CN210088879U - Be applicable to coking industry exhaust gas treatment system - Google Patents
Be applicable to coking industry exhaust gas treatment system Download PDFInfo
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- CN210088879U CN210088879U CN201920479057.2U CN201920479057U CN210088879U CN 210088879 U CN210088879 U CN 210088879U CN 201920479057 U CN201920479057 U CN 201920479057U CN 210088879 U CN210088879 U CN 210088879U
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Abstract
The utility model relates to a be applicable to coking industry waste gas treatment system, this system include heat accumulation formula thermal oxidizer, with waste gas conveying system and the purge system that heat accumulation formula thermal oxidizer entry I links to each other, with heat accumulation formula thermal oxidizer export I continuous chimney and with combustor system and the high temperature water-cooling valve system that the combustion chamber links to each other in the heat accumulation formula thermal oxidizer. The waste gas conveying system, the purging system and the high-temperature water-cooling valve system are respectively connected with the chimney. The utility model discloses not only the energy consumption is low, and the purifying rate is high moreover, has considerable economic nature, has filled internal blank of being applied to the processing coking industry waste gas process with the RTO device to a certain extent.
Description
Technical Field
The utility model relates to an environment protection technical field especially relates to a be applicable to coking industry waste gas treatment system.
Background
With the increasing prominence of ecological environmental problems such as large-scale haze weather caused by utilization of high-carbon energy such as coal, petroleum and the like in China and the improvement of requirements of human beings on green ecological environment, a series of rules, policies and standards such as air pollution prevention and control law, air pollution prevention and control action plan, volatile organic compound pollution prevention and control working scheme and the like are put out and implemented in succession, and the coking industry is used as the basic industry in the industrial field and faces greater pressure for treating waste gas.
A Regenerative Thermal Oxidizer (hereinafter referred to as RTO) is a mainstream product in the organic waste gas treatment industry due to its characteristics of simple operation, convenient maintenance, high Thermal efficiency, low operation cost, no secondary pollution and the like. Because the waste gas produced in the coking industry has the particularity of large change of the concentration of the waste gas, complex components, difficult treatment and the like, the problems of pipeline blockage, unstable operation, higher cost and energy consumption, low safety performance, explosion and the like caused by coking exist, and the application of RTO in the treatment of the waste gas produced in the coking industry is limited. At present, the process for treating waste gas produced in the coking industry by using RTO is blank at home, and no mature process exists.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an improve waste gas purification efficiency's be applicable to coking industry waste gas treatment system is provided.
In order to solve the problem, the utility model relates to a be applicable to coking industry waste gas treatment system, its characterized in that: the system comprises a heat accumulating type thermal oxidizer, a waste gas conveying system and a purging system which are connected with an inlet I of the heat accumulating type thermal oxidizer, a chimney connected with an outlet I of the heat accumulating type thermal oxidizer, and a burner system and a high-temperature water-cooling valve system which are connected with a combustion chamber in the heat accumulating type thermal oxidizer; the waste gas conveying system, the purging system and the high-temperature water-cooling valve system are respectively connected with the chimney.
The waste gas conveying system comprises a waste gas mixing tank, an oil filter, a waste gas conveying fan and a flame arrester; an inlet II of the waste gas mixing tank is provided with a waste gas inlet pipeline and an air inlet pipeline which are connected together, and an outlet II of the waste gas mixing tank is connected with an inlet III of the oil filter; an outlet III of the oil filter is connected with an inlet IV of the waste gas conveying fan, and an outlet IV of the waste gas conveying fan is connected with an inlet V of the flame arrester; and an outlet V of the flame arrester is respectively connected with an inlet I of the heat accumulating type thermal oxidizer and the chimney through a pipeline I.
The purging system comprises a buffer tank and a purging fan; an inlet VI of the buffer tank is provided with a purge air pipeline and a purge gas purge pipeline which are connected together, an outlet VI of the buffer tank is connected with an inlet VII of the purge fan, and an outlet VII of the purge fan is connected with an inlet I of the heat accumulating type thermal oxidizer; the purified gas purging pipeline is connected with the chimney through a pipeline II.
