CN104324602A - Device and process for controlling dust exhaust gas pollution source - Google Patents
Device and process for controlling dust exhaust gas pollution source Download PDFInfo
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- CN104324602A CN104324602A CN201410589187.3A CN201410589187A CN104324602A CN 104324602 A CN104324602 A CN 104324602A CN 201410589187 A CN201410589187 A CN 201410589187A CN 104324602 A CN104324602 A CN 104324602A
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Abstract
The invention relates to a device and process for controlling a dust exhaust gas pollution source. The device for controlling the dust exhaust gas pollution source is characterized by being of a cover structure and being composed of a high-temperature dust exhaust gas collecting chamber, a pollution source control chamber, a dust exhaust gas negative-pressure drainage section, a desulfurization system, a framework and a fixed connecting piece. The process for controlling the dust exhaust gas pollution source comprises the following steps that the device for controlling the dust exhaust gas pollution source is under a working condition that the positive pressure is gradually weakened and the negative pressure is gradually enhanced during working; in the high-temperature dust exhaust gas collecting chamber, rising buoyancy driving plays a leading role, supported by negative-pressure guiding driving; magnesium sulfite and magnesium sulfate both containing crystal water are generated by virtue of an oxidization side reaction. The device and the process for controlling the dust exhaust gas pollution source are capable of reducing the temperature of the high-temperature dust exhaust gas, removing acidic components such as low-concentration SO2 in the dust exhaust gas, removing large-particle dust in the dust exhaust gas, and realizing effective control on pollutants such as solid or liquid particles; the desulfurization efficiency is greater than or equal to 95 percent and the dust removal efficiency is greater than or equal to 90 percent.
Description
Technical field
The invention belongs to environmental protection technical field, is a kind of fume and exhaust gas purifying technology of prevention and control of air pollution, relates to one and utilizes pollution source apportionment room, can remove low concentration SO contained in smoke exhaust simultaneously
2deng acidic components and the pollutant such as bulky grain solid or liquid particle, particularly a kind of smoke exhaust pollution source apportionment device and process.
Background technology
Fume and exhaust gas purifying system, primarily of compositions such as partial exhaust gas cover, purifier, pipe-line system and ventilation blowers, is at present to the main of smoke exhaust Environmental capacity and effective means.Partial exhaust gas cover is a kind of pollution source apportionment device, smoke exhaust pollution source apportionment device of the present invention is the upgrading device of traditional partial exhaust gas cover, device is taken dirt air-flow by utilizing new and high technology effectively to control and weakens its dirt intensity, while avoiding the Pollutants Diffusion such as solid (or liquid) particle, make the effective economical operation of fume and exhaust gas purifying system.Coke oven is the capital equipment of coking industry coking process, because iron-smelting process in nearly decades based on blast furnace process, will will continue so coking is produced.For the pollution sources in coke side region, mainly result from coke oven coking process.The coal loading coke furnace carbonization chamber is smelt the red defocused of red heat through high-temperature retorting, released from carbonization chamber in order by pusher machine, red Jiao released is broken and is burnt in atmosphere and fall quenching compartment (burnt tank) inner impact from leading burnt grid, fall three, quenching compartment (burnt tank) coke pushing link at the fire door place of coking process, coke guide grid of coke guide and coke from coke guide grid of coke guide and produce volume of smoke waste gas, the smoke exhaust quantity that red caustic per ton is sent out reaches more than 0.4kg.Pollution sources have: smoke exhaust temperature is high, intermittently, paroxysmal and product dirt pits along coke oven longitudinal to the frequent feature such as mobile, mainly in waste gas (be about 100mg/m containing burnt dirt (particle) and low concentration
