CN219177686U - Waste heat recovery system of deoxidizing box of boiler - Google Patents
Waste heat recovery system of deoxidizing box of boiler Download PDFInfo
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- CN219177686U CN219177686U CN202223569541.5U CN202223569541U CN219177686U CN 219177686 U CN219177686 U CN 219177686U CN 202223569541 U CN202223569541 U CN 202223569541U CN 219177686 U CN219177686 U CN 219177686U
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- soft water
- deaerator
- boiler
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- heat exchanger
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The utility model relates to the technical field of waste heat recovery, and particularly discloses a waste heat recovery system of a boiler deoxidizing box, which comprises a boiler part, a deoxidizer part, a heat exchanger part and a soft water system part; the boiler part comprises a boiler body, and a primary energy saver is arranged on the boiler body; the deaerator part comprises a deaerator, and the primary energy saver is connected to the boiler body; the heat exchanger part is provided with a primary plate heat exchanger and a secondary plate heat exchanger, the lower part of the primary plate heat exchanger is provided with a heat exchanger condensate pipe, and the heat exchanger condensate pipe is connected to the interior of the deaerator; the soft water system part comprises a soft water tank, a soft water pipeline and a primary soft water inlet pipeline; the first-stage soft water outlet pipeline is connected to the soft water tank. The waste heat of the flash steam of the deaerator is fully utilized by absorbing most of the waste heat of the flash steam of the deaerator and then entering the deaerator, so that the waste heat recovery effect is good and the recovery efficiency is high.
Description
Technical Field
The utility model relates to the technical field of waste heat recovery, in particular to a waste heat recovery system of a boiler deoxidizing box.
Background
In the tobacco factory processing, a boiler system is necessary equipment, and the boiler can provide required high-temperature steam and heat for tobacco shred production, for example, steam is required for primary baking, redrying, shredding and rolling in the tobacco leaf production process; the boiler deaerator is one of the equipment in the boiler system, and under normal operating conditions, the boiler deaerator needs to consume steam generated by the boiler to deoxidize softened water and heat the softened water to about 104 ℃ for the boiler, and a large amount of exhaust steam can be discharged after the deaerator uses the steam, and the temperature of the exhaust steam can reach about 110 ℃, and still contains a large amount of heat. At present, a large amount of heat contained in the exhaust steam is directly discharged into the atmosphere, so that the heat cannot be recycled, and the concept of energy conservation and consumption reduction of enterprises is not met.
In addition, when the autumn and winter meet low-temperature weather, a great amount of heat contained in exhaust steam is directly discharged to the outside and can be condensed in the atmosphere to become condensed water, so that the exhaust pipe is in a state of 'white steam emission', and the enterprise image is damaged. Along with the current technical improvement project, the better emphasis is on fully considering the factors of energy conservation, emission reduction and environmental protection, and the traditional boiler system of the tobacco plant is a great content of the technical improvement.
Disclosure of Invention
Aiming at the defects, the utility model provides a waste heat recovery system of a boiler deoxidizing box, which solves the problem that the existing boiler system cannot effectively recover waste heat.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a waste heat recovery system of a boiler deoxidizing box comprises a boiler part, a deoxidizer part, a heat exchanger part and a soft water system part;
the boiler part comprises a boiler body, and a primary energy saver is arranged on the boiler body;
the deaerator part comprises a deaerator, the deaerator is connected with a water supply electric valve, the water supply electric valve is connected to a boiler water supply pump through a boiler water supply pipeline, the boiler water supply pump is connected to a primary energy saver through the boiler water supply pipeline, and the primary energy saver is connected to the boiler body;
the heat exchanger part is provided with a first-stage plate heat exchanger and a second-stage plate heat exchanger, the deaerator is connected with the first-stage plate heat exchanger through a deaerator flash steam pipeline, the first-stage plate heat exchanger is then connected with the second-stage plate heat exchanger, the tail end of the second-stage plate heat exchanger is provided with an outer discharge pipeline, the lower part of the first-stage plate heat exchanger is provided with a heat exchanger condensate pipe, and the heat exchanger condensate pipe is connected to the interior of the deaerator;
the soft water system part comprises a soft water tank and a soft water pipeline, the soft water pipeline is connected with a primary soft water supply electric valve, the primary soft water supply electric valve is connected with a primary soft water inlet pipeline, soft water of the primary soft water inlet pipeline enters into a primary soft water outlet pipeline after heat exchange of the secondary plate heat exchanger, and the primary soft water outlet pipeline is connected to the soft water tank.
Optionally, the boiler section is further provided with a secondary economizer connected between the primary economizer and the boiler feedwater pump.
