler to produce superheated steam; the circulating fan is a power device for gas circulation; the process flow is as follows: the hot coke at about 1000 ℃ is loaded into a dry quenching furnace from a furnace mouth, the coke moves from top to bottom, low-temperature circulating gas is pressurized by a circulating fan and then enters the dry quenching furnace from an air supply device at the bottom of the dry quenching furnace, flows upwards to pass through a coke bed layer, performs countercurrent heat exchange with the coke, and is cooled to below 200 ℃ and discharged from the bottom of the dry quenching furnace; the temperature of the circulating gas after absorbing the sensible heat of coke is raised to 900-960 ℃, the circulating gas flows upwards, the circulating gas is converged through an outlet of the dry quenching furnace and enters a boiler to exchange heat with the inner water of the boiler to generate superheated steam, the temperature of the circulating gas is reduced to below 180 ℃ after the heat exchange of the boiler, the circulating gas is blown into the dry quenching furnace again by a circulating fan for recycling, a circulating gas on-line analyzer is arranged at an inlet of the dry quenching furnace, the gas analyzer is mainly used for monitoring the concentration of the circulating gas in real time and monitoring the concentration of the circulating gas on line, an operator is guided to take effective measures in time, combustible components such as H2, CO and the like in the circulating gas are controlled within a safe range, and a key instrument for ensuring the safe and stable operation of the dry quenching furnace is provided.
Disclosure of Invention
The utility model aims to provide a dry quenching circulating gas purification device which has the advantages of integrated gas washing and drying design, simple and compact structure and high impurity removal rate; the gas-liquid space distribution is reasonable, the gas-liquid separation of the purified circulating gas is facilitated, the purified circulating gas is dried and cleaned by adopting the gas-liquid separator, the cooling effect of the circulating gas is remarkable, the temperature of the purified circulating gas is kept at 30-35 ℃, the optimal working temperature of the gas analyzer is reached, the gas analyzer is smooth and stable in operation, the detection is sensitive, accurate and reliable, and the problems in the background technology are effectively solved.
The technical scheme of the utility model is as follows: a dry quenching circulating gas purification device comprises a circulating gas sampling tube, a purification device, a circulating gas inlet valve, a circulating gas outlet valve, a gas washing medium pipeline inlet valve, a sewage discharge valve, a liquid level meter and a gas-liquid separator, wherein the circulating gas purification device is arranged between a gas circulating flue at an inlet of a dry quenching furnace and a gas analyzer and is connected with the gas circulating flue and the gas analyzer through the sampling tube; the gas washing medium pipeline is arranged at the top of the purification device, and the inlet valve of the gas washing medium pipeline is arranged on the gas washing medium pipeline; the circulating gas inlet valve is communicated with the inner bottom layer of the purification device, the gas-liquid separator is arranged at the inner top layer of the purification device, and the circulating gas outlet valve is arranged above the purification device and is communicated with the gas-liquid separator through a pipeline; the sewage draining valve is arranged at the bottom of the purifying device; the liquid level meter is arranged on the side surface of the purifying device and is communicated with the inside of the purifying device.
And the gas washing medium is conveyed in the gas washing medium pipeline and is injected into the purifying device through the gas washing medium pipeline to the 1/2 liquid level position of the liquid level meter. The temperature of the scrubbing medium is 20-30 ℃.
And the circulating gas purification device is arranged at a positive pressure section of a gas circulating flue at the inlet of the dry quenching furnace. The pressure of the circulating gas is 4KPa, and the circulating gas is injected into the purifying device through a circulating gas inlet valve.
The utility model has the beneficial effects that: the integrated design of gas washing and drying has simple and compact structure and high impurity removal rate; the gas-liquid space distribution is reasonable, the gas-liquid separation of the purified circulating gas is facilitated, the purified circulating gas is dried and cleaned by adopting the gas-liquid separator, the cooling effect of the circulating gas is remarkable, the temperature of the purified circulating gas is kept at 30-35 ℃, the optimal working temperature of the gas analyzer is reached, and the gas analyzer is smooth and stable in operation and sensitive, accurate and reliable in detection.
Drawings
FIG. 1 is a schematic diagram of the system connections of the present invention;
FIG. 2 is a schematic structural view of the present invention;
in the figure: the system comprises a dry quenching furnace 1, a waste heat boiler 2, a circulating fan 3, a dry quenching furnace inlet gas circulating flue 4, a circulating gas sampling pipe 5, a purifying device 6, a gas analyzer 7, a circulating gas inlet valve 8, a circulating gas outlet valve 9, a gas washing medium pipeline 10, a gas washing medium pipeline inlet valve 11, a sewage discharge valve 12, a liquid level meter 13 and a gas-liquid separator 14.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present invention with reference to the drawings of the embodiments, and it is obvious that the described embodiments are a small part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
A dry quenching circulating gas purification device comprises a circulating gas sampling pipe 5, a purification device 6, a circulating gas inlet valve 8, a circulating gas outlet valve 9, a gas washing medium pipeline 10, a gas washing medium pipeline inlet valve 11, a sewage discharge valve 12, a liquid level meter 13 and a gas-liquid separator 14, wherein the circulating gas purification device 6 is arranged between a gas circulating flue 4 at an inlet of a dry quenching furnace and a gas analyzer 7 and is connected with the gas circulating flue 4 and the gas analyzer 7 through the sampling pipe 5; the gas washing medium pipeline 10 is arranged at the top of the purification device 6, and the inlet valve 11 of the gas washing medium pipeline is arranged on the gas washing medium pipeline 10; the circulating gas inlet valve 8 is communicated with the inner bottom layer of the purification device 6, the gas-liquid separator 14 is arranged at the inner top layer of the purification device 6, and the circulating gas outlet valve 9 is arranged above the purification device 6 and is communicated with the gas-liquid separator 14 through a pipeline; the sewage draining valve 12 is arranged at the bottom of the purifying device 6; the liquid level meter 13 is provided on the side of the purification apparatus 6, and communicates with the inside of the purification apparatus 6.