3) SO
2the pollutants such as gas.To the pollution source apportionment of coking process three coke pushing links, external normal employing fixes partial exhaust gas cover and mobile local hood two class hood trapping smoke exhaust.Wherein, fixing partial exhaust gas cover is relative fixing with other part of fume and exhaust gas purifying system, hood covers coke guide grid of coke guide outlet and carriage of coke quenching car (burnt tank) mouth, and whole fume and exhaust gas purifying system is arranged on coke guide or is arranged on traveling equipment that same coke guide travels shoulder to shoulder; Other part of mobile local hood and fume and exhaust gas purifying system is not fixed, hood covers coke guide grid of coke guide outlet and carriage of coke quenching car (burnt tank) mouth, hood is fixed on coke guide and moves with coke guide, the control of dust gathering tube mobile link of hood outlet connecting pipe and pipe-line system, other part of fume and exhaust gas purifying system fixes on the ground.Pollution source apportionment mechanism is: from partial exhaust gas cover inner sucking-off high-temperature smoke waste gas, makes innerly to carry and induced draft and the zone of positive pressure that occurs becomes negative pressuren zone because of material, controls to take dirt air-flow and extrudes from hood gap.Domestic except the above-mentioned mobile local hood trapping smoke exhaust of normal employing, in addition the pollution sources of coking process three coke pushing links are decomposed into two sub-pollution sources, that is: regard fire door place coke pushing link as pollution sources, coke guide grid of coke guide and coke are fallen two, quenching compartment (burnt tank) coke pushing link from coke guide grid of coke guide and are regarded another pollution sources as.The former adopts fixing partial exhaust gas cover to trap smoke exhaust, and the latter adopts heat buoyancy gas skirt to trap smoke exhaust.The pollution source apportionment mechanism of the two is different, and the former, from partial exhaust gas cover inner sucking-off high-temperature smoke waste gas, controls to take dirt air-flow and extrude from hood gap, and the latter drives trapping smoke exhaust by self rising buoyancy of high-temperature smoke waste gas (instant heating induced draft).Above-mentioned in the control to coking process three coke pushing link pollution sources, do not consider low concentration SO
2deng the control of acidic components, the main control considering focusing dirt (particle).Partial exhaust gas cover, ubiquity is poorly sealed, and especially coke guide grid of coke guide and fire door contact site (particularly bottom) cannot seal completely, cause a part of smoke exhaust to escape; Trapping ability is not enough or uneven, causes some smoke exhaust to escape from the space of partial exhaust gas cover lower edge and carriage of coke quenching car (coke tank truck tank mouth) top edge; Physical dimension and the position design of partial exhaust gas cover are improper, cause the defects such as some smoke exhaust escapes.Strengthen capacity and differ if depended merely on and reach satisfied control effects surely, and be uneconomic to whole fume and exhaust gas purifying system.
Summary of the invention
Instant invention overcomes the defect of above-mentioned existence, object is the pollution sources problem for coke oven coking process three coke pushing links, utilizes pollution source apportionment room, controls smoke exhaust with low energy consumption, little suction air volume, removes low concentration SO contained in smoke exhaust simultaneously
2deng acidic components and the pollutant such as bulky grain solid or liquid particle, realize Control pollution requirement by sealing and structural design, a kind of convenience, economic smoke exhaust pollution source apportionment device and process are provided.
