CN210613338U - Tubular furnace flue gas is in coordination with coke oven and is recycled processing system - Google Patents
Tubular furnace flue gas is in coordination with coke oven and is recycled processing system Download PDFInfo
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- CN210613338U CN210613338U CN201921474214.7U CN201921474214U CN210613338U CN 210613338 U CN210613338 U CN 210613338U CN 201921474214 U CN201921474214 U CN 201921474214U CN 210613338 U CN210613338 U CN 210613338U
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- flue gas
- coke oven
- tubular furnace
- coke
- circulating fan
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Abstract
The utility model relates to a tubular furnace flue gas handles the field, discloses a tubular furnace flue gas and coke oven recycle processing system in coordination, and its technical scheme main points are tubular furnace flue gas and coke oven recycle processing system in coordination, including the tubular furnace, the tubular furnace includes furnace body and chimney, and the furnace body top is provided with side calandria mouth, and side calandria mouth is connected with the flue gas valve, and the flue gas valve is connected with the induced air pipeline, and the induced air pipeline is connected with the coke oven unit, and the coke oven unit includes coke oven and the circulating fan who takes the cooler, and circulating fan's air outlet and coke oven bottom intercommunication, circulating fan's air intake and coke oven top intercommunication; an air outlet branch of the circulating fan is connected with a sulfur and nitrate balance calandria, and the sulfur and nitrate balance calandria is sequentially connected with a desulfurization unit and a denitrification unit; the induced draft pipeline comprises a coke receiving pipe and a machine connecting pipe, the coke receiving pipe is communicated with the interior of the coke oven, the machine connecting pipe is connected with an air inlet of the circulating fan, the flue gas utilization is improved, the flue gas is treated in a centralized mode, a flue gas treatment system does not need to be arranged independently, and the cost is reduced.
Description
Technical Field
The utility model relates to a tubular furnace flue gas handles field, in particular to tubular furnace flue gas is processing system of recycling in coordination with coke oven.
Background
Flue gas is a mixture of gas and smoke dust and is the main cause of atmospheric pollution in residential areas. The components of the flue gas are complex, the gas comprises water vapor, sulfur dioxide, nitrogen, oxygen, carbon monoxide, carbon dioxide, hydrocarbons, nitrogen oxides and the like, and the smoke comprises ash, coal particles, oil drops, pyrolysis products and the like of the fuel.
The existing tubular furnace comprises a furnace body and a chimney, wherein flue gas generated after combustion of gas in the furnace body is discharged from the top end of the chimney, the content of dust and sulfide in the flue gas seriously exceeds the standard, and the flue gas can be discharged only after being treated. The existing method only adopts dust separation or adopts separate dust separation and desulfurization treatment to the flue gas of the tube furnace, the former has poor effect of removing harmful gases such as sulfide and the like, and the latter has high cost, so the improvement is needed.
SUMMERY OF THE UTILITY MODEL
To the deficiency that prior art exists, the utility model aims to provide a tubular furnace flue gas is coke oven processing system of recycling in coordination improves the flue gas utilization, and the centralized processing flue gas need not to set up flue gas processing system alone, reduce cost.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a tubular furnace flue gas and coke oven cooperative recycling treatment system comprises a tubular furnace, wherein the tubular furnace comprises a furnace body and a chimney, the top of the furnace body is provided with a side exhaust pipe opening, the side exhaust pipe opening is connected with a flue gas valve, the flue gas valve is connected with an air draft pipeline, the air draft pipeline is connected with a coke oven unit, the coke oven unit comprises a coke oven and a circulating fan with a cooler, the air outlet of the circulating fan is communicated with the bottom of the coke oven, and the air inlet of the circulating fan is communicated with the top of the coke oven; an air outlet branch of the circulating fan is connected with a sulfur and nitrate balance calandria, and the sulfur and nitrate balance calandria is sequentially connected with a desulfurization unit and a denitrification unit; the induced draft pipeline comprises a coke receiving pipe and a machine receiving pipe, the coke receiving pipe is communicated with the interior of the coke oven, and the machine receiving pipe is connected with an air inlet of the circulating fan.