The burner system comprises a burner, a filter, a booster fan and a combustion fan; a burner of the combustor is arranged in the combustion chamber; an inlet VIII of the filter is connected with a gas conveying pipeline; an outlet VIII of the filter is connected with an inlet IX of the booster fan, and the outlet IX of the booster fan is respectively connected with an inlet X of the combustion engine through a coal gas main fire pipeline and a coal gas ignition pipeline; and an inlet X of the combustion engine is connected with an outlet X of the combustion-supporting fan, and an inlet XI of the combustion-supporting fan is connected with a combustion-supporting air pipeline.
The high-temperature water-cooling valve system comprises a high-temperature water-cooling valve, a water supply pipeline and a water drainage pipeline, wherein the water supply pipeline and the water drainage pipeline are connected with cooling water; an inlet XII of the high-temperature water-cooling valve is connected with the combustion chamber through a pipeline III, and an outlet XI of the high-temperature water-cooling valve is connected with the chimney; and the valve body of the high-temperature water-cooling valve is respectively provided with the water supply pipeline and the water drainage pipeline.
And an online waste gas concentration detection instrument is arranged on a pipeline between the waste gas mixing tank and the oil filter.
The purge gas in the purge system is composed of a mixture of purge gas and air.
Compared with the prior art, the utility model has the following advantage:
1. the utility model discloses use the RTO system to the treatment process of coking industry waste gas, because the RTO device includes that a set of heat recovery rate is up to the ceramic packed bed heat exchanger more than 96%, only consume few fuel (when exhaust gas concentration is greater than 450ppm, except starting, need not use auxiliary fuel) in the course of the treatment, if exhaust gas concentration is higher can recycle again, not only the energy consumption is low, and the purifying rate is high, considerable economic nature has, the blank of the domestic RTO device of being applied to the processing coking industry waste gas production technology has been filled to a certain extent.
2. The utility model discloses substitute the natural gas in the conventional RTO technology with the produced coal gas of coking process for the fuel, make full use of the current resource of coking trade, reduced the supply system and the equipment of natural gas, to a great extent has reduced the fuel cost.
3. The utility model discloses sweeping gas in the sweeping system comprises purified gas and air mixture, utilizes combustion chamber exhaust high temperature purified gas heated air, has realized energy reutilization, and efficiency improves, satisfies the development requirement of circular economy.
4. The utility model discloses to the unstable problem of coking in-process production coal gas pressure, designed coal gas steady voltage fan system, effectively guaranteed the stable supply of coal gas.
5. The utility model discloses carry out the heating of purge gas to the purge system with the gas recovery after the combustion chamber purifies, realized energy reutilization, efficiency obtains further improvement.
6. The utility model discloses carried out steady voltage control to the gas, carried out the cooling water cooling to high temperature water-cooling valve, improved the security performance of device.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart of the present invention.
In the figure: 1-regenerative thermal oxidizer, 11-combustion chamber, 12-thermal storage chamber, 13-gas collection chamber, 2-waste gas conveying system, 21-waste gas inlet pipeline, 22-air inlet pipeline, 23-waste gas mixing tank, 24-oil filter, 25-waste gas conveying fan, 26-fire arrestor, 3-purging system, 31-purging fan, 32-buffer tank, 33-purging air pipeline, 34-purified gas purging pipeline, 4-chimney, 5-burner system, 51-burner, 52-gas conveying pipeline, 53-filter, 54-booster fan, 55-gas main fire pipeline, 56-gas ignition pipeline, 57-combustion air pipeline, 58-combustion fan, 6-high temperature water cooling valve system, 61-high temperature water cooling valve, 62-water supply pipeline, 63-drainage pipeline.
Detailed Description
As shown in fig. 1, the waste gas treatment system suitable for the coking industry comprises a regenerative thermal oxidizer 1, a waste gas conveying system 2 and a purging system 3 which are connected with an inlet i of the regenerative thermal oxidizer 1, a chimney 4 connected with an outlet i of the regenerative thermal oxidizer 1, a burner system 5 and a high-temperature water cooling valve system 6 which are connected with a combustion chamber 11 in the regenerative thermal oxidizer 1. The waste gas conveying system 2, the purging system 3 and the high-temperature water-cooling valve system 6 are respectively connected with a chimney 4.
