CN110665350A - Efficient multistage desulfurization system - Google Patents

Efficient multistage desulfurization system Download PDF

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Publication number
CN110665350A
CN110665350A CN201910938197.6A CN201910938197A CN110665350A CN 110665350 A CN110665350 A CN 110665350A CN 201910938197 A CN201910938197 A CN 201910938197A CN 110665350 A CN110665350 A CN 110665350A
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CN
China
Prior art keywords
desulfurization tower
smoke
tower
desulfurization
regulating valve
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Withdrawn
Application number
CN201910938197.6A
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Chinese (zh)
Inventor
宋娜
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Wuxue Chengrunxiang Technology Co Ltd
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Wuxue Chengrunxiang Technology Co Ltd
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Priority to CN201910938197.6A priority Critical patent/CN110665350A/en
Publication of CN110665350A publication Critical patent/CN110665350A/en
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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
    • B01D53/75—Multi-step processes
    • 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
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • 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
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0005—Domestic hot-water supply systems using recuperation of waste heat
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treating Waste Gases (AREA)
  • Chimneys And Flues (AREA)

Abstract

The invention discloses a high-efficiency multistage desulfurization system, which comprises a desulfurization tower main body, an induced draft fan, a main pipeline, a desulfurizer feeding chamber, a branch pipeline, a first smoke quantity regulating valve, a second smoke quantity regulating valve, a third smoke quantity regulating valve and a smoke exhaust pipeline, wherein the desulfurization tower main body comprises a primary desulfurization tower, a secondary desulfurization tower and a tertiary desulfurization tower, the primary desulfurization tower, the secondary desulfurization tower and the tertiary desulfurization tower are arranged in parallel, the bottoms of the primary desulfurization tower, the secondary desulfurization tower and the tertiary desulfurization tower are respectively provided with a smoke inlet, the tops of the primary desulfurization tower, the secondary desulfurization tower and the tertiary desulfurization tower are respectively provided with a smoke outlet, the smoke outlet at the top of each desulfurization tower is communicated with the smoke exhaust pipeline, one end of the smoke exhaust pipeline is sealed, the other end of the smoke exhaust pipeline is communicated with the atmosphere, the air outlet of the induced draft fan is connected with the main pipeline, the multistage desulfurization system has, the energy is saved, the single-tower parking is allowed, the maintenance is convenient, and the normal operation of the desulfurization system is guaranteed.