By adopting the technical scheme, the smoke generated in the tubular furnace is not directly discharged from the chimney, the smoke flows to the coke oven through the air introduction pipeline and is used as the circulating supplement of inert gas in the coking process of the coke oven, the smoke with the oxygen content after combustion is recycled, the smoke is divided into two paths to be connected into the airflow circulation between the circulating fan and the coke oven, one path is connected to the air inlet of the circulating fan, the other path is directly connected into the coke oven, the smoke is discharged from the sulfur and nitrate balance exhaust pipe after the gas in the coke oven is mixed and the sulfur content of the gas in the coke oven is diluted, and the smoke can be adjusted and reduced in the circulation ratio of the circulating fan to the airflow due to the increase of the air intake of the coke oven as a whole, the extraction of sulfur-containing substances and nitrate-containing.
Dust removal, desulfurization, denitration processing are carried out at desulfurization unit and denitration unit in unison at the end, improve the flue gas utilization from this, centralized processing flue gas need not to set up flue gas processing system alone, reduce cost.
The utility model discloses further set up to: and a high-temperature induced draft fan for blowing air from the furnace body to the coke oven is arranged on the induced draft pipeline.
By adopting the technical scheme, the high-temperature induced draft fan improves the induced draft efficiency, so that the flue gas in the furnace body actively enters the induced draft pipeline, and the flue gas can be pressed into the coke oven tube.
The utility model discloses further set up to: the high-temperature induced draft fan is linked with the flue gas valve and the circulating fan, and when the flue gas valve is opened and the circulating fan is started, the high-temperature induced draft fan is started.
By adopting the technical scheme, the problem that a high-temperature induced draft fan introduces smoke into the coke oven when the coke oven does not work to cause working faults and even safety accidents is avoided, and the safety of the system is improved.
The utility model discloses further set up to: the machine connecting pipe is provided with a cooling heat exchanger, a cooling medium flows in the cooling heat exchanger, and the flue gas in the machine connecting pipe is a heat medium of the cooling heat exchanger.
By adopting the technical scheme, the flue gas waste heat in the heat exchanger pipe is recovered, the load of a cooler carried by the circulating fan is reduced, and the heat values of different temperatures are recovered in a grading manner, so that the heat values are reasonably allocated and reused.
The utility model discloses further set up to: the machine-connecting pipe is provided with a machine-connecting pressure regulating valve which controls the downstream smoke pressure; the coke receiving pipe is provided with a coke receiving pressure regulating valve, the coke receiving pressure regulating valve controls the downstream smoke pressure to be larger than the downstream smoke pressure controlled by the coke receiving pressure regulating valve, and the difference value is 15-40 Pa.
By adopting the technical scheme, the pressure of one side of the coke oven connected with the coke receiving pipe, the inside of the coke oven and the air outlet of the circulating fan is balanced, the pressure of one side of the coke oven connected with the coke receiving pipe is ensured to be greater than the pressure of the inside of the coke oven, and the stable conveying of the smoke in the coke receiving pipe into the coke oven is ensured.
The utility model discloses further set up to: the chimney is characterized in that a flue gas channel is arranged in the chimney, a flue gas baffle for opening and closing the flue gas channel is arranged in the flue gas channel, and the flue gas baffle is remotely controlled.
Through adopting above-mentioned technical scheme, when equipment trouble or the internal no flue gas of furnace or flue gas content are low, can open the flue gas baffle to inside and outside the flue gas passageway connection furnace body, be convenient for induced air pipeline block up or production trouble down induced air pipeline discharge when closing to the flue gas spare reply, and be convenient for the production maintenance before the blast air exhaust.