Optionally, the boiler section further comprises a sub-cylinder; a boiler stop valve is arranged between the boiler body and the branch cylinder, steam of the branch cylinder is conveyed to the pressure reducer through a steam branch pipeline, a front end valve of the pressure reducer and a rear end valve of the pressure reducer are arranged in front of and behind the pressure reducer, and the steam of the branch cylinder is connected to the deaerator through the tail end of the steam branch pipeline.
Optionally, the deaerator of deaerator part is provided with the blowdown pond, and the blowdown pond is connected through deaerator blowdown motorised valve, is provided with deaerator flash distillation vapour pipeline above the deaerator, is provided with flash distillation vapour pipeline motorised valve on the deaerator flash distillation vapour pipeline.
Optionally, the soft water tank is connected with the soft water feed pump inlet, the soft water feed pump outlet and the secondary soft water inlet pipeline, a secondary soft water feed electric valve is arranged on the secondary soft water inlet pipeline, soft water of the secondary soft water inlet pipeline enters the secondary soft water outlet pipeline after heat exchange of the primary plate heat exchanger, and the tail end of the secondary soft water outlet pipeline is connected with the deaerator;
optionally, a deaerator overflow pipe is arranged between the soft water tank and the deaerator, and an overflow pipe electric valve is arranged on the deaerator overflow pipe.
Compared with the prior art, the utility model has the beneficial effects that:
1. soft water enters the soft water tank after primary heating through the secondary plate heat exchanger by absorbing partial waste heat of flash steam of the deaerator, and the soft water after primary heating exchanges heat through the primary heat exchanger, enters the deaerator after absorbing most of the waste heat of the flash steam of the deaerator, so that the waste heat of the flash steam of the deaerator is fully utilized, and the waste heat recovery effect is good.
2. Because the flash steam unit temperature is still higher after the soft water passes through the heat transfer of first-level plate heat exchanger, after the abundant heat transfer of second grade plate heat exchanger, the temperature of flash steam is lower, can make full use of the heat of flash steam, and secondly the soft water has passed through the secondary heating, and the soft water temperature is higher, and it is less to get into the steam that the deoxidizer deoxidized heating was used, can reduce the steam total consumption of deoxidizer, has equivalent to the steam heat who has got into the deoxidizer completely, and waste heat recovery efficiency is high.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be briefly described below.
FIG. 1 is a schematic diagram of a boiler deoxygenation box waste heat recovery and boiler system of the present utility model;
reference numerals: 1 boiler, 101 primary energy saver, 102 secondary energy saver, 103 boiler feed water pipeline, 104 boiler feed water pump, 105 feed water electric valve, 106 boiler stop valve, 107 steam main pipeline, 108 branch cylinder, 109 reducer front end valve, 110 reducer, 111 reducer rear end valve, 112 steam branch pipeline; 2 deaerators, 201 deaerator blowdown electric valves, 202 blowdown tanks, 203 deaerator flash steam pipelines, 204 flash steam pipeline electric valves; 301 heat exchanger condensate pipe, 302 primary plate heat exchanger, 303 secondary plate heat exchanger, 304 outer exhaust pipeline; the device comprises a soft water tank 4, a soft water pipeline 401, a first-stage soft water supply electric valve 402, a first-stage soft water inlet pipeline 403, a first-stage soft water outlet pipeline 404, a soft water supply pump 405, a second-stage soft water supply electric valve 406, a second-stage soft water inlet pipeline 407, a second-stage soft water outlet pipeline 408, a deaerator overflow pipe 409 and an overflow pipe 410 electric valve.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "inner", "front", "rear", "left", "right", etc., are based on directions or positional relationships shown in the drawings, or directions or positional relationships in which the inventive product is conventionally put in use, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1, the boiler section includes a boiler body 1, a primary economizer 101, a secondary economizer 102, a boiler feed water pipe 103, a boiler feed water pump 104, a feed water electric valve 105, a boiler shut-off valve 106, a steam main pipe 107, a branch cylinder 108, a pressure reducer front end valve 109, a pressure reducer 110, a pressure reducer rear end valve 111, and a steam branch pipe 112; a primary energy economizer 101 and a secondary energy economizer 102 are arranged on the boiler body 1 and are used for carrying out heating treatment on soft water; the deaerator 2 is connected with a water supply electric valve 105, the opening of the electric valve 105 can be controlled according to the water consumption of a boiler, the water supply electric valve 105 is connected to a boiler water supply pump 104 through a boiler water supply pipeline 103, softened water of the boiler water supply pump 104 enters the secondary energy saver 102 through the boiler water supply pipeline 103 to be heated for the first time, soft water heated by the secondary energy saver 102 enters the primary energy saver 101 to be heated for the second time, soft water heated by the primary energy saver 101 enters the boiler body 1, and steam is generated in the boiler body 1 to be used by other steam departments.
