CN111545058A - Coke oven flue gas denitration desulfurization waste heat utilization integrated device - Google Patents
Coke oven flue gas denitration desulfurization waste heat utilization integrated device Download PDFInfo
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- CN111545058A CN111545058A CN202010235686.8A CN202010235686A CN111545058A CN 111545058 A CN111545058 A CN 111545058A CN 202010235686 A CN202010235686 A CN 202010235686A CN 111545058 A CN111545058 A CN 111545058A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/88—Handling or mounting catalysts
- B01D53/885—Devices in general for catalytic purification of waste gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
- F28D21/001—Recuperative heat exchangers the heat being recuperated from exhaust gases for thermal power plants or industrial processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The invention discloses a denitration, desulfurization and waste heat utilization integrated device for coke oven flue gas, which comprises a desulfurization tower, a waste heat recovery assembly, a primary SCR denitration assembly, a secondary SCR denitration assembly, a primary dehumidifier and a secondary dehumidifier, which are sequentially communicated; the waste heat recovery assembly comprises a waste heat recovery box body, a cold water cavity is arranged in the waste heat recovery box body, and a heat recovery part is fixedly connected in the cold water cavity; the heat of the flue gas is recovered through a heat recovery component. Adopt above-mentioned device part to effectively improve the recycle of the energy, and above-mentioned device part has effectively realized the denitration desulfurization purification treatment of flue gas.
Description
Technical Field
The invention relates to the field of denitration and desulfurization devices for flue gas of a coke oven, in particular to an integrated device for denitration, desulfurization and waste heat utilization of the flue gas of the coke oven.
Background
With the development of industrial production, the exploitation and utilization of energy are important prerequisites for industrial production. At present, the coke capacity of China exceeds a large value, and China becomes a coke producing country and a coke consuming country in the world based on the wide exploitation and application of coal.
However, in the process of utilizing energy, such as coal combustion, a large amount of flue gas is generated, and the flue gas contains a large amount of sulfur dioxide and nitrogen oxide gases, which are one of the main factors for forming acid rain. And is also a main factor causing air pollution.
Based on the method, in order to protect the environment, the flue gas generated in the coal combustion process, such as the coke oven combustion process, is subjected to environment-friendly purification treatment, so that the content of sulfur dioxide and nitrogen oxide in the flue gas is reduced, and the environment is protected. Along with pollution influence caused by industrial development, the purification treatment of the flue gas generated in the combustion process of the coke oven is an important measure for the environmental protection treatment of the flue gas.
Based on this, there are many reports on improvement of the smoke purification technology in domestic and foreign patents, papers, periodicals, and the like.
For example, the Chinese patent application number is: 201810200697.5 discloses a flue gas desulfurization and denitrification process, which belongs to the flue gas purification field and describes the following technical scheme for purifying flue gas:
the method comprises the steps of pre-dedusting raw flue gas, a pre-oxidation stage, a desulfurization and denitration step, post-dedusting and the like, wherein the pre-dedusting can reduce the content of suspended particles in the flue gas, subsequent desulfurization and denitration are facilitated, the content of NO in the flue gas can be removed in the pre-oxidation stage, corresponding acid is generated simultaneously, the generated acid can react with alkaline substances to prepare materials required by a building, a novel efficient and low-cost desulfurization and denitration agent is adopted in the desulfurization and denitration step, the novel efficient and low-cost desulfurization and denitration agent specifically comprises coal gangue, a mixture of magnesium oxide and sodium carbonate, finally, post-dedusting is carried out on the treated flue gas, the dust of the desulfurization and denitration agent is prevented from entering the atmosphere, secondary pollution is carried out, and meanwhile, unreacted desulfurization and denitration agents can also be recovered.
However, for flue gas, after desulfurization treatment, the flue gas contains a large amount of heat, and the SCR denitration catalyst used for denitration has certain requirements on the temperature of the flue gas, so that the activity of the SCR denitration catalyst is easily reduced for high-temperature flue gas, and in the prior art, the high-temperature flue gas is treated by adopting a cooling mode, which not only causes energy waste, but also increases the cost of flue gas purification treatment.