Wherein: the heat accumulating type thermal oxidizer 1 comprises a heat accumulating chamber 12, a gas collecting chamber 13, a combustion chamber 11 and a reversing valve; wherein the combustion chamber 11 is a place for providing oxidation for the waste gas, the waste gas stays in the combustion chamber for a certain time, and oxidation reaction is carried out at high temperature, so that hydrocarbon in the waste gas is changed into CO2And H2O, directly discharged to the atmosphere; the heat storage filler is filled in the heat storage chamber 12, has the functions of increasing the temperature of inlet waste gas and reducing the temperature of a purified gas outlet, and has the effects of saving energy and reducing consumption and obvious effect; the gas collection chamber 13 is a common cavity for waste gas inlet, purified gas outlet and purge gas inlet, and plays a role in uniformly distributing airflow; the flow direction and the flow rate of gas entering and exiting the gas collection chamber are changed circularly through the periodic switching of the reversing valve, the conversion of three working states of each regenerator 12, namely gas inlet, gas exhaust and purging, is realized, and the continuous purification of the production waste gas in the coking industry is completed.
The waste gas conveying system 2 comprises a waste gas mixing tank 23, an oil filter 24, a waste gas conveying fan 25 and a flame arrester 26; an inlet II of the waste gas mixing tank 23 is provided with a waste gas inlet pipeline 21 and an air inlet pipeline 22 which are connected together, so that potential safety hazards caused by overhigh waste gas concentration are prevented; the outlet II of the waste gas mixing tank 23 is connected with the inlet III of the oil filter 24; the outlet III of the oil filter 24 is connected with the inlet IV of an exhaust gas conveying fan 25, and the outlet IV of the exhaust gas conveying fan 25 is connected with the inlet V of a flame arrester 26; an outlet V of the flame arrester 26 is respectively connected with an inlet I of the regenerative thermal oxidizer 1 and the chimney 4 through a pipeline I. The waste gas mixed with the air is sent into an oil filter 24 through a waste gas conveying fan 25 for tar filtering so as to prevent the filler in the heat accumulation chamber from being blocked; the flame arrester 26 is located between the regenerative thermal oxidizer 1 and the exhaust gas delivery fan 25, and functions to protect front-end equipment.
The purging system 3 comprises a buffer tank 32 and a purging fan 31; an inlet VI of the buffer tank 32 is provided with a purge air pipeline 33 and a purge gas purge pipeline 34 which are connected together, an outlet VI of the buffer tank is connected with an inlet VII of a purge fan 31, and the outlet VII of the purge fan 31 is connected with an inlet I of the heat accumulating type thermal oxidizer 1; the purge gas line 34 is connected to the stack 4 via line ii. Purge gas formed by mixing purified gas and air is sent into the RTO 1 through the purge fan 31, and the purge system 3 heats the purge air by using the heat of the purified gas, so that the purposes of saving energy and reducing consumption are achieved.
The burner system 5 includes a burner 51, a filter 53, a booster fan 54, and a combustion fan 58; the burner of the burner 51 is arranged in the combustion chamber 11; the inlet VIII of the filter 53 is connected with a gas conveying pipeline 52; an outlet VIII of the filter 53 is connected with an inlet IX of a booster fan 54, and the outlet IX of the booster fan 54 is respectively connected with an inlet X of the combustion engine 51 through a coal gas main fire pipeline 55 and a coal gas ignition pipeline 56; the inlet X of the burner 51 is connected to the outlet X of the combustion fan 58, and the inlet XI of the combustion fan 58 is connected to the combustion air line 57. Wherein, the coal gas is stabilized by a booster fan 54 and then is conveyed to a filter 53 by a coal gas conveying pipeline 52 for impurity filtration, the filtered clean coal gas is conveyed to a burner 51 for ignition work by a coal gas ignition pipeline 56, and the coal gas is supplied by a coal gas main fire pipeline 55 after the flame is stabilized; the combustion air is supplied from the combustion air line 57 to the burner 51 by the combustion fan 58 to supply oxygen for gas combustion.
