CN215138472U - Dry quenching coke oven flue gas desulfurization discharging equipment - Google Patents
Dry quenching coke oven flue gas desulfurization discharging equipment Download PDFInfo
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- CN215138472U CN215138472U CN202120607451.7U CN202120607451U CN215138472U CN 215138472 U CN215138472 U CN 215138472U CN 202120607451 U CN202120607451 U CN 202120607451U CN 215138472 U CN215138472 U CN 215138472U
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Abstract
The utility model discloses a flue gas desulfurization and discharge device of a dry quenching coke oven, which comprises a support frame, wherein a dust remover, a desulfurization tower, a denitration reactor and a waste heat boiler are respectively fixed on the support frame; the dust remover comprises a dust remover body, a dry quenching tail gas pipe, a dust removal fan, a first discharger and a first slag discharging pipe, wherein the dry quenching tail gas pipe is tangentially fixed with the dust remover body; the desulfurizing tower comprises a desulfurizing tower body, a coke oven flue gas pipe, a first connecting pipe, a spray pipe, a lift pump, a filling layer, a demister and a waste water pipe, wherein the coke oven flue gas pipe is communicated with one side of the desulfurizing tower body. The utility model discloses, possess the desulfurization efficiently, the effectual advantage of desulfurization has solved the problem of proposing in the background art.
Description
Technical Field
The utility model relates to the technical field of coke oven flue gas treatment, in particular to a flue gas desulfurization and discharge device of a dry quenching coke oven.
Background
With the enhancement of the national environmental protection policy, a sulfur dioxide and particulate matter online monitoring system is installed on a chimney of a two-stage environmental dust removal station of a coke dry quenching workshop, in order to reach relevant emission standards (regional atmospheric pollutant comprehensive emission standard DB 37/2376-2013, the concentration of sulfur dioxide needs to be controlled below 100mg/m for cultivation), ammonia water is sprayed to the chimney to reduce the sulfur dioxide in flue gas in the early stage, the concentration of the sulfur dioxide in flue gas can be controlled to be lower than 100mg/m for cultivation, but the operation is unstable, and the national emission requirements are difficult to meet when coke growth and load are higher. With the publication of the regional integrated atmospheric pollutants discharge standard DB 37/2376-2019, the concentration of sulfur dioxide needs to be controlled below 50mg/m high speed cultivation, and the standard discharge is difficult to realize by the existing measures.
Disclosure of Invention
An object of the utility model is to provide a dry coke quenching coke oven flue gas desulfurization discharging equipment possesses the desulfurization efficiency height, and the effectual advantage of desulfurization has solved the problem of proposing among the background art.
In order to achieve the above object, the utility model provides a following technical scheme: a flue gas desulfurization and discharge device of a dry quenching coke oven comprises a support frame, wherein a dust remover, a desulfurization tower, a denitration reactor and a waste heat boiler are respectively fixed on the support frame;
the dust remover comprises a dust remover body, a dry quenching tail gas pipe, a dust removal fan, a first discharger and a first slag discharging pipe, wherein the dry quenching tail gas pipe is tangentially fixed with the dust remover body;
the desulfurization tower comprises a desulfurization tower body, a coke oven flue gas pipe, a first connecting pipe, a spray pipe, a lift pump, a filling layer, a demister and a wastewater pipe, wherein the coke oven flue gas pipe is communicated with one side of the desulfurization tower body, the lower end of the first connecting pipe is communicated with an air outlet of a dust removal fan, the upper end of the first connecting pipe is communicated with the coke oven flue gas pipe, the spray pipe is fixed inside the desulfurization tower body, one end of the spray pipe penetrates through the side surface of the desulfurization tower body and is communicated with the lift pump, the filling layer is fixed inside the desulfurization tower body and is positioned below the spray pipe, the demister is fixed inside the desulfurization tower body and is positioned above the spray pipe, and the wastewater pipe is communicated with the bottom of the desulfurization tower body;
the denitration reactor comprises a denitration reactor body, a catalyst layer, a blower, a second connecting pipe, a second slag discharging pipe, a second discharger and a third slag discharging pipe, wherein the catalyst layer is fixed inside the denitration reactor body, the blower is fixed at the top of the denitration reactor, the lower end of the second connecting pipe is communicated with the top of the desulfurization tower body, the upper end of the second connecting pipe is communicated with the denitration reactor body, the second slag discharging pipe is fixed at one side of the desulfurization tower body, the second discharger is fixed at the bottom of the desulfurization tower body, the third slag discharging pipe is communicated with the second discharger, and the third slag discharging pipe is also communicated with the first slag discharging pipe;
the waste heat boiler comprises a boiler body, a water tank, a heat exchange element, a third connecting pipe and an induced draft fan, wherein the water tank is fixed to the top of the boiler body, the heat exchange element penetrates through and is fixed between the boiler body and the water tank, one end of the third connecting pipe is communicated with the denitration reactor body, the other end of the third connecting pipe is communicated with the boiler body, and an air inlet of the induced draft fan is communicated with the boiler body.