Disclosure of Invention
The invention aims to solve the technical problem of providing an integrated device for denitration, desulfurization and waste heat utilization of coke oven flue gas.
The invention solves the technical problems through the following technical scheme:
a coke oven flue gas denitration desulfurization waste heat utilization integrated device comprises a desulfurization tower, a waste heat recovery assembly communicated with the desulfurization tower, a primary SCR denitration assembly communicated with the waste heat recovery assembly, a secondary SCR denitration assembly communicated with the primary SCR denitration assembly, a primary dehumidifier communicated with the secondary SCR denitration assembly, and a secondary dehumidifier communicated with the primary dehumidifier;
the waste heat recovery assembly comprises a waste heat recovery box body, a cold water cavity is arranged in the waste heat recovery box body, and a heat recovery part is fixedly connected in the cold water cavity;
the heat recovery part comprises a plurality of runner plates which are arranged at intervals up and down, and a plurality of runners are arranged in the runner plates;
the heat recovery component also comprises sealing elements welded at the front end and the rear end of the plurality of runner plates in a build-up manner, each sealing element comprises a sealing end plate, a smoke passing cavity is formed in each sealing end plate, a plurality of bulges communicated with the plurality of runner plates are arranged on each sealing end plate, and a plurality of convex end head pipes corresponding to the runners are communicated with the bulges;
the sealed end plates are communicated with smoke passing pipelines, and the heat recovery part is communicated to the desulfurization tower and the first-stage SCR denitration assembly through the smoke passing pipelines.
Preferably, the top of the waste heat recovery tank body is communicated with a hot water outlet pipe, and the bottom of the waste heat recovery tank body is communicated with a cold water inlet pipe;
the smoke passing pipeline penetrates through the side wall of the waste heat recovery box body.
Preferably, the longitudinal section of the flow channel plate is rectangular, and the longitudinal section of the protrusion is rectangular;
the longitudinal section of the protruding end head pipe is rectangular;
the protrusion is internally provided with a protrusion cavity, and the protrusion cavity and the smoke passing cavity of the sealing end plate are integrally formed.
Preferably, the primary SCR denitration assembly and the secondary SCR denitration assembly have the same structure;
the primary SCR denitration assembly is communicated with the secondary SCR denitration assembly through a denitration pipeline;
the second-stage SCR denitration assembly is communicated with the first-stage dehumidifier through a first dehumidification pipeline, and the second-stage dehumidifier is communicated with the first-stage dehumidifier through a second dehumidification pipeline.
Preferably, the first-stage SCR denitration assembly and the second-stage SCR denitration assembly comprise denitration boxes, cavities are formed in the denitration boxes, and a plurality of SCR denitration catalyst plates distributed up and down are fixedly connected in the denitration boxes.
Preferably, the denitration box body comprises a front box body part and a rear box body part, and the front box body part is connected with the rear box body part in a sliding manner;
the front box body part and the rear box body part are fixed through a locking piece.
Preferably, the front side wall of the rear box body part is fixedly connected with a plurality of guide rods which are symmetrically arranged left and right, the rear side wall of the front box body part is provided with a plurality of rod body cavities matched with the guide rods, and the guide rods are slidably connected in the rod body cavities.
Preferably, the locking member comprises a front locking plate fixedly connected to the top and the bottom of the front box body;
the locking piece also comprises a rear locking plate fixedly connected to the top and the bottom of the rear box body;
the front locking plate and the rear locking plate are in threaded connection with locking bolts;
the connecting end of the locking bolt penetrates through the front locking plate and the rear locking plate, and the connecting end of the locking bolt is in threaded connection with a locking nut.
Preferably, the hot water outlet pipe and the cold water inlet pipe are both provided with flanges.