The high-temperature water-cooling valve system 6 comprises a high-temperature water-cooling valve 61, a water supply pipeline 62 connected with cooling water and a water discharge pipeline 63; an inlet XII of the high-temperature water-cooling valve 61 is connected with the combustion chamber 11 through a pipeline III, and an outlet XI of the high-temperature water-cooling valve is connected with the chimney 4; the valve body of the high-temperature water-cooling valve 61 is provided with a water supply pipeline 62 and a water discharge pipeline 63 respectively. The high-temperature water-cooling valve system 6 adopts a lining refractory material and an external water-cooling high-temperature valve process, and provides guarantee for the safety of the high-temperature water-cooling valve 61.
The utility model discloses in the connection between each system/device generally be the tube coupling.
When the device is used, production waste gas in the coking industry sequentially enters the waste gas mixing tank 23 and the oil filter 24 through the waste gas inlet pipeline 21, and a waste gas concentration online detection instrument is arranged on a pipeline between the waste gas mixing tank 23 and the oil filter 24. When the concentration of the waste gas in the pipeline is too high, air enters the waste gas mixing tank 23 through the air inlet pipeline 22 to dilute the waste gas, so that explosion accidents caused by the too high concentration of the waste gas are prevented; when the exhaust gas concentration is at a normal value, the air inlet line 22 is disconnected. The waste gas from the waste gas mixing tank 23 enters the oil filter 24, so that the problems of coking, blockage and the like of subsequent equipment caused by tar in the waste gas are prevented. The waste gas conveying fan 25 performs frequency conversion control according to a pressure signal between the oil filter 24 and the waste gas conveying fan 25, and waste gas enters the RTO 1 after being subjected to anti-backfire protection through the flame arrester 26.
The coal gas enters a filter 53 through a coal gas conveying pipeline 52 for impurity filtration, the filtered coal gas is conveyed to a coal gas main fire pipeline 55 and a coal gas ignition pipeline 56 through a coal gas booster fan 54, and the coal gas booster fan 54 carries out frequency conversion control according to a pressure signal of a pipeline at the rear end of the coal gas booster fan. When the burner system 5 is in a starting state, the coal gas is conveyed to the burner 51 through the coal gas ignition pipeline 56 for ignition; when the burner system 5 is in a steady operation state, the gas is delivered to the burner 51 via the gas main fire line 55 for continuous supply operation of the gas. Combustion air is supplied to the burner 51 from a combustion air line 57 through a combustion air blower 58 for gas combustion and oxygen supply operation, and is controlled by proportional control valves interlocked with a gas main fire line 55 and a gas ignition line 56, respectively. The temperature of the combustion chamber 11 connected with the combustor system 5 is ensured to be maintained at 700-1000 ℃ by the above method.
After the temperature of the combustion chamber 11 reaches the design temperature, the combustor system 5 connected with the RTO combustion chamber 11 is closed, and the heat supply work is stopped; when the temperature of the combustion chamber 11 exceeds the design temperature, the high-temperature water-cooling valve 61 connected with the RTO combustion chamber 11 is opened, meanwhile, cooling water enters the high-temperature water-cooling valve 61 through the water supply pipeline 62 to realize cooling of the valve body, and the heated cooling water is discharged through the water discharge pipeline 63; after the above operation, the temperature of the combustion chamber 11 still exceeds the design temperature, the combustion fan 58 of the burner system 5 is started to supply air for cooling the combustion chamber 11; the combustion chamber 11 is provided with a high-temperature automatic alarm system, when the temperature reaches 1180 ℃, the system automatically alarms, and when the temperature reaches 1200 ℃, in order to ensure the safety of the RTO 1, the RTO 1 starts an automatic off-line program.
When the RTO 1 is off-line, the combustion system is shut down, the waste gas conveying fan 25 is decelerated and stopped, the combustion fan 58 and the purging fan 31 are started, fresh air is introduced into the RTO gas collection chamber 13 and the combustion chamber 11, and the RTO 1 cooling program is started.