Smoke exhaust pollution source apportionment device of the present invention and process content Description:
Smoke exhaust pollution source apportionment device of the present invention and process, it is characterized in that: smoke exhaust pollution source apportionment device is cover body structure, by: high-temperature smoke exhaust plenum, pollution source apportionment room, smoke exhaust negative pressure drainage section, slurries flusher and slurry spraying device form;
High-temperature smoke exhaust plenum is provided with from bottom to up successively: cube group air horn mouth, cube group air chamber cover body and collection chamber rectangle adpting flange, the space of the lower edge of cube group air horn mouth and the top edge of carriage of coke quenching car coke tank truck tank mouth, covers compartment tank mouth by the lower edge of cube group air horn mouth;
Pollution source apportionment room is provided with from bottom to up successively: control room rectangle adpting flange, rectangle connects short tube, isolation screen cloth, spherical reflecting curtain, control room cone section cover body, control room lower cover, cover body and control room upper outlet body in control room, isolation screen cloth is arranged on the indoor center of pollution source apportionment, isolation screen cloth is the screen cloth of tubular construction, the top of screen cloth is square bottom circular shape, bottom and the control room of screen cloth are bored bottom section cover body and are connected, top is connected with spherical reflecting curtain, pollution source apportionment room is isolated into screen cloth inside and periphery two regions by isolation screen cloth and spherical reflecting curtain, in control room cone section cover body, control room lower cover, control room, cover body is connected from bottom to up successively with control room upper outlet body, and high-temperature smoke exhaust plenum and pollution source apportionment room, be connected with control room rectangle adpting flange by collection chamber rectangle adpting flange,
Smoke exhaust negative pressure drainage section is provided with from right to left successively: rectangle air flow method board component, reducing pipe, rectangle work pipeline section, rectangle straightener(stator) blade assembly and adpting flange; Rectangle air flow method board component is arranged on the inwall of reducing pipe double over, rectangle straightener(stator) blade assembly is arranged on the inwall of rectangle work pipeline section, in the double over of reducing pipe and control room, cover body is connected to cover body upper shed place in control room, is positioned at distributing on trace of smoke exhaust.By being arranged on the Flange joint of adpting flange on the left of smoke exhaust negative pressure drainage section and fume and exhaust gas purifying pipe-line system;
Slurries flusher and slurry spraying device are arranged on above the upper outlet body of control room, are connected by pipeline.
Desulphurization system by: be located at ground desulfurizer slurry prepare subsystem and be located at coke oven top desulfurizer slurry throw in subsystem form, desulfurizer slurry preparation subsystem is provided with successively: desulfurizer powder storehouse, desulphurizing agent slurry formulating device and elevator pump, connected by pipeline; Desulfurizer slurry is thrown in subsystem and is provided with successively: desulfurizer slurry tank, desulfurizer slurry add pump group, slurries spray facility (17) and slurry spraying facility (18), are connected by pipeline; The connecting pipe being located at desulfurizer slurry preparation subsystem is connected with the desulfurizer slurry tank that desulfurizer slurry throws in subsystem, and its technique adopts following steps:
(1), when smoke exhaust pollution source apportionment device works, smoke exhaust pollution source apportionment device is in malleation and weakens the duty that negative pressure strengthens gradually gradually;
(2), in high-temperature smoke exhaust plenum, only have red Jiao to carry to exist with thermal induction air-flow, inside is made to occur malleation, at the fire door place of coking process, coke guide grid of coke guide and coke fall the high-temperature smoke waste gas of the burnt tank in quenching compartment three coke pushing links discharges from coke guide grid of coke guide, guide by the thermal induction air-flow of self and the negative pressure of the driving of rising buoyancy malleation and fume and exhaust gas purifying system and drive, high-temperature smoke waste gas is flow to hemispherical dome shape isolation screen cloth 6 interior zone by driving, flow in hemispherical dome shape isolation screen cloth 6 interior zone process at high-temperature smoke waste gas, based on rising buoyancy driving, negative pressure guides driving to be auxiliary,
(3), in pollution source apportionment room, spray the sprinkling of facility by being located at spherical reflecting curtain outer top place desulfurizer slurry, hemispherical dome shape isolation screen cloth forms desulfurizer slurry water curtain; Desulfurizer slurry water curtain, pollution source apportionment room is isolated into the balanced district of smoke exhaust heat energy and screen cloth interior zone and elementary desulphurization reaction dedusting area and screen cloth neighboring area, flow to the high-temperature smoke waste gas of screen cloth interior zone, due to the stop of spherical reflecting curtain and the expansion of overflow section, its flow velocity and the flow direction all there occurs change, are flowed to screen cloth neighboring area by desulfurizer slurry water curtain;