Compared with the prior art, the invention has the following advantages:
through the design that the sealing end plate, the bulge end head pipe, the runner plate, the runner and the bulge end head pipe are inserted into the runner port, the flue gas enters the sealing end plate at the rear side part through the first smoke passing pipe, and is shunted through the bulge end head pipe to enter the runners in different runner plates, at the moment, the flue gas is shunted and moves forwards to the sealing end plate at the front side part from the rear side of the runner plate. Because the flue gas is shunted the back, heat radiating area is great, consequently, can be abundant contact the cold water in the waste heat recovery box, realize heat recycle. Through this mode, the heat recovery efficiency in the flue gas has been improved.
Through the same realization secondary denitration of one-level SCR denitration subassembly, second grade SCR denitration subassembly's structure, through all designing into denitration box, the SCR denitration catalyst board that a plurality of upper and lower distribution with one-level SCR denitration subassembly and second grade SCR denitration subassembly and realize that the flue gas enters into the cavity in the nitre box and flows in from the catalysis passageway in the SCR denitration catalyst board, and then realize the denitration catalysis.
Through designing into preceding box portion, back box portion with the denitration box, sliding connection between preceding box portion and the back box portion, through the guide arm, the guide arm sliding connection that the left and right symmetry of a plurality of set up of the fixed front side wall fixedly connected with that specifically adopts the back box portion of retaining member set up, guide arm between preceding box portion and the back box portion in preceding box portion, preceding locking plate, back locking plate, locking bolt, locking nut. Realize when needs are changed SCR denitration catalyst board, dismantle lock nut, pull open front box body portion, back box body portion, at this moment, the nitre box body is opened, has changed new SCR denitration catalyst board of changing, and the back is screwed up lock nut to closed front box body portion, back box body portion. And then realize changing SCR denitration catalyst board, reduce purification treatment's cost.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic diagram of the overall flow structure of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a decentralized configuration of a waste heat recovery assembly in an embodiment of the present invention;
FIG. 3 is a schematic view showing a divergent structure of a flow field plate in an embodiment of the present invention;
FIG. 4 is a schematic structural view of a seal in an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another view of the embodiment in FIG. 2;
FIG. 6 is a schematic structural diagram of a denitration box according to an embodiment of the invention;
FIG. 7 is a schematic structural view of an SCR denitration catalyst plate according to an embodiment of the present invention;
fig. 8 is a schematic view showing the structure of a locker according to an embodiment of the present invention.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
Example 1:
as shown in fig. 1-8, a denitration and desulfurization waste heat utilization integrated device for flue gas of a coke oven comprises a desulfurization tower 1, a waste heat recovery assembly 2 communicated with the desulfurization tower 1, a primary SCR denitration assembly 3 communicated with the waste heat recovery assembly 2, a secondary SCR denitration assembly 4 communicated with the primary SCR denitration assembly 3, a primary dehumidifier 5 communicated with the secondary SCR denitration assembly 4, and a secondary dehumidifier 6 communicated with the primary dehumidifier 5. I.e. the above components are in communication in sequence.
After the coke oven flue gas is desulfurized through the desulfurizing tower 1, the heat is recovered through the waste heat recovery assembly 2, the temperature of the high-temperature flue gas is reduced, and after denitration treatment is realized through the second-level SCR denitration assembly 4 of the first-level SCR denitration assembly 3, dehumidification is carried out through the second-level dehumidifier 6 of the first-level dehumidifier 5. Through the flue gas after the dehumidification processing, comparatively dry can effectively avoid discharging the back, the flue gas produces "rain and smoke" phenomenon.
The specific structure of the waste heat recovery assembly 2 is as follows:
the waste heat recovery assembly 2 comprises a waste heat recovery box body 21, a cold water cavity is arranged in the waste heat recovery box body 21, and a heat recovery part is fixedly connected in the cold water cavity. Specifically, the top of the waste heat recovery tank 21 is communicated with a hot water outlet pipe 211, and the bottom of the waste heat recovery tank 21 is communicated with a cold water inlet pipe 212; the hot water outlet pipe 211 and the cold water inlet pipe 212 are both provided with flanges. Through flange joint, let in external cold water in waste heat recovery box 21, the hot water that forms through heat recovery part heat recovery discharges from hot water exit tube 211, recycle.
