CN211159285U - Coke oven flue gas desulfurization and denitrification system - Google Patents
Coke oven flue gas desulfurization and denitrification system Download PDFInfo
- Publication number
- CN211159285U CN211159285U CN201921823461.3U CN201921823461U CN211159285U CN 211159285 U CN211159285 U CN 211159285U CN 201921823461 U CN201921823461 U CN 201921823461U CN 211159285 U CN211159285 U CN 211159285U
- Authority
- CN
- China
- Prior art keywords
- heating
- flue gas
- coke oven
- heat transfer
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model discloses a coke oven flue gas desulfurization and denitrification system, which comprises a dust remover, a flue gas heat exchanger, an electromagnetic heating module, an SCR denitration reactor, an air heat exchanger, a desulfurization tower and a chimney which are connected in sequence, wherein the SCR denitration reactor and the desulfurization tower are also connected with an ammonia supply system; the electromagnetic heating module comprises two heating pipelines which are connected in parallel on a flue gas flowing pipeline, one heating pipeline is normally closed, the other heating pipeline is normally open, a plurality of electromagnetic heating sections are respectively connected in series on the two heating pipelines, the electromagnetic heating sections comprise electromagnetic induction heating coils which are sequentially arranged from outside to inside, an insulating heat insulation material layer, a heating cylinder and an enhanced heat transfer cylinder which is fixedly arranged on the inner wall of the heating cylinder, a plurality of axial ventilation holes are uniformly distributed on the enhanced heat transfer cylinder, spiral flow guide strips are coaxially arranged in the axial ventilation holes in a penetrating manner, through the cooperation of the heating cylinder and the enhanced heat transfer cylinder, the flue gas flowing through can be effectively heated, and the problem that the burden of flue gas treatment and the problem of carbon emission increase caused by fuel combustion heating are avoided.
Description
Technical Field
The utility model relates to a body-building apparatus field, concretely relates to coke oven flue gas desulfurization deNOx systems.
Background
Before the coke oven flue gas is discharged, ammonia water and ammonia gas are required to be used for desulfurization and denitrification treatment, and the process comprises the following steps: the flue gas discharged by the coke oven is dedusted, is absorbed and heated in a flue gas heat exchanger, is then introduced into a heating furnace or is introduced into a combustion furnace together with fuel gas for combustion and heating, the temperature of the flue gas is increased to the appropriate temperature (300-420 ℃) for SCR denitration, the heated flue gas is denitrated by an SCR denitration reactor and then returns to the flue gas heat exchanger to preheat the coke oven to discharge the flue gas, the temperature of the denitrated flue gas is reduced to the appropriate temperature (80-100 ℃) for desulfurization, the cooled flue gas is desulfurized by a desulfurizing tower and then is discharged by a chimney, the problems in the process are that the flue gas flowing out of the flue gas heat exchanger needs to be heated by a heating furnace or a combustion furnace, a large amount of fuel needs to be consumed, the burden of a flue gas treatment system is increased, the carbon emission is increased, today, the environmental protection requirement is increasingly strict, fuel heating is increasingly not accepted by enterprises and people, and therefore, a flue gas desulfurization and denitrification system with a clean heating mode is needed.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the background art, the utility model aims to provide a coke oven flue gas desulfurization denitration system, it has effectively solved the problem that exists among the background art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a coke oven flue gas desulfurization and denitrification system comprises a dust remover, a flue gas heat exchanger, an electromagnetic heating module, an SCR denitrification reactor, an air heat exchanger, a desulfurization tower and a chimney which are sequentially connected, wherein ammonia supply systems are further connected to the SCR denitrification reactor and the desulfurization tower, each ammonia supply system comprises an ammonia tank and an ammonia pump, and an evaporator is further arranged between each ammonia pump and the SCR denitrification reactor;
the electromagnetic heating module comprises two heating pipelines which are connected in parallel on a flue gas flowing pipeline, butterfly valves are arranged at two ends of each heating pipeline respectively, one heating pipeline is normally closed, the other heating pipeline is normally open, a plurality of electromagnetic heating sections are connected in series on the two heating pipelines respectively, each electromagnetic heating section comprises an electromagnetic induction heating coil, an insulating heat insulation material layer, a heating cylinder and a reinforced heat transfer cylinder which is fixedly arranged on the inner wall of the heating cylinder from outside to inside in sequence, the reinforced heat transfer cylinder and the heating cylinder are coaxially arranged, a plurality of axial ventilation holes are uniformly distributed on the reinforced heat transfer cylinder, and spiral flow guide strips are coaxially arranged in the axial ventilation holes in a penetrating mode.