(4), in elementary desulphurization reaction dedusting area, be provided with desulfurizer slurry atomization facility at upper outlet body inner surface place, control room, desulfurizer slurry is atomized.Smoke exhaust and steam and the desulfurization agent be atomized, obtain good desulfurization, dust removing effects; Meanwhile, due to the washing of steam, the dust bulky grain in smoke exhaust collects to the control room section of cone cover body at pollution source apportionment indoor settlement, finally enters in the burnt tank in quenching compartment; Desulfurizer slurry, selects MgO slurries to carry out SO in washing absorption flue gas
2, the magnesium sulfite and magnesium sulfate that contain the crystallization water is generated by oxidation side reaction;
(5), by absorption SO
2with the oarse-grained fine grained smoke exhaust of removal dust, after discharging from elementary desulphurization reaction dedusting area, enter smoke exhaust negative pressure drainage section, in smoke exhaust negative pressure drainage section, through air flow method and the rectification of air flow method board component and straightener(stator) blade assembly, the smoke exhaust flowed in rectangle work pipeline section, air flow method is even, mid portion air-flow weakens, peripheral portion strengthens, and start to mix with the ambient windstream from flow field drive system, start to mix rear smoke exhaust temperature and start further reduction, the needs meeting the senior desulfurization and dedusting of fume and exhaust gas purifying system subsequent purification device adopt smoke exhaust pollution source apportionment device of the present invention and process, high-temperature smoke EGT can be reduced, remove low concentration SO contained in smoke exhaust
2deng acidic components, remove big dust particle contained in smoke exhaust, achieve and the pollutant such as solid or liquid particle is effectively controlled.Low concentration SO contained in smoke exhaust can be removed
2deng acidic components, desulfuration efficiency about>=95%, removes big dust particle contained in smoke exhaust, efficiency of dust collection about>=90%.
Accompanying drawing explanation
Fig. 1 is smoke exhaust pollution source apportionment apparatus structure schematic diagram;
Fig. 2 is the process chart of smoke exhaust pollution source apportionment desulphurization system;
In figure: 1 is cube group air horn mouth, 2 is cube group air chamber cover bodies, 3 is collection chamber rectangle adpting flanges, 4 is control room rectangle adpting flanges, 5 is that rectangle connects short tube, 6 is isolation screen clothes, 7 is spherical reflecting curtains, 8 is control room cone section cover bodies, 9 is control room lower covers, 10 is cover bodies in control room, 11 is control room upper outlet bodies, 12 is the square air flow method board components of a group leader, 13 is reducing pipes, 14 is rectangle work pipeline sections, 15 is the square straightener(stator) blade assemblies of a group leader, 16 is adpting flanges, 17 is slurries flushers, 18 is slurry spraying devices.
Detailed description of the invention
Smoke exhaust pollution source apportionment device of the present invention and process are achieved in that and illustrate below in conjunction with accompanying drawing.
Smoke exhaust pollution source apportionment device is cover body structure, by: high-temperature smoke exhaust plenum, pollution source apportionment room, smoke exhaust negative pressure drainage section, slurries flusher and slurry spraying device form.
See Fig. 1, high-temperature smoke exhaust plenum is provided with from bottom to up successively: cube group air horn mouth 1, cube group air chamber cover body 2 and collection chamber rectangle adpting flange 3, the space of the lower edge of cube group air horn mouth 1 and the top edge of carriage of coke quenching car coke tank truck tank mouth, minimum and cover compartment tank mouth under the condition of satisfied driving technological requirement by the lower edge of cube group air horn mouth 1.
Pollution source apportionment room is provided with from bottom to up successively: control room rectangle adpting flange 4, rectangle connect cover body 10 and control room upper outlet body 11 in short tube 5, isolation screen cloth 6, spherical reflecting curtain 7, control room cone section cover body 8, control room lower cover 9, control room.Isolation screen cloth 6 is arranged on the indoor center of pollution source apportionment, isolation screen cloth 6 is the screen cloth of tubular construction, the top of screen cloth is square bottom circular shape, bottom and the control room of screen cloth are bored bottom section cover body 8 and are connected, top is connected with spherical reflecting curtain 7, and pollution source apportionment room is isolated into screen cloth inside and periphery two regions by isolation screen cloth 6 and spherical reflecting curtain 7.In control room cone section cover body 8, control room lower cover 9, control room, cover body 10 is connected from bottom to up successively with control room upper outlet body 11.High-temperature smoke exhaust plenum and pollution source apportionment room, be connected with control room rectangle adpting flange 4 by collection chamber rectangle adpting flange 3.