Further, the boiler body 1 and the branch cylinder 108 are connected through a total steam pipeline 107, the total steam pipeline 107 is connected with a boiler stop valve 106, the boiler stop valve 106 is used for adjusting steam flow, steam generated in the boiler body 1 is conveyed into the branch cylinder 108 through the total steam pipeline 107, and the branch cylinder 108 plays a role in storing steam; the steam in the sub-cylinder 108 is decompressed in the pressure reducer 110 through the steam sub-pipeline 112, and the steam decompressed by the pressure reducer 110 enters the deoxidizing box through the steam sub-pipeline 112 to heat and deoxidize the soft water. The pressure reducer 110 is provided with a pressure reducer front end valve 109 and a pressure reducer rear end valve 111, and the pressure reducer front end valve 109 and the pressure reducer rear end valve 111 are used for maintenance of the pressure reducer 110.
In the preferred embodiment, the deaerator 2 is provided with a blowdown tank 202, the blowdown tank 202 is used for collecting impurities in the deaerator 2, the blowdown tank 202 is connected through a deaerator blowdown electric valve 201, the deaerator blowdown electric valve 201 can set periodic discharge time, deaerator flash steam pipelines 203 are arranged on the deaerator 2 by periodic discharge of impurities in the deaerator 2, the deaerator flash steam pipelines 203 are connected to a primary plate heat exchanger 302, and flash steam pipeline electric valves 204 are arranged on the deaerator flash steam pipelines 203; the opening degree of the flash steam pipeline electric valve 204 can be adjusted, and the size of flash steam can be controlled.
It will be appreciated that, of course, the heat exchanger part is provided with a primary plate heat exchanger 302 and a secondary plate heat exchanger 303, the deaerator 2 is connected with the primary plate heat exchanger 302 through a deaerator flash steam pipeline 203, after the flash steam is subjected to most heat exchange through the primary plate heat exchanger 302, the flash steam is subjected to further heat exchange through the secondary plate heat exchanger 303, the primary plate heat exchanger 302 is then connected with the secondary plate heat exchanger 303, the tail end of the secondary plate heat exchanger 303 is provided with an external exhaust pipeline 304, and the residual heat of the flash steam after the two heat exchanges is discharged by the external exhaust pipeline 304; a heat exchanger condensate pipe 301 is arranged below the primary plate heat exchanger 303, and condensate generated after soft water passes through a secondary heat exchanger enters the deaerator 2 for reasonable utilization after passing through the heat exchanger condensate pipe 301;
in a preferred embodiment, the soft water system part comprises a soft water tank 4, a soft water pipeline 401, a primary soft water feed electric valve 402, a primary soft water inlet pipeline 403, a primary soft water outlet pipeline 404, a soft water feed pump 405, a secondary soft water feed electric valve 406, a secondary soft water inlet pipeline 407, a secondary soft water outlet pipeline 408, a deaerator overflow pipe 409, and an overflow pipe electric valve 410; the soft water pipeline 401 of soft water system connects one-level soft water electric valve 402, after the soft water of process water softener passes through soft water pipeline 401, enter into one-level soft water intake pipe 403, one-level soft water electric valve 402 connects one-level soft water intake pipe 403, one-level soft water electric valve 402 can adjust the inflow of one-level soft water intake pipe 403, can control heat transfer temperature through controlling inflow, the soft water of one-level soft water intake pipe 403 enters into one-level soft water outlet pipe 404 after the heat transfer of second grade plate heat exchanger 303, one-level soft water outlet pipe 404 end-to-end connection is to soft water tank 4, the soft water after primary heat transfer enters into soft water tank 4.
Optionally, the soft water of primary heat transfer in the soft water tank 4 enters into the secondary soft water intake pipe 407 under the effect of soft water feed pump 405, be provided with the secondary soft water feed motor valve 406 above the secondary soft water intake pipe 407, the size of soft water flow can be controlled to the secondary soft water feed motor valve 406, through the aperture of secondary soft water feed motor valve 406, can control the heat transfer temperature of soft water, the soft water of primary heat transfer in the secondary soft water intake pipe 407 enters into the secondary soft water outlet pipe 408 after the heat transfer of primary plate heat exchanger 302, the soft water of passing through the heat transfer again enters into the deoxidizer 2 through the secondary soft water outlet pipe 408 and carries out degree of depth deoxidization heating.
Still more, be provided with the deaerator overflow pipe 409 between soft water tank 4 and deaerator 2, be provided with overflow pipe motorised valve 410 above deaerator overflow pipe 409, when soft water tank 4 water level exceeded the setting value, soft water in soft water tank 4 can enter into deaerator 2 the inside through deaerator overflow pipe 409 between exchange heat, and the speed that soft water in soft water tank 4 entered into deaerator 2 can be controlled to overflow pipe motorised valve 410, and the speed that soft water in soft water tank 4 entered into deaerator 2 can be adjusted through the aperture of overflow pipe motorised valve 410.