The specific structure of the heat recovery component is as follows:
the heat recovery part comprises a plurality of runner plates 22 which are arranged at intervals up and down, and a plurality of runners c are arranged in the runner plates 22; the heat recovery part is still including a plurality of the surfacing the sealing member at runner plate 22 preceding, back both ends, the sealing member all includes sealed end plate 221, the flue gas cavity has been seted up in the sealed end plate 221, be equipped with a plurality of intercommunication a plurality of on the sealed end plate 221 the arch 2211 of runner plate 22, the intercommunication has the protrusion end head pipe 22111 that a plurality of and runner c correspond on protruding 2211. Specifically, the sealing end plates 221 are all communicated with smoke passing pipelines, and the heat recovery parts are communicated to the desulfurization tower 1 and the first-stage SCR denitration assembly 3 through the smoke passing pipelines. Specifically, the sealing end plate 221 located at the rear side communicates with a first smoke passage a, and the sealing end plate 221 located at the front side communicates with a second smoke passage B.
The first smoke passing pipeline A is communicated with the desulfurizing tower 1, and the second smoke passing pipeline B is communicated into the first-stage SCR denitration component 3 (the first smoke pipeline and the second smoke pipeline penetrate through the side wall of the waste heat recovery box body 21).
The longitudinal section of the flow passage plate 22 is rectangular, and the longitudinal section of the projection 2211 is rectangular; the longitudinal cross-sectional shape of the protruding tip tube 22111 is rectangular; a bulge 2211 cavity is arranged in the bulge 2211, and the bulge 2211 cavity and the smoke passing cavity of the sealing end plate 221 are integrally formed. I.e., the protruding tip tube 22111 is inserted into the flow passage c port in the flow passage plate 22.
The flue gas enters the sealing end plate 221 at the rear part through the first flue gas passing pipe a, and is split into the flow passages c in different flow passage plates 22 through the protruding end head pipe 22111, and at this time, the flue gas is split and moves forward from the rear side of the flow passage plates 22 to the sealing end plate 221 at the front part. After the flue gas is shunted, the heat dissipation area is large, so that the flue gas can fully contact with cold water in the waste heat recovery box body 21, and heat recovery and utilization are realized.
The device has the advantages of component design:
by designing the sealing end plate 221, the protrusion 2211, the protruding end tube 22111, the flow passage plate 22, the flow passage c and the protruding end tube 22111 to be inserted into the port of the flow passage c, the flue gas enters the sealing end plate 221 at the rear side part through the first smoke passing pipe a, is shunted through the protruding end tube 22111 and enters the flow passages c in different flow passage plates 22, and at the moment, the flue gas is shunted and moves forwards from the rear side of the flow passage plate 22 to the sealing end plate 221 at the front side part. After the flue gas is shunted, the heat dissipation area is large, so that the flue gas can fully contact with cold water in the waste heat recovery box body 21, and heat recovery and utilization are realized. Through this mode, the heat recovery efficiency in the flue gas has been improved.
Example 2:
as shown in fig. 1 to 8, in this embodiment, on the basis of the structure of embodiment 1, in order to implement denitration, the flue gas is denitrated by passing through a first-stage SCR denitration module and a second-stage SCR denitration module 4, specifically, the first-stage SCR denitration module 3 and the second-stage SCR denitration module 4 have the same structure; the first-stage SCR denitration assembly 3 is communicated with the second-stage SCR denitration assembly 4 through a denitration pipeline. Specifically, one-level SCR denitration subassembly 3 and second grade SCR denitration subassembly 4 all include denitration box 34, be equipped with the cavity in the denitration box 34, the SCR denitration catalyst board 32 that distributes about a plurality of fixedly connected with in the denitration box 34.
The flue gas enters the cavity in the nitrate box body and flows through the catalytic channel in the SCR denitration catalyst plate 32, and denitration catalysis is further realized.