Description

Efficient multistage desulfurization system
Technical Field
The invention relates to the technical field of desulfurization, in particular to a high-efficiency multistage desulfurization system.
Background
In the existing domestic flue gas desulfurization process, in order to save investment cost or improve desulfurization effect, a purification process form of single-tower desulfurization or partial multi-tower series desulfurization is usually adopted. Although the two process systems can meet the requirements of flue gas purification, once the system has a fault of the desulfurizing tower, the whole desulfurizing system must be stopped, and the flue gas cannot be subjected to desulfurizing treatment during the system maintenance. In view of the above, it is desirable to design a desulfurization system that can cope with the failure of the desulfurization tower system and maintain continuous operation.
Disclosure of Invention
The present invention aims to provide a high-efficiency multi-stage desulfurization system to solve the problems of the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a high-efficiency multistage desulfurization system comprises a desulfurization tower main body, an induced draft fan, a main pipeline, branch pipelines, a first smoke quantity regulating valve, a second smoke quantity regulating valve, a third smoke quantity regulating valve and an exhaust pipeline, wherein the desulfurization tower main body comprises a primary desulfurization tower, a secondary desulfurization tower and a tertiary desulfurization tower, the primary desulfurization tower, the secondary desulfurization tower and the tertiary desulfurization tower are arranged side by side, the bottoms of the primary desulfurization tower, the secondary desulfurization tower and the tertiary desulfurization tower are respectively provided with a smoke inlet, the tops of the primary desulfurization tower, the secondary desulfurization tower and the tertiary desulfurization tower are respectively provided with a smoke outlet, the smoke outlet at the top of each desulfurization tower is respectively communicated with the exhaust pipeline, one end of the exhaust pipeline is sealed, the other end of the exhaust pipeline is communicated with the atmosphere, the air outlet of the induced draft fan is connected with the main pipeline, the side wall of the main pipeline is provided with three branch pipeline interfaces, and the three branch pipeline interfaces of, the other end of each branch pipeline is respectively connected with a flue gas inlet in the first-stage desulfurizing tower, the second-stage desulfurizing tower and the third-stage desulfurizing tower, and the branch pipelines on the first-stage desulfurizing tower, the second-stage desulfurizing tower and the third-stage desulfurizing tower are respectively and fixedly provided with a first smoke quantity adjusting valve, a second smoke quantity adjusting valve and a third smoke quantity adjusting valve which are used for adjusting the size of smoke quantity.
As a further scheme of the invention: the branch pipeline comprises an inner pipe body and an outer pipe body, the two ends of the inner pipe body and the two ends of the outer pipe body are fixedly connected through annular end plates, an annular accommodating cavity is formed among the inner pipe body, the outer pipe body and the annular end plates, and the spiral heating pipe is fixedly installed in the annular accommodating cavity.
As a still further scheme of the invention: the spiral heating pipe is attached to the outer wall of the inner pipe body, a heating pipe inlet is formed in one end of the spiral heating pipe, a heating pipe outlet is formed in the other end of the spiral heating pipe, and the heating pipe inlet and the heating pipe outlet are both penetrated to the outside of the outer pipe body.
As a still further scheme of the invention: and a water valve is fixedly arranged on the inlet of the heating pipe.
As a still further scheme of the invention: a plurality of spiral throttling net plates are fixedly arranged in the inner pipe body, and a plurality of through holes are formed in the spiral throttling net plates.
Compared with the prior art, the invention has the beneficial effects that:
the utility model has the advantages of simple structure, high durability and convenient use, this is parallelly connected the setting with multistage desulfurizing tower in fact, make no complicated governing valve in the system and allow single tower to park, solve desulfurizing tower trouble hidden danger, many towers can be stopped single tower or gradually stop many towers according to plan and overhaul under the prerequisite of guaranteeing desulfurization normal operating, reach good energy-conserving effect simultaneously, the operating efficiency of the improvement system, and the lateral duct comprises two-layer body, fixed mounting spiral heating pipe in the lateral duct inner chamber, can cool down the high temperature flue gas, provide the production domestic water simultaneously, energy saving, economic benefits is improved, spiral throttle otter board can play the cushioning effect to the flue gas, slow down the flue gas speed of passing, the desulfurization effect is improved.
Drawings
FIG. 1 is a schematic diagram of a multi-stage desulfurization system.
FIG. 2 is a schematic structural diagram of a spiral throttle screen plate in a multi-stage desulfurization system.
FIG. 3 is a schematic structural diagram of a spiral heating tube in a multi-stage desulfurization system.
In the figure: desulfurizing tower main part 1, one-level desulfurizing tower 11, second grade desulfurizing tower 12, tertiary desulfurizing tower 13, flue gas entry 111, exhanst gas outlet 112, draught fan 2, trunk line 3, lateral conduit 4, heating pipe entry 41, outer body 42, spiral heating pipe 43, interior body 44, spiral throttle screen 45, heating pipe outlet 46, water valve 47, annular end plate 48, first smoke volume governing valve 5, second smoke volume governing valve 51, third smoke volume governing valve 52 and exhaust pipe 6, room 7 is put in to the desulfurizer, lateral conduit fin 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, in the embodiment of the present invention, an efficient multi-stage desulfurization system includes a desulfurization tower main body 1, a first-stage desulfurization tower 11, a second-stage desulfurization tower 12, a third-stage desulfurization tower 13, a flue gas inlet 111, a flue gas outlet 112, an induced draft fan 2, a main pipe 3, a branch pipe 4, a heating pipe inlet 41, an outer pipe body 42, a spiral heating pipe 43, an inner pipe body 44, a spiral throttle screen 45, a heating pipe outlet 46, a water valve 47, an annular end plate 48, a first smoke quantity regulating valve 5, a second smoke quantity regulating valve 51, a third smoke quantity regulating valve 