The utility model discloses further set up to: still install ultraviolet flame monitor and atmospheric pressure detector in the furnace body, there is or not flame signal in the ultraviolet flame monitor detects the furnace body, atmospheric pressure detector detects furnace body internal pressure, the equal signal connection ultraviolet flame monitor of flue gas baffle, atmospheric pressure detector and high temperature draught fan signal connection, high temperature draught fan start, the internal gauge pressure of furnace is less than-20 to-10 Pa, just the ultraviolet flame monitor detects and has flame signal, then flue gas channel is closed to the flue gas baffle.
The utility model discloses further set up to: and when the high-temperature induced draft fan is turned off or the ultraviolet flame monitor detects that a flame signal is generated, the smoke baffle opens the smoke channel.
The utility model discloses further set up to: the pressure detector detects that the gauge pressure in the furnace body is greater than 0Pa, and the smoke baffle plate delays to open the smoke channel.
Through adopting above-mentioned technical scheme, by the signal that ultraviolet flame monitor, atmospheric pressure detector detected and high temperature draught fan signal control flue gas baffle open and close flue gas passageway, the more accurate flue gas baffle of controlling is opened, prevents that the flue gas from discharging from flue gas pipeline under the unmanned subjective wish, reduces the possibility that the production accident appears.
To sum up, the utility model discloses following beneficial effect has:
1 flue gas generated in the tubular furnace is not directly discharged from a chimney, flows to a coke oven through an induced air pipeline and is used for circularly supplementing inert gas in the coking process of the coke oven, the flue gas with oxygen content after combustion is recycled, the flue gas is divided into two parts to be connected into airflow between a circulating fan and the coke oven for circulation, one part is connected to an air inlet of the circulating fan, the other part is directly connected into the coke oven, the flue gas is discharged from a sulfur and nitrate balance calandria after the gas in the coke oven is mixed and the sulfur content of the gas in the coke oven is diluted, the circulation ratio of the circulating fan to the airflow can be adjusted and reduced due to the increase of the air intake of the coke oven as a whole, the extraction of sulfur-containing substances and nitrate-containing substances in the coke oven is accelerated, the sulfur and nitrate contents in the coke oven gas are reduced, and finally, dust removal, desulfurization and denitration treatment are carried out on a desulfurization unit, the cost is reduced;
2. when no flue gas or flue gas content are low in equipment failure or the furnace body, can open the flue gas baffle, with inside and outside the flue gas passageway connection furnace body, be convenient for induced air pipeline blocks up or induced air pipeline discharges the reply to flue gas spare when closing under the production trouble, and be convenient for the blast air exhaust before the production maintenance, and by ultraviolet flame monitor, the signal that the atmospheric pressure detector detected and high temperature induced air fan signal control flue gas baffle open and close flue gas passageway, the flue gas baffle is opened in more accurate control, prevent that the flue gas from discharging from the flue gas pipeline under the unmanned subjective intention, reduce the possibility that the production accident appears.
Drawings
FIG. 1 is a schematic view of a system for treating the flue gas of a tube furnace in cooperation with a coke oven.
Reference numerals: 1. a tube furnace; 11. a furnace body; 111. a gas combustion pipe; 112. an ignition device; 113. an ultraviolet flame monitor; 114. an air pressure detector; 12. a chimney; 121. a flue gas channel; 122. a flue gas baffle; 13. side discharge pipe orifices; 14. a flue gas valve; 2. a coke oven unit; 21. a coke oven; 22. a circulating fan; 23. a cooler; 3. a desulfurization unit; 4. a dust removal unit; 5. a denitration unit; 6. an air inducing duct; 61. a high-temperature induced draft fan; 62. a coke receiving pipe; 621. a coke receiving pressure regulating valve; 63. connecting a machine pipe; 631. cooling the heat exchanger; 632. the pressure regulating valve of the aircraft is connected; 7. and (4) a sulfur and nitrate balance calandria.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a tubular furnace flue gas is in coordination with a coke oven and is recycled and processed system, which comprises a tubular furnace 1, a coke oven unit 2, a desulfurization unit 3, a dust removal unit 4 and a denitration unit 5, wherein the coke oven unit 2 comprises a coke oven 21, a circulating fan 22 and a cooler 23, the coke oven 21, the circulating fan 22, the cooler 23, the desulfurization unit 3, the dust removal unit 4 and the denitration unit 5 are in the prior art, the internal structure thereof can be determined according to actual conditions, the prior art is selected, and the system is not a creation point of the utility model, so the system is not further explained below.