Preferably, the first discharger and the second discharger are both star-shaped dischargers.
Preferably, the blower includes a gas tank, a pulse solenoid valve, and a rake pipe, the gas tank is fixed on the top of the denitration reactor body, the pulse solenoid valve is connected to the gas tank, and the rake pipe is fixed inside the denitration reactor body, is arranged above the catalyst layer, and is connected to the pulse solenoid valve.
Preferably, the demister is a baffle demister.
Preferably, the filling layer is a copper ball.
Preferably, the heat exchange elements are tubes.
Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model discloses, merge 140t/h and 190t/h dry quenching tail gas, carry out the desulfurization through newly-built desulfurizing tower, it falls the particulate matter to below 10 mg/Nm 3 to arrange the dust remover before the desulfurizing tower, for guaranteeing desulfurization efficiency, need guarantee that newly-improved desulfurizing tower entry temperature is not less than 120 ℃, because of dry quenching tail gas temperature itself is lower (about 130 ℃ near the diffusion valve), again after dust removal and a series of pipelines, the temperature reduces to some extent, the event needs to draw one coke oven flue gas and dry quenching tail gas to carry out the direct mixing and heaies up, get into the desulfurization in the desulfurizing tower, control sulfur dioxide concentration is below 50mg/m mankind of coal, then flue gas after the dust removal desulfurization passes through denitration reactor denitration, after exhaust-heat boiler heat transfer at last, arrange to the atmosphere, it is efficient to possess the desulfurization, the effectual advantage of desulfurization.
Drawings
FIG. 1 is a front view of the support frame of the present invention;
FIG. 2 is a pipeline connection diagram of the present invention with the support frame removed;
FIG. 3 is a cross-sectional view of the dust collector of the present invention;
FIG. 4 is a cross-sectional view of the desulfurizing tower of the present invention;
fig. 5 is a sectional view of the denitration reactor of the present invention;
fig. 6 is a sectional view of the waste heat boiler of the present invention.
In the figure: 1. a support frame; 2. a dust remover; 21. a dust collector body; 22. dry quenching a tail gas pipe; 23. a dust removal fan; 24. a first discharger; 25. a first slag outlet pipe; 3. a desulfurizing tower; 31. a desulfurizing tower body; 32. a coke oven flue gas pipe; 33. a first connecting pipe; 34. a shower pipe; 35. a lift pump; 36. a filling layer; 37. a demister; 38. a waste pipe; 5. a denitration reactor; 51. a denitrification reactor body; 52. a catalytic layer; 53. a blower; 531. a gas tank; 532. a pulse electromagnetic valve; 533. harrowing a pipe; 54. a second connecting pipe; 55. a second slag outlet pipe; 56. a second discharger; 57. a third slag outlet pipe; 6. a waste heat boiler; 61. a boiler body; 62. a water tank; 63. a heat exchange element; 64. a third connecting pipe; 65. an induced draft fan.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 6, the present invention provides a technical solution: a dry quenching coke oven flue gas desulfurization discharging device comprises a support frame 1, wherein a dust remover 2, a desulfurization tower 3, a denitration reactor 5 and a waste heat boiler 6 are respectively fixed on the support frame 1;
the dust remover 2 comprises a dust remover body 21, a dry quenching tail gas pipe 22, a dust removing fan 23, a first discharger 24 and a first slag discharging pipe 25, wherein the dry quenching tail gas pipe 22 is tangentially fixed with the dust remover body 21, the dust removing fan 23 is fixed at the top of the dust remover body 21, the first discharger 24 is fixed at the bottom of the dust remover body 21, the first discharger 24 is a star-shaped discharger, and the first slag discharging pipe 25 is communicated with the first discharger 24; after the dry quenching tail gas is centrifugally dedusted by the deduster 2, the particulate matters are reduced to below 10 mg/Nm 3, and the particulate matters are settled in the first discharger 24 for discharging.