The washing medium is conveyed in the washing medium pipeline 10, and the washing medium is injected into the purifying device 6 through the washing medium pipeline 10 to the 1/2 liquid level position of the liquid level meter 13. The temperature of the scrubbing medium is 20-30 ℃.
And the circulating gas purification device 6 is arranged at the positive pressure section of the gas circulating flue 4 at the inlet of the dry quenching furnace. The recycle gas was injected into the interior of the purification apparatus 6 at a pressure of 4KPa through the recycle gas inlet valve 8.
In practical application, the circulating gas purification device 6 is arranged between the gas circulating flue 4 at the inlet of the dry quenching furnace and the gas analyzer 7, the gas circulating flue 4 and the gas analyzer are connected through the sampling pipe 5, the gas circulating flue 4 at the inlet of the dry quenching furnace is a positive pressure section, and the pressure of the circulating gas is about 4 KPa. Opening an inlet valve 11 of a gas washing medium pipeline, and injecting a gas washing medium into the gas washing device 6, wherein the temperature of the gas washing medium is about 20-30 ℃ to 1/2 liquid level of the liquid level meter 13; opening a circulating gas inlet valve 8 and a circulating gas outlet valve 9, leading the circulating gas into the bottom of the gas washing device 6, and removing impurities such as coke powder and the like through a gas washing medium layer with a certain height; the purified circulating gas flows upwards to enter a gas-liquid separator 14 for gas-liquid separation, the separated dry circulating gas is led out from a pipeline of a circulating gas outlet and is sent to a gas analyzer 7 for the gas analyzer 7 to perform online real-time monitoring and analysis, and the separated liquid falls back to the inside of the purifying device 6. And opening a blow-down valve 12 of the gas washing device periodically according to the running condition of the gas analyzer 7 to discharge impurities in the purifying device, then opening an inlet valve 11 of a gas washing medium pipeline to inject a gas washing medium into the device, and continuously purifying the circulating gas.
The circulating gas containing dust is introduced into the bottom of the purification device, the circulating gas is purified by the scrubbing medium with a certain height, and the removal rate of impurities such as coke powder is high and the effect is good.
The purification device adopts a liquid level meter on site, has simple and convenient operation, is convenient for adjusting the gas-liquid space and is beneficial to gas-liquid separation.
Simple structure, the integrative design of circulating gas purification, drying, separation effect is good.
The temperature of the circulating gas purified by the utility model is kept at 30-35 ℃, which is the optimal working temperature of the gas analyzer, is beneficial to the operation of the gas analyzer, and has sensitive and accurate detection.
Claims (3)
1. A dry quenching circulating gas purification device is characterized in that: the device comprises a circulating gas sampling pipe (5), a purifying device (6), a circulating gas inlet valve (8), a circulating gas outlet valve (9), a gas washing medium pipeline (10), a gas washing medium pipeline inlet valve (11), a sewage discharge valve (12), a liquid level meter (13) and a gas-liquid separator (14), wherein the circulating gas purifying device (6) is arranged between a gas circulating flue (4) at an inlet of a dry quenching furnace and a gas analyzer (7) and is connected with the gas circulating flue and the gas analyzer through the sampling pipe (5); the gas washing medium pipeline (10) is arranged at the top of the purification device (6), and the inlet valve (11) of the gas washing medium pipeline is arranged on the gas washing medium pipeline (10); the circulating gas inlet valve (8) is communicated with the inner bottom layer of the purification device (6), the gas-liquid separator (14) is arranged at the inner top layer of the purification device (6), and the circulating gas outlet valve (9) is arranged above the purification device (6) and is communicated with the gas-liquid separator (14) through a pipeline; the sewage draining valve (12) is arranged at the bottom of the purifying device (6); the liquid level meter (13) is arranged on the side surface of the purifying device (6) and is communicated with the inside of the purifying device (6).
2. The dry quenching circulating gas purification device of claim 1, wherein: and a gas washing medium is conveyed in the gas washing medium pipeline (10), and is injected into the purifying device (6) through the gas washing medium pipeline (10) to the 1/2 liquid level position of the liquid level meter (13).
3. The dry quenching circulating gas purification device of claim 1, wherein: and the circulating gas purification device (6) is arranged at the positive pressure section of the gas circulating flue (4) at the inlet of the dry quenching furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121819859.7U CN216106773U (en) | 2021-08-05 | 2021-08-05 | Dry quenching circulating gas purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121819859.7U CN216106773U (en) | 2021-08-05 | 2021-08-05 | Dry quenching circulating gas purification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216106773U true CN216106773U (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121819859.7U Active CN216106773U (en) | 2021-08-05 | 2021-08-05 | Dry quenching circulating gas purification device |
Country Status (1)
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| CN (1) | CN216106773U (en) |
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2021
- 2021-08-05 CN CN202121819859.7U patent/CN216106773U/en active Active
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