Smoke exhaust negative pressure drainage section is provided with from right to left successively: a group leader square air flow method board component 12, reducing pipe 13, the square straightener(stator) blade assembly 15 of rectangle work pipeline section 14, group leader and adpting flange 16; The square air flow method board component 12 of one group leader is arranged on the inwall of reducing pipe 13 double over, the square straightener(stator) blade assembly 15 of one group leader is arranged on the inwall of rectangle work pipeline section 14, in the double over of reducing pipe 13 and control room, cover body 10 is connected to cover body 10 upper shed place in control room, is positioned at distributing on trace of smoke exhaust.By being arranged on the Flange joint of adpting flange on the left of smoke exhaust negative pressure drainage section 16 and fume and exhaust gas purifying pipe-line system.
Slurries flusher 17 and slurry spraying device 18 are arranged on above control room upper outlet body 11, are connected by pipeline.
See Fig. 2, the technological process of smoke exhaust pollution source apportionment system of the present invention
Desulphurization system, by: the desulfurizer slurry preparation subsystem being located at ground and the desulfurizer slurry being located at coke oven top are thrown in subsystem and are formed, desulfurizer slurry preparation subsystem is provided with successively: desulfurizer powder storehouse, desulphurizing agent slurry formulating device and elevator pump, connected by pipeline; Desulfurizer slurry is thrown in subsystem and is provided with successively: desulfurizer slurry tank, desulfurizer slurry add pump group, slurries spray facility 17 and slurry spraying facility 18, are connected by pipeline; The connecting pipe being located at desulfurizer slurry preparation subsystem is connected with the desulfurizer slurry tank that desulfurizer slurry throws in subsystem.
Its technological process is in the steps below:
(1), when smoke exhaust pollution source apportionment device works, smoke exhaust pollution source apportionment device is in malleation and weakens the duty that negative pressure strengthens gradually gradually.
(2), in high-temperature smoke exhaust plenum, only have red Jiao to carry to exist with thermal induction air-flow, inside is made to occur malleation, at the fire door place of coking process, coke guide grid of coke guide and coke fall the high-temperature smoke waste gas of the burnt tank in quenching compartment three coke pushing links discharges from coke guide grid of coke guide, guide by the thermal induction air-flow of self and the negative pressure of the driving of rising buoyancy malleation and fume and exhaust gas purifying system and drive, high-temperature smoke waste gas is flow to isolation screen cloth interior zone by driving, flow in isolation screen cloth interior zone process at high-temperature smoke waste gas, based on rising buoyancy driving, negative pressure guides driving to be auxiliary.
(3), in pollution source apportionment room, by being located at the sprinkling of the desulfurizer slurry flusher at spherical reflecting curtain outer top place, isolation screen cloth forms desulfurizer slurry water curtain, desulfurizer slurry water curtain, pollution source apportionment room is isolated into the balanced district of smoke exhaust heat energy and screen cloth interior zone and elementary desulphurization reaction dedusting area and screen cloth neighboring area, flow to the high-temperature smoke waste gas of screen cloth interior zone, due to the stop of spherical reflecting curtain and the expansion of overflow section, its flow velocity and the flow direction all there occurs change, flowed to screen cloth neighboring area by desulfurizer slurry water curtain, in the balanced district of smoke exhaust heat energy, high-temperature smoke waste gas self rising buoyancy driving force weakens gradually, and the negative pressure of fume and exhaust gas purifying system guides driving force to strengthen gradually, and smoke exhaust heat energy is tending towards balanced, when high-temperature smoke waste gas is by desulfurizer slurry water curtain, water curtain mainly plays three kinds of function affects, and one is make smoke exhaust from by lowering the temperature desulfurizer slurry water curtain, produces a large amount of steam simultaneously and enters elementary desulphurization reaction dedusting area, two is make low concentration SO contained in smoke exhaust
2remove Deng acidic components beginning, three is make big dust particle etc. contained in smoke exhaust start to remove.