Furthermore, an air circulation pipeline is connected to the air heat exchanger, an inlet end and an outlet end of the air circulation pipeline are respectively connected with an air blower and an air outlet nozzle, and the air outlet nozzle is coaxially arranged at the bottom of the chimney.
Further, the length of the electromagnetic heating section is 1-1.5 m.
Furthermore, the insulating and heat-insulating material layer is made of ceramic fibers.
Furthermore, the both ends of strengthening the heat transfer section of thick bamboo respectively the detachable be provided with the mounting disc, set up on the mounting disc with the through-hole of axial ventilation hole one-to-one has set firmly the grafting ring in the through-hole, the both ends of spiral water conservancy diversion strip set firmly respectively with grafting ring matched with step form inserted bar.
Furthermore, an inserting rod is fixedly arranged on the reinforced heat transfer cylinder, a jack matched with the inserting rod is arranged on the mounting disc, a pin hole is formed in the inserting rod, and a pin rod is inserted in the pin hole.
The utility model discloses following beneficial technological effect has:
the utility model discloses in applied electromagnetic heating module, through the cooperation of cartridge heater and intensive heat transfer section of thick bamboo, can effectively heat the flue gas of flowing through, avoided the flue gas that the fuel burning heating brought to handle burden and carbon emission increase problem, more friendly to the environment, be fit for using widely.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an electromagnetic heating module according to an embodiment of the present invention;
fig. 3 is a schematic view of an internal structure of an electromagnetic heating section according to an embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is an enlarged view of a portion of FIG. 3 at B;
FIG. 6 is a side view of an embodiment of the enhanced heat transfer cartridge of the present invention;
fig. 7 is a schematic view of the overall structure of the spiral flow guide strip according to the embodiment of the present invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-7, the coke oven flue gas desulfurization and denitrification system according to the embodiment includes a dust remover 1, a flue gas heat exchanger 2, an electromagnetic heating module 3, an SCR denitration reactor 4, an air heat exchanger 5, a desulfurization tower 6 and a chimney 7 which are connected in sequence, an ammonia supply system is further connected to the SCR denitration reactor 4 and the desulfurization tower 6, the ammonia supply system includes an ammonia tank and an ammonia pump 8, an evaporator 9 is further disposed between the ammonia pump 8 and the SCR denitration reactor 4, a part of ammonia enters the desulfurization tower 6 through a pipeline to be sprayed to realize flue gas desulfurization, and the other part of ammonia enters the evaporator 9 to become ammonia gas, and then enters the SCR denitration reactor 4 through a pipeline to realize flue gas denitrification;
the electromagnetic heating module 3 comprises two heating pipelines 11 connected in parallel on a flue gas flowing pipeline 10, butterfly valves 12 are respectively arranged at two ends of each heating pipeline 11, one heating pipeline 11 is normally closed, the other heating pipeline 11 is normally open, a plurality of electromagnetic heating sections 13 are respectively connected in series on the two heating pipelines 11, the electromagnetic heating sections 13 are sequentially connected and connected on the heating pipelines 11 through flanges, each electromagnetic heating section 13 comprises an electromagnetic induction heating coil 14, an insulating heat insulation material layer 15, a heating cylinder 16 and a reinforced heat transfer cylinder 17 fixedly arranged on the inner wall of the heating cylinder 16, the insulating heat insulation material layer 15 is made of ceramic fibers, the outer wall of the reinforced heat transfer cylinder 17 is tightly contacted with the inner wall of the heating cylinder 16, the reinforced heat transfer cylinder 17 and the heating cylinder 16 are coaxially arranged, a plurality of axial vent holes 18 are uniformly distributed on the reinforced heat transfer cylinder 17, and spiral guide strips 19 are coaxially penetrated in the axial vent holes 18, the length of the electromagnetic heating section 13 is 1-1.5 m.
The two ends of the reinforced heat transfer cylinder 17 are respectively detachably provided with a mounting disc 20, the mounting disc 20 is provided with through holes 21 corresponding to the axial vent holes 18 in a one-to-one mode, inserting rings 22 are welded in the through holes 21, stepped inserting rods 23 matched with the inserting rings 22 are welded at the two ends of the spiral flow guide strips 19 respectively, inserting rods 24 are further welded on the reinforced heat transfer cylinder 17, inserting holes 25 matched with the inserting rods 24 are formed in the mounting disc 20, pin holes 26 are formed in the inserting rods 24, and pin rods 27 are inserted in the pin holes 26.
The air heat exchanger 5 is connected with an air circulation pipeline 28, the inlet end and the outlet end of the air circulation pipeline 28 are respectively connected with an air blower 29 and an air outlet nozzle 30, the air outlet nozzle 30 is coaxially arranged at the bottom of the chimney 7, the temperature of air passing through the air heat exchanger 5 rises and is sprayed upwards from the air outlet nozzle 30, an induction effect is achieved, smoke in the chimney 7 is driven to flow upwards out of the chimney 7, and the situation that smoke in the chimney 7 is accumulated to influence the smoke discharge of the coke oven is avoided.