The desulfurizing tower 3 comprises a desulfurizing tower body 31, a coke oven flue gas pipe 32, a first connecting pipe 33, a spray pipe 34, a lift pump 35, a filling layer 36, a demister 37 and a waste water pipe 38, wherein the coke oven flue gas pipe 32 is communicated with one side of the desulfurizing tower body 31, the lower end of the first connecting pipe 33 is communicated with an air outlet of a dust removal fan 23, and the upper end of the first connecting pipe 33 is communicated with the coke oven flue gas pipe 32, so that in order to ensure the desulfurizing efficiency, the inlet temperature of a newly-installed desulfurizing tower is required to be not lower than 120 ℃, and because the temperature of the dry quenching tail gas is low (about 130 ℃ near a diffusion valve), the temperature is reduced after dust removal and a series of pipelines, and therefore, one strand of coke oven flue gas and the dry quenching tail gas are required to be directly mixed and heated; the spray pipe 34 is fixed inside the desulfurization tower body 31, one end of the spray pipe 34 penetrates through the side face of the desulfurization tower body 31 and is communicated with the lift pump 35, and the spray pipe is used for adsorbing particulate matters and further removing dust, the filling layer 36 is fixed inside the desulfurization tower body 31 and is positioned below the spray pipe 34, the filling layer 36 is a copper ball, so that the contact area and time of gas and desulfurization washing water are increased, and the desulfurization effect is improved; the demister 37 is fixed inside the desulfurizing tower body 31 and is positioned above the spray pipe 34, and the demister 37 is a baffle demister 37 for removing mist and liquid drops; the waste water pipe 38 is connected to the bottom of the desulfurizing tower body 31 to drain the waste desulfurization washing water.
The denitration reactor 5 comprises a denitration reactor body 51, a catalytic layer 52, a sprayer 53, a second connecting pipe 54, a second slag discharging pipe 55, a second discharger 56 and a third slag discharging pipe 57, wherein the catalytic layer 52 is fixed inside the denitration reactor body 51 and can be continuously provided with multiple layers, the catalytic layer 52 is a denitration catalyst, and the sprayer 53 is fixed on the top of the denitration reactor 5 and blows away impurities blocked on the catalytic layer 52; the lower end of the second connecting pipe 54 is communicated with the top of the desulfurization tower body 31, the upper end of the second connecting pipe 54 is communicated with the denitration reactor body 51, the second slag discharging pipe 55 is fixed on one side of the desulfurization tower body 31, blown impurities enter the second slag discharging pipe 55 and then sink to the position of a second discharger 56, the second discharger 56 is fixed at the bottom of the desulfurization tower body 31, and the second discharger 56 is a star-shaped discharger and discharges the impurities; the third slag tapping pipe 57 opens into the second discharger 56, and the third slag tapping pipe 57 also opens into the first slag tapping pipe 25.
The blowing device 53 comprises an air tank 531, a pulse electromagnetic valve 532 and a rake pipe 533, wherein the air tank 531 is fixed on the top of the denitration reactor body 51, the pulse electromagnetic valve 532 is communicated with the air tank 531, the rake pipe 533 is fixed in the denitration reactor body 51 and is correspondingly arranged above the catalytic layer 52 and is also communicated with the pulse electromagnetic valve 532, impurities intercepted on the catalytic layer 52 are blown away through the blowing device 53, and the efficient use of the catalytic layer 52 is guaranteed.
The exhaust-heat boiler 6 includes boiler body 61, water tank 62, heat transfer element 63, third connecting pipe 64, draught fan 65, the top at boiler body 61 is fixed to water tank 62, heat transfer element 63 runs through and fixes between boiler body 61 and water tank 62, heat transfer element 63 is the tubulation, the one end and the switch-on of denitration reactor body 51 of third connecting pipe 64, the other end and the switch-on of boiler body 61 of third connecting pipe 64, the air intake and the switch-on of boiler body 61 of draught fan 65, recycle through the heat transfer of exhaust-heat boiler 6.