In order to replace the SCR denitration catalyst plate 32, the denitration casing 34 is designed to be opened in a stretching manner, which is as follows:
the denitration box body 34 comprises a front box body part and a rear box body part, and the front box body part is connected with the rear box body part in a sliding manner; the front box body part and the rear box body part are fixed through a locking piece 33.
Particularly, the preceding lateral wall fixedly connected with of back box portion is the guide arm 31 that a plurality of left and right symmetry set up, the body of rod cavity of a plurality of and guide arm 31 complex is seted up to the back lateral wall of front box portion, guide arm 31 sliding connection is in the body of rod cavity.
The locker 33 includes a front locker plate 331 fixedly coupled to the top and bottom of the front case; the locking member 33 further comprises a rear locking plate fixedly connected to the top and bottom of the rear case; the front locking plate 331 and the rear locking plate are in threaded connection with locking bolts; the connecting end of the locking bolt penetrates through the front locking plate 331 and the rear locking plate, and the connecting end of the locking bolt is in threaded connection with a locking nut.
When the SCR denitration catalyst board 32 needs to be changed, the locking nut is detached, the front box body part and the rear box body part are pulled open, at the moment, the denitration box body is opened, a new SCR denitration catalyst board 32 is changed, and the locking nut is screwed down after the front box body part and the rear box body part are closed.
The device has the advantages of component design:
through one-level SCR denitration subassembly 3, the same realization secondary denitration of structure of second grade SCR denitration subassembly 4, through all designing into denitration box 34 with second grade SCR denitration subassembly 4 one-level SCR denitration subassembly 3, the SCR denitration catalyst board 32 of a plurality of upper and lower distribution realizes that the flue gas flows in the catalytic channel of cavity from SCR denitration catalyst board 32 in the flue gas entering into the nitre box, and then realizes the denitration catalysis.
Through designing denitration box 34 into preceding box portion, back box portion, sliding connection between preceding box portion and the back box portion, fix through retaining member 33 between preceding box portion and the back box portion and specifically adopt the preceding lateral wall fixedly connected with a plurality of left and right symmetrical guide arm 31, the guide arm 31 sliding connection that sets up of back box portion in preceding box portion, preceding locking plate 331, back locking plate, locking bolt 332, lock nut. Realize when needing to be changed SCR denitration catalyst board 32, dismantle lock nut, pull open preceding box portion, back box portion, at this moment, the nitre box is opened, has changed new SCR denitration catalyst board 32 of changing, and closed preceding box portion, back box portion are screwed up lock nut. And then realize changing SCR denitration catalyst board 32, reduce purification treatment's cost.
Example 3:
as shown in fig. 1 to 8, in this embodiment, on the basis of the structure of embodiment 2, in order to dry flue gas, the secondary SCR denitration module 4 is communicated with the primary dehumidifier 5 through a first dehumidification pipe, and in order to further improve the dehumidification effect, the primary dehumidifier 5 is communicated with the secondary dehumidifier 6 through a second dehumidification pipe. The flue gas passes through a primary dehumidifier 5 and a secondary dehumidifier 6 for secondary dehumidification. Wherein, the primary dehumidifier 5 and the secondary dehumidifier 6 are conventional flue gas dehumidifiers disclosed by the prior art.
The flue gas after dehumidification discharges, because of the flue gas is comparatively dry can effectively avoid the formation of "rain and smoke".
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The integrated device for denitration, desulfurization and waste heat utilization of the flue gas of the coke oven is characterized by comprising a desulfurization tower, a waste heat recovery assembly communicated with the desulfurization tower, a primary SCR denitration assembly communicated with the waste heat recovery assembly, a secondary SCR denitration assembly communicated with the primary SCR denitration assembly, a primary dehumidifier communicated with the secondary SCR denitration assembly and a secondary dehumidifier communicated with the primary dehumidifier;
the waste heat recovery assembly comprises a waste heat recovery box body, a cold water cavity is arranged in the waste heat recovery box body, and a heat recovery part is fixedly connected in the cold water cavity;
the heat recovery part comprises a plurality of runner plates which are arranged at intervals up and down, and a plurality of runners are arranged in the runner plates;
the heat recovery component also comprises sealing elements welded at the front end and the rear end of the plurality of runner plates in a build-up manner, each sealing element comprises a sealing end plate, a smoke passing cavity is formed in each sealing end plate, a plurality of bulges communicated with the plurality of runner plates are arranged on each sealing end plate, and a plurality of convex end head pipes corresponding to the runners are communicated with the bulges;
the sealed end plates are communicated with smoke passing pipelines, and the heat recovery part is communicated to the desulfurization tower and the first-stage SCR denitration assembly through the smoke passing pipelines.