Claims (7)
1. The utility model provides a be applicable to coking industry exhaust gas treatment system which characterized in that: the system comprises a heat accumulating type thermal oxidizer (1), a waste gas conveying system (2) and a purging system (3) which are connected with an inlet I of the heat accumulating type thermal oxidizer (1), a chimney (4) which is connected with an outlet I of the heat accumulating type thermal oxidizer (1), a burner system (5) which is connected with a combustion chamber (11) in the heat accumulating type thermal oxidizer (1) and a high-temperature water-cooling valve system (6); the waste gas conveying system (2), the purging system (3) and the high-temperature water-cooling valve system (6) are respectively connected with the chimney (4).
2. The system of claim 1, wherein the system is adapted for use in the coking industry: the waste gas conveying system (2) comprises a waste gas mixing tank (23), an oil filter (24), a waste gas conveying fan (25) and a flame arrester (26); an inlet II of the waste gas mixing tank (23) is provided with a waste gas inlet pipeline (21) and an air inlet pipeline (22) which are connected together, and an outlet II of the waste gas mixing tank is connected with an inlet III of the oil filter (24); the outlet III of the oil filter (24) is connected with the inlet IV of the waste gas conveying fan (25), and the outlet IV of the waste gas conveying fan (25) is connected with the inlet V of the flame arrester (26); an outlet V of the flame arrester (26) is respectively connected with an inlet I of the heat accumulating type thermal oxidizer (1) and the chimney (4) through a pipeline I.
3. The system of claim 1, wherein the system is adapted for use in the coking industry: the purging system (3) comprises a buffer tank (32) and a purging fan (31); an inlet VI of the buffer tank (32) is provided with a purge air pipeline (33) and a purge gas purge pipeline (34) which are connected together, an outlet VI of the buffer tank is connected with an inlet VII of the purge fan (31), and an outlet VII of the purge fan (31) is connected with an inlet I of the heat accumulating type thermal oxidizer (1); the purified gas purging pipeline (34) is connected with the chimney (4) through a pipeline II.
4. The system of claim 1, wherein the system is adapted for use in the coking industry: the burner system (5) comprises a burner (51), a filter (53), a booster fan (54) and a combustion fan (58); the burner of the burner (51) is arranged in the combustion chamber (11); the inlet VIII of the filter (53) is connected with a gas conveying pipeline (52); an outlet VIII of the filter (53) is connected with an inlet IX of the booster fan (54), and the outlet IX of the booster fan (54) is respectively connected with an inlet X of the combustion machine (51) through a coal gas main fire pipeline (55) and a coal gas ignition pipeline (56); an inlet X of the combustion machine (51) is connected with an outlet X of the combustion fan (58), and an inlet XI of the combustion fan (58) is connected with a combustion air pipeline (57).
5. The system of claim 1, wherein the system is adapted for use in the coking industry: the high-temperature water cooling valve system (6) comprises a high-temperature water cooling valve (61), a water supply pipeline (62) connected with cooling water and a water discharge pipeline (63); an inlet XII of the high-temperature water-cooling valve (61) is connected with the combustion chamber (11) through a pipeline III, and an outlet XI of the high-temperature water-cooling valve is connected with the chimney (4); the valve body of the high-temperature water-cooling valve (61) is respectively provided with the water supply pipeline (62) and the water discharge pipeline (63).
6. The system of claim 2, wherein the system is adapted for use in the coking industry: an online exhaust gas concentration detection instrument is arranged on a pipeline between the exhaust gas mixing tank (23) and the oil filter (24).
7. The system of claim 1, wherein the system is adapted for use in the coking industry: the purging gas in the purging system (3) is formed by mixing a purified gas and air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920479057.2U CN210088879U (en) | 2019-04-10 | 2019-04-10 | Be applicable to coking industry exhaust gas treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920479057.2U CN210088879U (en) | 2019-04-10 | 2019-04-10 | Be applicable to coking industry exhaust gas treatment system |
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| Publication Number | Publication Date |
|---|---|
| CN210088879U true CN210088879U (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920479057.2U Active CN210088879U (en) | 2019-04-10 | 2019-04-10 | Be applicable to coking industry exhaust gas treatment system |
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| CN (1) | CN210088879U (en) |
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- 2019-04-10 CN CN201920479057.2U patent/CN210088879U/en active Active
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