(4), in elementary desulphurization reaction dedusting area, in control room, upper outlet body inner surface place is provided with desulfurizer slurry atomising device, desulfurizer slurry is atomized, smoke exhaust and steam and the desulfurization agent be atomized, there is physics, chemical reaction process, because desulfurizing agent is atomized into 35 ~ 75 microns of superfine little droplets, increase desulfurizing agent and SO
2the specific area of contact, contacts with smoke exhaust and completes SO rapidly
2absorption and purification, obtain good desulfurization, dust removing effects; Meanwhile, due to the washing of steam, the dust bulky grain in smoke exhaust collects to the control room section of cone cover body at pollution source apportionment indoor settlement, finally enters in the burnt tank in quenching compartment; The desulfurizer slurry water curtain that desulfurizer slurry flusher sprays and the pole fine mist that desulfurizer slurry atomising device is atomized, both vaporizations and absorption are carried out simultaneously, and whole process does not produce unnecessary waste water;
Desulfurizer slurry of the present invention, selects MgO slurries to carry out SO in washing absorption flue dust
2, generate and generate by being oxidized side reaction containing the magnesium sulfite of the crystallization water and magnesium sulfate, because the smoke exhaust through reducing temperature also retains certain temperature, part is removed containing the crystallization water in the magnesium sulfite of the crystallization water and magnesium sulfate.
(5), by absorption SO
2with the oarse-grained fine grained smoke exhaust of removal dust, after discharging from elementary desulphurization reaction dedusting area, enter smoke exhaust negative pressure drainage section, in smoke exhaust negative pressure drainage section, through air flow method and the rectification of air flow method board component and straightener(stator) blade assembly, the smoke exhaust flowed in rectangle work pipeline section, air flow method is even, mid portion air-flow weakens, peripheral portion strengthens, and start to mix with the ambient windstream from flow field drive system, start to mix rear smoke exhaust temperature and start further reduction, meet the needs of the senior desulfurization and dedusting of fume and exhaust gas purifying system subsequent purification device.
Key reaction equation involved in the present invention:
MgO ﹢ H
2o → Mg(OH)
2(absorption process)
Mg(OH)
2﹢ SO
2﹢ 5H
2o → Mg SO
36H
2o (absorption process)
Mg SO
36H
2o ﹢ SO
2→ Mg(H SO
3)
2﹢ 5H
2o (absorption process)
Mg(H SO
3)
2﹢ Mg(OH)
2﹢ 10H
2o → 2Mg SO
36H
2o (absorption process)
Mg(H SO
3)
2﹢ 1/2O
2﹢ 6H
2o → Mg SO
47H
2o ﹢ SO
2(absorption process, side reaction)
Mg SO
3﹢ 1/2O
2﹢ 7H
2o → Mg SO
47H
2o (absorption process, side reaction)
Mg(OH)
2﹢ SO
3﹢ 6H
2o → Mg SO
47H
2o (absorption process, side reaction)
Mg SO
36H
2o(heats) → Mg SO
3﹢ 6H
2o ↑ (dry run)
Mg SO
47H
2o(heats) → Mg SO
4﹢ 7H
2o ↑ (dry run)
The invention has the beneficial effects as follows:
1, the desulfurizer slurry water curtain of pollution source apportionment indoor, has three kinds of effects: one is reduce high-temperature smoke EGT, smoke exhaust is lowered the temperature from by during desulfurizer slurry water curtain, produces a large amount of steam simultaneously and enter elementary desulphurization reaction dedusting area; Two is elementary desulphurization reactions, low concentration SO contained in smoke exhaust
2remove Deng acidic components beginning; Three is elementary dedustings, and big dust particle etc. contained in smoke exhaust starts to remove.