The working principle is as follows: when the dry quenching coke oven flue gas desulfurization discharge device is used, 140t/h and 190t/h dry quenching tail gas are combined and enter through the coke oven flue gas pipe 32, the particulate matter is reduced to be below 10 mg/Nm 3 through the dust remover 2, the dedusted impurities are discharged into the first slag discharging pipe 25 through the first discharger 24, then are combined with the coke oven flue gas discharged from the coke oven flue gas pipe 32 for heating, the coke oven flue gas enters the desulfurizing tower 3 for desulfurization, the sulfur dioxide concentration is controlled to be below 50mg/m during the process of grinding, the wastewater is discharged through the wastewater pipe 38, then the dedusted and desulfurized flue gas is denitrated through the denitration reactor 5, finally the flue gas is discharged into the atmosphere after heat exchange of the waste heat boiler 6, after a period of use, the intercepted impurities are arranged on the surface of the catalysis layer 52, the impurities are blown into the second slag discharging pipe 55 through the sprayer 53 and then fall into the second discharger 56 for discharging, and finally discharged through a third tapping pipe 57.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a dry quenching coke oven flue gas desulfurization discharging equipment, includes support frame (1), its characterized in that: a dust remover (2), a desulfurizing tower (3), a denitration reactor (5) and a waste heat boiler (6) are respectively fixed on the support frame (1);
the dust remover (2) comprises a dust remover body (21), a dry quenching tail gas pipe (22), a dust removing fan (23), a first discharger (24) and a first slag discharging pipe (25), wherein the dry quenching tail gas pipe (22) is tangentially fixed with the dust remover body (21), the dust removing fan (23) is fixed at the top of the dust remover body (21), the first discharger (24) is fixed at the bottom of the dust remover body (21), and the first slag discharging pipe (25) is communicated with the first discharger (24);
the desulfurizing tower (3) comprises a desulfurizing tower body (31), a coke oven flue gas pipe (32), a first connecting pipe (33), a spray pipe (34), a lift pump (35), a filling layer (36), a demister (37) and a wastewater pipe (38), wherein the coke oven flue gas pipe (32) is communicated with one side of the desulfurizing tower body (31), the lower end of the first connecting pipe (33) is communicated with an air outlet of a dust removing fan (23), the upper end of the first connecting pipe (33) is communicated with the coke oven flue gas pipe (32), the spray pipe (34) is fixed in the desulfurizing tower body (31), one end of the spray pipe (34) penetrates through the side surface of the desulfurizing tower body (31) and is communicated with the lift pump (35), the filling layer (36) is fixed in the desulfurizing tower body (31) and is positioned below the spray pipe (34), the demister (37) is fixed inside the desulfurization tower body (31) and is positioned above the spray pipe (34), and the waste water pipe (38) is communicated with the bottom of the desulfurization tower body (31);
the denitration reactor (5) comprises a denitration reactor body (51), a catalyst layer (52), a blowing device (53), a second connecting pipe (54), a second slag discharging pipe (55), a second discharger (56) and a third slag discharging pipe (57), the catalyst layer (52) is fixed inside the denitration reactor body (51), the blowing device (53) is fixed at the top of the denitration reactor (5), the lower end of the second connecting pipe (54) is communicated with the top of the desulfurization tower body (31), the upper end of the second connecting pipe (54) is communicated with the denitration reactor body (51), the second slag discharging pipe (55) is fixed at one side of the desulfurization tower body (31), the second discharger (56) is fixed at the bottom of the desulfurization tower body (31), and the third slag discharging pipe (57) is communicated with the second discharger (56), and the third tapping pipe (57) is also connected to the first tapping pipe (25);
exhaust-heat boiler (6) include boiler body (61), water pitcher (62), heat transfer element (63), third connecting pipe (64), draught fan (65), water pitcher (62) are fixed the top of boiler body (61), heat transfer element (63) run through and fix boiler body (61) with between water pitcher (62), the one end of third connecting pipe (64) with denitration reactor body (51) switch-on, the other end of third connecting pipe (64) with boiler body (61) switch-on, the air intake of draught fan (65) with boiler body (61) switch-on.
2. The dry quenching coke oven flue gas desulfurization discharging device of claim 1, characterized in that: the first discharger (24) and the second discharger (56) are both star-shaped dischargers.
3. The dry quenching coke oven flue gas desulfurization discharging device of claim 1, characterized in that: the sprayer (53) comprises an air tank (531), a pulse electromagnetic valve (532) and a rake pipe (533), wherein the air tank (531) is fixed at the top of the denitration reactor body (51), the pulse electromagnetic valve (532) is communicated with the air tank (531), and the rake pipe (533) is fixed in the denitration reactor body (51), corresponds to the upper part of the catalytic layer (52), and is also communicated with the pulse electromagnetic valve (532).
4. The dry quenching coke oven flue gas desulfurization discharging device of claim 1, characterized in that: the demister (37) is a baffle demister (37).
5. The dry quenching coke oven flue gas desulfurization discharging device of claim 1, characterized in that: the filling layer (36) is a copper ball.
6. The dry quenching coke oven flue gas desulfurization discharging device of claim 1, characterized in that: the heat exchange elements (63) are tubes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120607451.7U CN215138472U (en) | 2021-03-25 | 2021-03-25 | Dry quenching coke oven flue gas desulfurization discharging equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120607451.7U CN215138472U (en) | 2021-03-25 | 2021-03-25 | Dry quenching coke oven flue gas desulfurization discharging equipment |
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| CN215138472U true CN215138472U (en) | 2021-12-14 |
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| CN202120607451.7U Active CN215138472U (en) | 2021-03-25 | 2021-03-25 | Dry quenching coke oven flue gas desulfurization discharging equipment |
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