The coke oven 21 is connected with the circulating fan 22 through a pipeline, the bottom of the coke oven 21 is connected with an air outlet of the circulating fan 22, the top of the coke oven 21 is connected with an air inlet of the circulating fan 22, and the cooler 23 is arranged between the air outlet of the circulating fan 22 and the bottom of the coke oven 21 and cools the air outlet of the circulating fan 22.
The tube furnace 1 comprises a furnace body 11 and a chimney 12, wherein the bottom of the furnace body 11 is connected with a gas combustion tube 111, and the bottom inside the furnace body 11 is also provided with an ignition device 112 and an ultraviolet flame monitor 113 for igniting gas. An air pressure detector 114 for detecting the air pressure in the furnace body 11 is also installed on the top of the furnace body 11. The ignition device 112, the ultraviolet flame monitor 113 and the atmospheric pressure detector 114 are all of the prior art, wherein the atmospheric pressure detector 114 detects the gauge pressure in the furnace body 11.
Furthermore, a side discharge pipe port 13 is installed on the side surface of the top of the furnace body 11, a flue gas valve 14 is connected to the side discharge pipe port 13, and the flue gas valve 14 is an electric valve or a pneumatic valve according to the actual situation, and the valve is a butterfly valve or a stop valve.
The other end of the flue gas valve 14 is connected with an induced draft pipeline 6, a high-temperature induced draft fan 61 is installed on the induced draft pipeline 6, and the induced draft fan 61 is started and then is conveyed to the downstream from the direction of the furnace body 11.
The branch of the induced draft pipeline 6 is divided into a coke receiving pipe 62 and a coke receiving pipe 63, wherein the coke receiving pipe 62 is communicated with the interior of the coke oven 21, a coke receiving pressure regulating valve 621 is arranged on the coke receiving pipe 62, and the coke receiving pressure regulating valve 621 controls the downstream smoke pressure.
The connecting pipe 63 is connected with an air inlet of the circulating fan 22, and a cooling heat exchanger 631 is mounted on the connecting pipe 63. The cooling heat exchanger 631 flows cold medium, and the flue gas in the connecting pipe 63 is used as the heat medium of the cooling heat exchanger 631 for heat exchange, so that the waste heat of the flue gas in the connecting pipe 63 is recovered, the load of the cooler 23 carried by the circulating fan 22 is reduced, the heat values at different temperatures are recovered in a grading manner, and the reasonable allocation and reutilization of the heat values are facilitated. The machine-connecting pipe 63 is provided with an machine-connecting pressure regulating valve 632 after passing through a cooling heat exchanger 631, the machine-connecting pressure regulating valve 632 controls the downstream flue gas pressure, the coke-connecting pressure regulating valve 621 controls the downstream flue gas pressure to be larger than that of the machine-connecting pressure regulating valve 632, and the difference value is 15-40 Pa.
Meanwhile, the air outlet of the circulating fan 22 is also connected with a sulfur and nitrate balance calandria 7 in a branched manner, and the sulfur and nitrate balance calandria 7 is sequentially connected with the desulfurization unit 3, the dust removal unit 4 and the denitration unit 5.
Moreover, the high-temperature induced draft fan 61 is linked with the flue gas valve 14 and the circulating fan 22, and when the flue gas valve 14 is opened and the circulating fan 22 is started, the high-temperature induced draft fan 61 is started; the high-temperature induced draft fan 61 is interlocked with the ultraviolet flame monitor 113, the on-machine pressure regulating valve 632 and the coking pressure regulating valve 621, and when the ultraviolet flame monitor 113 detects a no-flame signal or the on-machine pressure regulating valve 632 and the coking pressure regulating valve 621 are both closed, the high-temperature induced draft fan 61 stops working.