2, in the smoke exhaust pollution source apportionment device course of work, from high-temperature smoke exhaust plenum cube group air horn mouth, to elementary desulphurization reaction dedusting area, pollution source apportionment room, high-temperature smoke waste gas completes based on rising buoyancy driving, negative pressure guides driving to be auxiliary, to being auxiliary with rising buoyancy driving, negative pressure guiding driving is the transformation of main duty, this transformation takes full advantage of thermal induction air-flow and the rising buoyancy of high-temperature smoke waste gas self, the negative pressure guiding function of Barotropic kinetic energy and fume and exhaust gas purifying system, with less suction air volume, achieve the control object effective and economic to the pollutant such as solid or liquid particle.
3, desulfurizer slurry of the present invention is MgO slurries, the sprinkling of facility and the atomization of slurry spraying facility is sprayed by slurries, fully and high-temperature smoke exhaust gas contact, there is series of physical, chemical reaction process, smoke exhaust temperature is made to be reduced to 120 ~ 150 DEG C, low concentration SO contained in smoke exhaust
2be removed Deng acidic components, about>=95%, big dust particle etc. contained in smoke exhaust is removed desulfuration efficiency, efficiency of dust collection about>=90%.
Claims (2)
1. a smoke exhaust pollution source apportionment device, it is characterized in that: smoke exhaust pollution source apportionment device is cover body structure, by: high-temperature smoke exhaust plenum, pollution source apportionment room, smoke exhaust negative pressure drainage section, slurries flusher and slurry spraying device form;
High-temperature smoke exhaust plenum is provided with from bottom to up successively: cube group air horn mouth (1), cube group air chamber cover body (2) and collection chamber rectangle adpting flange (3), the space of the lower edge of cube group air horn mouth (1) and the top edge of carriage of coke quenching car coke tank truck tank mouth, covers compartment tank mouth by the lower edge of cube group air horn mouth (1);
Pollution source apportionment room is provided with from bottom to up successively: control room rectangle adpting flange (4), rectangle connects short tube (5), isolation screen cloth (6), spherical reflecting curtain (7), control room cone section cover body (8), control room lower cover (9), cover body (10) and control room upper outlet body (11) in control room, isolation screen cloth (6) is arranged on the indoor center of pollution source apportionment, the screen cloth that isolation screen cloth (6) is tubular construction, the top of screen cloth is square bottom circular shape, bottom and the control room of screen cloth are bored section cover body (8) bottom and are connected, top is connected with spherical reflecting curtain (7), pollution source apportionment room is isolated into screen cloth inside and periphery two regions by isolation screen cloth (6) and spherical reflecting curtain (7), in control room cone section cover body (8), control room lower cover (9), control room, cover body (10) is connected from bottom to up successively with control room upper outlet body (11), high-temperature smoke exhaust plenum and pollution source apportionment room, be connected with control room rectangle adpting flange (4) by collection chamber rectangle adpting flange (3),
Smoke exhaust negative pressure drainage section is provided with from right to left successively: rectangle air flow method board component (12), reducing pipe (13), rectangle work pipeline section (14), rectangle straightener(stator) blade assembly (15) and adpting flange (16); The square air flow method board component (12) of one group leader is arranged on the inwall of reducing pipe (13) double over, rectangle straightener(stator) blade assembly (15) is arranged on the inwall of rectangle work pipeline section (14), in the double over of reducing pipe (13) and control room, cover body (10) is connected to cover body in control room (10) upper shed place, what be positioned at smoke exhaust distributes on trace, by being arranged on the Flange joint of the adpting flange (16) on the left of smoke exhaust negative pressure drainage section and fume and exhaust gas purifying pipe-line system;
Slurries flusher (17) and slurry spraying device (18) are arranged on above control room upper outlet body (11), are connected by pipeline.