2. The integrated denitration desulfurization waste heat utilization device for the coke oven flue gas as claimed in claim 1, wherein the top of the waste heat recovery tank body is communicated with a hot water outlet pipe, and the bottom of the waste heat recovery tank body is communicated with a cold water inlet pipe;
the smoke passing pipeline penetrates through the side wall of the waste heat recovery box body.
3. The integrated denitration desulfurization waste heat utilization device for the coke oven flue gas as claimed in claim 2, wherein the longitudinal section of the runner plate is rectangular, and the longitudinal section of the protrusion is rectangular;
the longitudinal section of the protruding end head pipe is rectangular;
the protrusion is internally provided with a protrusion cavity, and the protrusion cavity and the smoke passing cavity of the sealing end plate are integrally formed.
4. The integrated device for denitration, desulfurization and waste heat utilization of coke oven flue gas as claimed in claim 3, wherein the structure of the primary SCR denitration component is the same as that of the secondary SCR denitration component;
the primary SCR denitration assembly is communicated with the secondary SCR denitration assembly through a denitration pipeline;
the second-stage SCR denitration assembly is communicated with the first-stage dehumidifier through a first dehumidification pipeline, and the second-stage dehumidifier is communicated with the first-stage dehumidifier through a second dehumidification pipeline.
5. The integrated device for denitration, desulfurization and waste heat utilization of coke oven flue gas as claimed in claim 4, wherein the primary SCR denitration component and the secondary SCR denitration component comprise denitration boxes, cavities are arranged in the denitration boxes, and a plurality of SCR denitration catalyst plates distributed up and down are fixedly connected in the denitration boxes.
6. The integrated denitration, desulfurization and waste heat utilization device for the coke oven flue gas as claimed in claim 5, wherein the denitration box body comprises a front box body part and a rear box body part, and the front box body part is connected with the rear box body part in a sliding manner;
the front box body part and the rear box body part are fixed through a locking piece.
7. The integrated denitration, desulfurization and waste heat utilization device for the coke oven flue gas as claimed in claim 6, wherein the front side wall of the rear box body part is fixedly connected with a plurality of guide rods which are symmetrically arranged left and right, the rear side wall of the front box body part is provided with a plurality of rod body cavities matched with the guide rods, and the guide rods are slidably connected in the rod body cavities.
8. The integrated denitration desulfurization waste heat utilization device for the coke oven flue gas as claimed in claim 7, wherein the locking member comprises a front locking plate fixedly connected to the top and the bottom of the front box body;
the locking piece also comprises a rear locking plate fixedly connected to the top and the bottom of the rear box body;
the front locking plate and the rear locking plate are in threaded connection with locking bolts;
the connecting end of the locking bolt penetrates through the front locking plate and the rear locking plate, and the connecting end of the locking bolt is in threaded connection with a locking nut.
9. The integrated denitration, desulfurization and waste heat utilization device for the coke oven flue gas as claimed in claim 8, wherein flanges are respectively assembled on the hot water outlet pipe and the cold water inlet pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010235686.8A CN111545058A (en) | 2020-03-30 | 2020-03-30 | Coke oven flue gas denitration desulfurization waste heat utilization integrated device |
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| CN202010235686.8A CN111545058A (en) | 2020-03-30 | 2020-03-30 | Coke oven flue gas denitration desulfurization waste heat utilization integrated device |
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