The flue gas baffles 122 are in signal connection with the ultraviolet flame monitor 113, the pressure sensor and the high-temperature induced draft fan 61. When the warm draught fan is started, the internal pressure of the furnace body 11 is less than minus 20 to minus 10Pa, and the ultraviolet flame monitor 113 detects a signal with flame, the smoke baffle 122 closes the smoke channel 121; when the high-temperature induced draft fan 61 is turned off or the ultraviolet flame monitor 113 detects that a flame signal is provided, the flue gas baffle 122 opens the flue gas channel 121; the pressure sensor detects that the internal pressure of the furnace body 11 is greater than 0Pa, the smoke baffle 122 delays to open the smoke channel 121, and the delay time is 5-15 s.
The utility model discloses a theory of operation:
the flue gas generated in the tubular furnace 1 is not directly discharged from a chimney 12, the flue gas flows to a coke oven 21 through an induced draft pipeline 6 and is used as the circulating supplement of inert gas in the coking process of the coke oven 21, the flue gas with oxygen content after combustion is recycled, the flue gas is divided into two parts to be connected into the airflow circulation between a circulating fan 22 and the coke oven 21, one part is connected to the air inlet of the circulating fan 22, the other part is directly connected into the coke oven 21, the flue gas is mixed with the gas in the coke oven 21 and is discharged from a sulfur and nitrate balance calandria 7 after the sulfur content in the gas in the coke oven 21 is diluted, and the whole intake of the coke oven 21 is increased, so that the circulation ratio of the circulating fan 22 to the airflow can be adjusted and reduced, the extraction of sulfur-containing substances and nitrate-containing substances in the gas.
Dust removal, desulfurization, denitration processing are carried out at desulfurization unit 3 and denitration unit 5 in unison at the end, improve the flue gas utilization from this, concentrate the processing flue gas, need not to set up flue gas processing system alone, reduce cost.
And when equipment trouble or no flue gas or flue gas content are low in furnace 11, can open flue gas baffle 122, connect the furnace 11 inside and outside with flue gas passageway 121, be convenient for induced air pipeline 6 blocks up or induced air pipeline 6 discharges the reply when closing under the production trouble, and be convenient for the blast air exhaust before the production maintenance, and by ultraviolet flame monitor 113, the signal that atmospheric pressure detector 114 detected and high temperature draught fan 61 signal control flue gas baffle 122 open and close flue gas passageway 121, control flue gas baffle 122 to open more accurately, prevent that the flue gas from discharging from the flue gas pipeline under the non-artificial subjective intention, reduce the possibility that the production accident appears.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (9)
1. The tubular furnace flue gas and coke oven synergistic recycling treatment system comprises a tubular furnace (1), wherein the tubular furnace (1) comprises a furnace body (11) and a chimney (12), and is characterized in that a side exhaust pipe port (13) is arranged at the top of the furnace body (11), the side exhaust pipe port (13) is connected with a flue gas valve (14), the flue gas valve (14) is connected with an air draft pipeline (6), the air draft pipeline (6) is connected with a coke oven unit (2), the coke oven unit (2) comprises a coke oven (21) and a circulating fan (22) with a cooler (23), an air outlet of the circulating fan (22) is communicated with the bottom of the coke oven (21), and an air inlet of the circulating fan (22) is communicated with the top of the coke oven (21); an air outlet branch of the circulating fan (22) is connected with a sulfur and nitrate balance calandria (7), and the sulfur and nitrate balance calandria (7) is sequentially connected with a desulfurization unit (3) and a denitration unit (5); the air inducing pipeline (6) comprises a coke receiving pipe (62) and a machine connecting pipe (63), the coke receiving pipe (62) is communicated with the interior of the coke oven (21), and the machine connecting pipe (63) is connected with an air inlet of the circulating fan (22).