52, and a smoke exhaust pipe 6, wherein the desulfurization tower main body 1 includes a first-stage desulfurization tower 11, a second-stage desulfurization tower 12, and a third-stage desulfurization tower 13, and the first-stage desulfurization tower 11, the second-stage desulfurization tower 12, and the third-stage desulfurization tower 13 are arranged in parallel, and the bottoms of the, the top of the first-stage desulfurizing tower 11, the second-stage desulfurizing tower 12 and the third-stage desulfurizing tower 13 are all provided with flue gas outlets 112, the flue gas outlet 112 at the top of each desulfurizing tower is communicated with the smoke exhaust pipeline 6, one end of the smoke exhaust pipeline 6 is sealed, the other end of the smoke exhaust pipeline 6 is communicated with the atmosphere, the air outlet of the draught fan 2 is connected with the main pipeline 3, the side wall of the main pipeline 3 is provided with three branch pipe interfaces, the three branch pipe interfaces of the main pipeline 3 are all fixedly connected with one end of a branch pipe 4, the other end of each branch pipe 4 is respectively connected with the flue gas inlet 111 in the first-stage desulfurizing tower 11, the second-stage desulfurizing tower 12 and the third-stage desulfurizing tower 13, the branch pipes 4 on the first-stage desulfurizing tower 11, the second-stage desulfurizing tower 12 and the third-stage desulfurizing tower 13 are respectively and fixedly provided with a first smoke quantity regulating valve 5, a second smoke quantity regulating valve 51 and a, the two ends of the inner tube 44 and the outer tube 42 are fixedly connected by an annular end plate 48, an annular accommodating cavity is formed among the inner tube 44, the outer tube 42 and the annular end plate 48, and the spiral heating tube 43 is fixedly arranged in the annular accommodating cavity; the spiral heating pipe 43 is attached to the outer wall of the inner pipe body 44, a heating pipe inlet 41 is arranged at one end of the spiral heating pipe 43, a heating pipe outlet 46 is arranged at the other end of the spiral heating pipe 43, and the heating pipe inlet 41 and the heating pipe outlet 46 both penetrate through the outer part of the outer pipe body 42; a water valve 47 is fixedly arranged on the heating pipe inlet 41; a plurality of spiral throttling mesh plates 45 are fixedly arranged inside the inner pipe body 44, and a plurality of through holes are formed in the spiral throttling mesh plates 45; when the device is used, the induced draft fan 2 introduces the coke oven flue gas into the desulfurization system, the main pipeline 3 is further connected with the branch pipelines 4, the coke oven flue gas is simply shunted, the branch pipelines 4 are respectively connected with the desulfurization tower flue gas inlets 111, and the shunted coke oven flue gas enters the desulfurization tower main body 1 through the branch pipelines 4, so that flue gas desulfurization is realized; the plurality of branch pipelines 4 are provided with a first smoke quantity regulating valve 5, the first-stage desulfurizing tower 11, the second-stage desulfurizing tower 12 and the third-stage desulfurizing tower 13 are respectively provided with a first smoke quantity regulating valve 5, a second smoke quantity regulating valve 51 and a third smoke quantity regulating valve 52, and the switches of the smoke quantity regulating valves can be regulated according to the sizes of smoke quantities so as to control the number of the desulfurizing tower bodies 1 for desulfurizing and purifying treatment; besides, a plurality of desulfurizing tower exhanst gas outlet 112 all connect exhaust pipe 6, the flue gas after the desulfurization purification collects the discharge through exhaust pipe 6, when the trouble appears in any one-level desulfurizing tower wherein and when waiting to maintain, all can close corresponding smoke quantity governing valve, the coke oven flue gas reposition of redundant personnel is to in the other two-stage desulfurizing tower, avoid desulfurization system whole to stop transport, insert in the heating pipe entry 41 with outside water source, and flow in spiral heating pipe 43, when high temperature flue gas passes through lateral conduit 4, the water in spiral heating pipe 43 can cool down the high temperature flue gas, hot water is discharged by heating pipe outlet 46, can provide the production domestic water, the energy saving, when the flue gas passes through spiral throttle otter board 45, can play the cushioning effect to the flue gas, slow down the flue gas speed of passing, improve desulfurization effect.
The working principle of the invention is as follows:
when the device is used, the induced draft fan 2 introduces the coke oven flue gas into the desulfurization system, the main pipeline 3 is further connected with the branch pipelines 4, the coke oven flue gas is simply shunted, the branch pipelines 4 are respectively connected with the desulfurization tower flue gas inlets 111, and the shunted coke oven flue gas enters the desulfurization tower main body 1 through the branch pipelines 4, so that flue gas desulfurization is realized; the plurality of branch pipelines 4 are provided with a first smoke quantity regulating valve 5, the first-stage desulfurizing tower 11, the second-stage desulfurizing tower 12 and the third-stage desulfurizing tower 13 are respectively provided with a first smoke quantity regulating valve 5, a second smoke quantity regulating valve 51 and a third smoke quantity regulating valve 52, and the switches of the smoke quantity regulating valves can be regulated according to the sizes of smoke quantities so as to control the number of the desulfurizing tower bodies 1 for desulfurizing and purifying treatment; besides, a plurality of desulfurizing tower exhanst gas outlet 112 all connect exhaust pipe 6, the flue gas after the desulfurization purification collects the discharge through exhaust pipe 6, when the trouble appears in any one-level desulfurizing tower wherein and when waiting to maintain, all can close corresponding smoke quantity governing valve, the coke oven flue gas reposition of redundant personnel is to in the other two-stage desulfurizing tower, avoid desulfurization system whole to stop transport, insert in the heating pipe entry 41 with outside water source, and flow in spiral heating pipe 43, when high temperature flue gas passes through lateral conduit 4, the water in spiral heating pipe 43 can cool down the high temperature flue gas, hot water is discharged by heating pipe outlet 46, can provide the production domestic water, the energy saving, when the flue gas passes through spiral throttle otter board 45, can play the cushioning effect to the flue gas, slow down the flue gas speed of passing, improve desulfurization effect.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims (3)