2. the process of a smoke exhaust pollution source apportionment system, it is characterized in that: desulphurization system by: be located at ground desulfurizer slurry prepare subsystem and be located at coke oven top desulfurizer slurry throw in subsystem form, desulfurizer slurry preparation subsystem is provided with successively: desulfurizer powder storehouse, desulphurizing agent slurry formulating device and elevator pump, connected by pipeline; Desulfurizer slurry is thrown in subsystem and is provided with successively: desulfurizer slurry tank, desulfurizer slurry add pump group, slurries spray facility (17) and slurry spraying facility (18), are connected by pipeline; The connecting pipe being located at desulfurizer slurry preparation subsystem is connected with the desulfurizer slurry tank that desulfurizer slurry throws in subsystem, and its technique adopts following steps:
(1), when smoke exhaust pollution source apportionment device works, smoke exhaust pollution source apportionment device is in malleation and weakens the duty that negative pressure strengthens gradually gradually;
(2), in high-temperature smoke exhaust plenum, only have red Jiao to carry to exist with thermal induction air-flow, inside is made to occur malleation, at the fire door place of coking process, coke guide grid of coke guide and coke fall the high-temperature smoke waste gas of the burnt tank in quenching compartment three coke pushing links discharges from coke guide grid of coke guide, guide by the thermal induction air-flow of self and the negative pressure of the driving of rising buoyancy malleation and fume and exhaust gas purifying system and drive, high-temperature smoke waste gas is flow to hemispherical dome shape isolation screen cloth (6) interior zone by driving, flow in hemispherical dome shape isolation screen cloth (6) interior zone process at high-temperature smoke waste gas, based on rising buoyancy driving, negative pressure guides driving to be auxiliary,
(3), in pollution source apportionment room, spray the sprinkling of facility by being located at spherical reflecting curtain outer top place desulfurizer slurry, hemispherical dome shape isolation screen cloth forms desulfurizer slurry water curtain; Desulfurizer slurry water curtain, pollution source apportionment room is isolated into the balanced district of smoke exhaust heat energy and screen cloth interior zone and elementary desulphurization reaction dedusting area and screen cloth neighboring area, flow to the high-temperature smoke waste gas of screen cloth interior zone, due to the stop of spherical reflecting curtain and the expansion of overflow section, its flow velocity and the flow direction all there occurs change, are flowed to screen cloth neighboring area by desulfurizer slurry water curtain;
(4), in elementary desulphurization reaction dedusting area, be provided with desulfurizer slurry atomization facility at upper outlet body inner surface place, control room, be atomized by desulfurizer slurry, smoke exhaust and steam and the desulfurization agent be atomized, obtain good desulfurization, dust removing effects; Meanwhile, due to the washing of steam, the dust bulky grain in smoke exhaust collects to the control room section of cone cover body at pollution source apportionment indoor settlement, finally enters in the burnt tank in quenching compartment; Desulfurizer slurry, selects MgO slurries to carry out SO in washing absorption flue gas
2, the magnesium sulfite and magnesium sulfate that contain the crystallization water is generated by oxidation side reaction;
(5), by absorption SO
2with the oarse-grained fine grained smoke exhaust of removal dust, after discharging from elementary desulphurization reaction dedusting area, enter smoke exhaust negative pressure drainage section, in smoke exhaust negative pressure drainage section, through air flow method and the rectification of air flow method board component and straightener(stator) blade assembly, the smoke exhaust flowed in rectangle work pipeline section, air flow method is even, mid portion air-flow weakens, peripheral portion strengthens, and start to mix with the ambient windstream from flow field drive system, start to mix rear smoke exhaust temperature and start further reduction, meet the needs of the senior desulfurization and dedusting of fume and exhaust gas purifying system subsequent purification device.
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| CN201410589187.3A CN104324602B (en) | 2014-10-29 | 2014-10-29 | A kind of smoke exhaust pollution sources control device and process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104324602B (en) | 2016-05-25 |
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