2. The system for recycling and processing the flue gas of the tubular furnace in cooperation with the coke oven as claimed in claim 1, wherein a high-temperature induced draft fan (61) for blowing air from the oven body (11) to the coke oven (21) is arranged on the induced draft duct (6).
3. The tubular furnace flue gas cooperative coke oven recycling system as claimed in claim 2, wherein the high temperature induced draft fan (61) is linked with the flue gas valve (14) and the circulating fan (22), and when the flue gas valve (14) is opened and the circulating fan (22) is started, the high temperature induced draft fan (61) is started.
4. The system for recycling and processing flue gas of a tubular furnace in cooperation with a coke oven according to claim 1, wherein a cooling heat exchanger (631) is arranged on the connector pipe (63), a cooling medium flows in the cooling heat exchanger (631), and flue gas in the connector pipe (63) is a heating medium for cooling the heat exchanger (631).
5. The system for recycling and processing flue gas of a tubular furnace in cooperation with a coke oven according to claim 1, wherein an on-machine pressure regulating valve (632) is arranged on the on-machine pipe (63), and the on-machine pressure regulating valve (632) controls the downstream flue gas pressure; the coke receiving pipe (62) is provided with a coke receiving pressure regulating valve (621), the coke receiving pressure regulating valve (621) controls the downstream smoke pressure to be larger than the coke receiving pressure regulating valve (632) controls the downstream smoke pressure, and the difference value is 15-40 Pa.
6. The system for recycling and processing the flue gas of the tubular furnace in cooperation with the coke oven as claimed in claim 2, wherein a flue gas channel (121) is arranged in the chimney (12), a flue gas baffle (122) for opening and closing the flue gas channel (121) is arranged in the flue gas channel (121), and the flue gas baffle (122) is remotely controlled.
7. The system for recycling the flue gas of the tubular furnace in cooperation with the coke oven as claimed in claim 6, wherein an ultraviolet flame monitor (113) and a pressure detector (114) are further installed in the oven body (11), the ultraviolet flame monitor (113) detects whether a flame signal exists in the oven body (11), the pressure detector (114) detects the pressure in the oven body (11), the flue gas baffles (122) are all in signal connection with the ultraviolet flame monitor (113), the pressure detector (114) and the high-temperature induced draft fan (61), the high-temperature induced draft fan (61) is started, the internal pressure of the oven body (11) is less than-20 to-10 Pa, and the ultraviolet flame monitor (113) detects that a flame signal exists, so that the flue gas baffles (122) close the flue gas channel (121).
8. The system for recycling and processing flue gas of a tubular furnace in cooperation with a coke oven as claimed in claim 7, wherein the flue gas channel (121) is opened by the flue gas baffle (122) when the high-temperature induced draft fan (61) is turned off or the ultraviolet flame monitor (113) detects a flame signal.
9. The system of claim 7, wherein the pressure detector (114) detects that the internal pressure of the oven body (11) is greater than 0Pa, and the flue gas damper (122) delays opening of the flue gas channel (121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921474214.7U CN210613338U (en) | 2019-09-05 | 2019-09-05 | Tubular furnace flue gas is in coordination with coke oven and is recycled processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921474214.7U CN210613338U (en) | 2019-09-05 | 2019-09-05 | Tubular furnace flue gas is in coordination with coke oven and is recycled processing system |
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| Publication Number | Publication Date |
|---|---|
| CN210613338U true CN210613338U (en) | 2020-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921474214.7U Active CN210613338U (en) | 2019-09-05 | 2019-09-05 | Tubular furnace flue gas is in coordination with coke oven and is recycled processing system |
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|---|---|
| CN (1) | CN210613338U (en) |
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- 2019-09-05 CN CN201921474214.7U patent/CN210613338U/en active Active
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