1. A high-efficiency multistage desulfurization system comprises a desulfurization tower main body (1), an induced draft fan (2), a main pipeline (3), branch pipelines (4), a first smoke quantity regulating valve (5), a second smoke quantity regulating valve (51), a third smoke quantity regulating valve (52) and a smoke exhaust pipeline (6), and a desulfurizer throwing chamber (7) is characterized in that the desulfurization tower main body (1) comprises a primary desulfurization tower (11), a secondary desulfurization tower (12) and a tertiary desulfurization tower (13), the primary desulfurization tower (11), the secondary desulfurization tower (12) and the tertiary desulfurization tower (13) are arranged in parallel, a smoke inlet (111) is formed at the bottoms of the primary desulfurization tower (11), the secondary desulfurization tower (12) and the tertiary desulfurization tower (13), smoke outlets (112) are formed at the tops of the primary desulfurization tower (11), the secondary desulfurization tower (12) and the tertiary desulfurization tower (13), and the smoke outlet (112) at the top of each desulfurization tower is communicated with the smoke exhaust pipeline (6), one end of a smoke exhaust pipeline (6) is sealed, the other end of the smoke exhaust pipeline (6) is communicated with the atmosphere, an air outlet of an induced draft fan (2) is connected with a main pipeline (3), three branch pipe connectors are arranged on the side wall of the main pipeline (3), the three branch pipe connectors of the main pipeline (3) are fixedly connected with one ends of branch pipelines (4), the other end of each branch pipeline (4) is respectively connected with a flue gas inlet (111) in a first-stage desulfurizing tower (11), a second-stage desulfurizing tower (12) and a third-stage desulfurizing tower (13), a first smoke quantity regulating valve (5), a second smoke quantity regulating valve (51) and a third smoke quantity regulating valve (52) which are used for regulating the smoke quantity are fixedly arranged on the branch pipelines (4) on the first-stage desulfurizing tower (11), the second-stage desulfurizing tower (12) and the third-stage desulfurizing tower (13) respectively, the branch pipelines (4) are composed of an inner pipe body, the two ends of the inner pipe body (44) and the outer pipe body (42) are fixedly connected through an annular end plate (48), an annular accommodating cavity is formed among the inner pipe body (44), the outer pipe body (42) and the annular end plate (48), the spiral heating pipe (43) is fixedly installed in the annular accommodating cavity, the spiral heating pipe (43) is attached to the outer wall of the inner pipe body (44), a heating pipe inlet (41) is arranged at one end of the spiral heating pipe (43), a heating pipe outlet (46) is arranged at the other end of the spiral heating pipe (43), the heating pipe inlet (41) and the heating pipe outlet (46) both penetrate through the outer part of the outer pipe body (42), a desulfurizer throwing chamber (7), a desulfurizer throwing chamber (71) and a desulfurizer throwing chamber (72) are respectively arranged behind the first smoke quantity regulating valve (5), the second smoke quantity regulating valve (51) and the third smoke quantity regulating valve (52) and are connected to the branch pipe, so that the desulfurizer can be dispersed to promote the reaction, and a plurality of branch pipeline radiating fins (8) are arranged outside the branch pipelines (4), thereby improving the radiating efficiency.
2. The multi-stage desulfurization system of claim 1, wherein a water valve (47) is fixedly installed on the heating pipe inlet (41).
3. The multi-stage desulfurization system of claim 1, wherein a plurality of spiral throttle screen plates (45) are fixedly installed inside the inner tube body (44), and a plurality of through holes are formed on the spiral throttle screen plates (45).
CN201910938197.6A 2019-09-30 2019-09-30 Efficient multistage desulfurization system Withdrawn CN110665350A (en)

Priority Applications (1)

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CN201910938197.6A CN110665350A (en) 2019-09-30 2019-09-30 Efficient multistage desulfurization system

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114682059A (en) * 2020-12-30 2022-07-01 中国石油化工股份有限公司 Branch type white smoke eliminating equipment and white smoke eliminating method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114682059A (en) * 2020-12-30 2022-07-01 中国石油化工股份有限公司 Branch type white smoke eliminating equipment and white smoke eliminating method
CN114682059B (en) * 2020-12-30 2023-07-04 中国石油化工股份有限公司 Branch type white smoke eliminating equipment and white smoke eliminating method

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Application publication date: 20200110