The working principle of the embodiment is as follows:
the flue gas discharged by the coke oven firstly enters a dust remover 1, such as a bag type dust remover for dust removal, the flue gas after dust removal enters a flue gas heat exchanger 2 for heat exchange with the flue gas discharged by an SCR denitration reactor 4 and heat absorption and temperature rise, then enters an electromagnetic heating module 3, a butterfly valve 12 controls one heating pipeline 11 in the electromagnetic heating module 3 to be normally closed and the other heating pipeline 11 to be normally open, the flue gas entering the heating pipeline 11 flows through an enhanced heat transfer cylinder 17 and is heated, in the process, the flue gas rotates and flows under the action of a spiral guide strip 19 in an axial vent hole 18, the heat exchange area is increased, the heat exchange time is prolonged, the heating of the flue gas and the electricity saving of the electromagnetic heating module 3 are facilitated, the flue gas is introduced into the SCR denitration reactor 4 after the temperature of the flue gas is increased to the proper temperature (300-420 ℃) through the heating pipeline 11, and the ammonia gas sent out from an evaporator 9, the ammonia gas and the flue gas react to realize denitration of the flue gas, the flue gas after denitration returns to the flue gas heat exchanger 2 to preheat the flue gas discharged by the coke oven, then flows into the air heat exchanger 5 to exchange heat with the air blown by the air blower 29, the temperature of the air is increased and the temperature of the air is reduced, the specific gravity of the air after temperature rise is reduced, the flue gas is more favorable for being discharged upwards and inducing the flue gas in the chimney 7 to flow, the temperature of the flue gas flowing out of the air heat exchanger 5 is reduced to the appropriate temperature (80-100 ℃) for desulfuration, and then the flue gas is sent into the desulfurizing tower 6 and sprayed with ammonia water to realize desulfuration of; in the process, through the matching of the heating cylinder 16 and the enhanced heat transfer cylinder 17, the flowing flue gas can be effectively heated, the problems of flue gas treatment burden and carbon emission increase caused by fuel combustion heating are avoided, and the environment is more friendly;
in addition, although the dust removal efficiency of the bag type dust collector can reach 99%, part of dust still enters the electromagnetic heating module 3, if the heating efficiency of the electromagnetic heating module 3 is seriously influenced without cleaning for a long time, when the electromagnetic heating module 3 is cleaned, the butterfly valve 12 on the normally closed heating pipeline 11 is opened, the butterfly valve 12 on the normally open heating pipeline 11 is closed, smoke flows into the normally closed heating pipeline 11 for heating, at the moment, the electromagnetic heating section 13 on the normally open heating pipeline 11 can be conveniently detached, the mounting disc 20 and the spiral flow guide strip 19 in the normally open heating pipeline can also be conveniently cooled and detached, the length of the electromagnetic heating section 13 is 1-1.5m, so that the inner wall of the heating cylinder 16, the reinforced heat transfer cylinder 17, the axial vent hole 18 and the spiral flow guide strip 19 can be conveniently cleaned and cleaned, after the cleaning is finished, the assembled electromagnetic heating section 13 is installed back on the normally open heating pipeline 11, at this time, the normally open heating pipeline 11 after cleaning can be used as the normally closed heating pipeline 11, and the two heating pipelines 11 are matched with each other, so that non-stop cleaning and maintenance of the electromagnetic heating module 3 can be realized, and the influence on smoke discharge of the coke oven is avoided.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (6)
1. A coke oven flue gas desulfurization and denitrification system is characterized by comprising a dust remover, a flue gas heat exchanger, an electromagnetic heating module, an SCR (selective catalytic reduction) denitrification reactor, an air heat exchanger, a desulfurization tower and a chimney which are sequentially connected, wherein ammonia supply systems are further connected to the SCR denitrification reactor and the desulfurization tower, each ammonia supply system comprises an ammonia water tank and an ammonia water pump, and an evaporator is further arranged between each ammonia water pump and the SCR denitrification reactor;
the electromagnetic heating module comprises two heating pipelines which are connected in parallel on a flue gas flowing pipeline, one heating pipeline is normally closed, the other heating pipeline is normally open, a plurality of electromagnetic heating sections are respectively connected in series on the two heating pipelines, each electromagnetic heating section comprises an electromagnetic induction heating coil, an insulating heat insulation material layer, a heating cylinder and an enhanced heat transfer cylinder which is fixedly arranged on the inner wall of the heating cylinder, the enhanced heat transfer cylinder and the heating cylinder are coaxially arranged, a plurality of axial ventilation holes are uniformly distributed on the enhanced heat transfer cylinder, and spiral flow guide strips are coaxially arranged in the axial ventilation holes in a penetrating mode.