Claims (6)
1. The utility model provides a boiler deoxidization case waste heat recovery system which characterized in that: the device comprises a boiler part, a deaerator part, a heat exchanger part and a soft water system part;
the boiler part comprises a boiler body (1), and a primary energy saver (101) is arranged on the boiler body (1); the deaerator part comprises a deaerator (2), the deaerator (2) is connected with a water supply electric valve (105), the water supply electric valve (105) is connected to a boiler water supply pump (104) through a boiler water supply pipeline (103), the boiler water supply pump (104) is connected to a primary energy saver (101) through the boiler water supply pipeline (103), and the primary energy saver (101) is connected to the boiler body (1);
the heat exchanger part is provided with a primary plate heat exchanger (302) and a secondary plate heat exchanger (303), the deaerator (2) is connected with the primary plate heat exchanger (302) through a deaerator flash evaporation steam pipeline (203), the primary plate heat exchanger (302) is then connected with the secondary plate heat exchanger (303), the tail end of the secondary plate heat exchanger (303) is provided with an outer exhaust pipeline (304), the lower part of the primary plate heat exchanger (302) is provided with a heat exchanger condenser pipe (301), and the heat exchanger condenser pipe (301) is connected to the inside of the deaerator (2);
the soft water system part comprises a soft water tank (4) and a soft water pipeline (401), the soft water pipeline (401) is connected with a primary soft water supply electric valve (402), the primary soft water supply electric valve (402) is connected with a primary soft water inlet pipeline (403), soft water of the primary soft water inlet pipeline (403) enters a primary soft water outlet pipeline (404) after being subjected to heat exchange by a secondary plate type heat exchanger (303), and the primary soft water outlet pipeline (404) is connected to the soft water tank (4).
2. The boiler deoxygenation box waste heat recovery system of claim 1, wherein: the boiler section is also provided with a secondary economizer (102), the secondary economizer (102) being connected between the primary economizer (101) and the boiler feedwater pump (104).
3. The boiler deoxygenation box waste heat recovery system of claim 1, wherein: the boiler section further comprises a sub-cylinder (108); a boiler stop valve (106) is arranged between the boiler body (1) and the branch cylinder (108), steam of the branch cylinder (108) is conveyed to the pressure reducer (110) through a steam branch pipeline (112), a pressure reducer front end valve (109) and a pressure reducer rear end valve (111) are arranged in front of and behind the pressure reducer (110), and the steam of the branch cylinder (108) is connected to the deaerator (2) through the tail end of the steam branch pipeline (112).
4. The boiler deoxygenation box waste heat recovery system of claim 1, wherein: deaerator (2) of deaerator part is provided with blowdown pond (202), and blowdown pond (202) are connected through deaerator blowdown motorised valve (201), and deaerator flash distillation vapour pipeline (203) are provided with above deaerator (2), are provided with flash distillation vapour pipeline motorised valve (204) on deaerator flash distillation vapour pipeline (203).
5. The boiler deoxygenation box waste heat recovery system of claim 1, wherein: the soft water tank (4) is connected with the soft water feed pump (405) inlet, the soft water feed pump (405) outlet and the secondary soft water inlet pipeline (407), the secondary soft water inlet pipeline (407) is provided with a secondary soft water feed electric valve (406), soft water of the secondary soft water inlet pipeline (407) enters into the secondary soft water outlet pipeline (408) after heat exchange of the primary plate heat exchanger (302), and the tail end of the secondary soft water outlet pipeline (408) is connected with the deaerator (2).
6. The boiler deoxygenation box waste heat recovery system of claim 1, wherein: a deaerator overflow pipe (409) is arranged between the soft water tank (4) and the deaerator (2), and an overflow pipe electric valve (410) is arranged on the deaerator overflow pipe (409).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223569541.5U CN219177686U (en) | 2022-12-30 | 2022-12-30 | Waste heat recovery system of deoxidizing box of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223569541.5U CN219177686U (en) | 2022-12-30 | 2022-12-30 | Waste heat recovery system of deoxidizing box of boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219177686U true CN219177686U (en) | 2023-06-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223569541.5U Active CN219177686U (en) | 2022-12-30 | 2022-12-30 | Waste heat recovery system of deoxidizing box of boiler |
Country Status (1)
| Country | Link |
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| CN (1) | CN219177686U (en) |
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2022
- 2022-12-30 CN CN202223569541.5U patent/CN219177686U/en active Active
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