2. The coke oven flue gas desulfurization and denitrification system according to claim 1, wherein an air circulation pipeline is connected to the air heat exchanger, an air blower and an air outlet nozzle are respectively connected to the inlet end and the outlet end of the air circulation pipeline, and the air outlet nozzle is coaxially arranged at the bottom of a chimney.
3. The coke oven flue gas desulfurization and denitrification system of claim 1, wherein the length of the electromagnetic heating section is 1-1.5 m.
4. The coke oven flue gas desulfurization and denitrification system as claimed in claim 1, wherein the insulating and heat-insulating material layer is made of ceramic fibers.
5. The coke oven flue gas desulfurization and denitrification system according to claim 1, wherein mounting discs are detachably arranged at two ends of the reinforced heat transfer cylinder respectively, through holes corresponding to the axial vent holes in a one-to-one manner are formed in the mounting discs, inserting rings are fixedly arranged in the through holes, and stepped inserting rods matched with the inserting rings are fixedly arranged at two ends of the spiral flow guide strip respectively.
6. The coke oven flue gas desulfurization and denitrification system as claimed in claim 5, wherein the reinforced heat transfer cylinder is fixedly provided with an insertion rod, the mounting plate is provided with a jack matched with the insertion rod, the insertion rod is provided with a pin hole, and a pin rod is inserted into the pin hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921823461.3U CN211159285U (en) | 2019-10-28 | 2019-10-28 | Coke oven flue gas desulfurization and denitrification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921823461.3U CN211159285U (en) | 2019-10-28 | 2019-10-28 | Coke oven flue gas desulfurization and denitrification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211159285U true CN211159285U (en) | 2020-08-04 |
Family
ID=71803630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921823461.3U Active CN211159285U (en) | 2019-10-28 | 2019-10-28 | Coke oven flue gas desulfurization and denitrification system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211159285U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113797752A (en) * | 2021-10-29 | 2021-12-17 | 宜兴市苏哈电力设备有限公司 | A high-efficient dry process SOx/NOx control system for flue gas is handled |
-
2019
- 2019-10-28 CN CN201921823461.3U patent/CN211159285U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113797752A (en) * | 2021-10-29 | 2021-12-17 | 宜兴市苏哈电力设备有限公司 | A high-efficient dry process SOx/NOx control system for flue gas is handled |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206823460U (en) | Carbon workshop system for desulfuration and denitration | |
| CN106766141A (en) | A kind of condensation-type gas-fired heating water heater | |
| CN211159285U (en) | Coke oven flue gas desulfurization and denitrification system | |
| CN106621809A (en) | Regeneration tower waste heat recovering system and method of activated coke dry method desulfurizer | |
| CN210568553U (en) | Boiler flue gas treatment system | |
| CN103453751B (en) | A kind of high hot waste gas energy utilization system | |
| CN206514512U (en) | A kind of condensation-type gas-fired heating water heater | |
| CN202380054U (en) | Heating hood for hood-type annealing furnace | |
| CN206103709U (en) | Glass high -temperature furnace flue gas energy saving and emission reduction clean system | |
| CN201779983U (en) | Heat accumulating-type combustion reformed heating furnace | |
| CN212511236U (en) | Exhaust pipe | |
| CN211372476U (en) | Rotation air preheater blocks up prevention and cure system | |
| CN204177191U (en) | Highly effective aluminium-melting stove catalytic combustion system | |
| CN209819578U (en) | Anti-blocking device of horizontal tubular air preheater | |
| CN210145740U (en) | Dust removal defogging white cigarette integration system that disappears | |
| CN113237086A (en) | Pipe type air preheater ammonium bisulfate blockage comprehensive treatment device and modification method | |
| CN208832485U (en) | A kind of waste gas catalytic combustion device | |
| CN106016306B (en) | Organic solvent prepainted waste gas incinerator system and its application method | |
| CN207302754U (en) | A kind of horizontal environmentally friendly enamelling machine | |
| CN102135271A (en) | Flue gas waste heat recovery energy-saver of boiler wet desulphurization system | |
| CN202083089U (en) | Waste heat utilizing system for boiler | |
| CN220689116U (en) | Flue gas heating device of fuel oil heat conduction oil boiler | |
| WO2008078219A1 (en) | A heat exchanger | |
| CN216868522U (en) | Flue gas reduction is with SNCR system efficiency-raising stove | |
| CN206131051U (en) | Intubation type air heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |