CN111735059A - Waste incineration chain furnace with front dehumidification system for improving air supply temperature - Google Patents
Waste incineration chain furnace with front dehumidification system for improving air supply temperature Download PDFInfo
- Publication number
- CN111735059A CN111735059A CN202010412744.XA CN202010412744A CN111735059A CN 111735059 A CN111735059 A CN 111735059A CN 202010412744 A CN202010412744 A CN 202010412744A CN 111735059 A CN111735059 A CN 111735059A
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- China
- Prior art keywords
- furnace
- chain
- heat exchanger
- air supply
- temperature
- 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.)
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Links
- 238000007791 dehumidification Methods 0.000 title claims abstract description 13
- 238000004056 waste incineration Methods 0.000 title description 3
- 239000000779 smoke Substances 0.000 claims abstract description 33
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000009423 ventilation Methods 0.000 claims description 15
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 11
- 239000003546 flue gas Substances 0.000 abstract description 11
- 238000002485 combustion reaction Methods 0.000 abstract description 10
- 238000004939 coking Methods 0.000 abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/002—Incineration of waste; Incinerator constructions; Details, accessories or control therefor characterised by their grates
- F23G5/004—Incineration of waste; Incinerator constructions; Details, accessories or control therefor characterised by their grates with endless travelling grates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/10—Drying by heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2203/00—Furnace arrangements
- F23G2203/105—Furnace arrangements with endless chain or travelling grate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a chain furnace for incinerating garbage, which is provided with a front-mounted dehumidification system and used for improving the air supply temperature, and comprises a furnace body, a heat exchanger, a condensate discharge pipe and an induced draft fan, and is characterized in that: the heat exchanger is and presss from both sides the cover form, and the cold medium runner of heat exchanger is the straight tube form and sets up on the inlet pipe of chain furnace, and the hot medium runner of heat exchanger is to press from both sides the cover form set up in the cold medium runner outside, the furnace chamber intercommunication of smoke return pipe and chain furnace front arch department is passed through to the entry of hot medium runner, the export of hot medium runner pass through the blast pipe with the draught fan is connected, the vent chamber of exit linkage chain bottom of the furnace portion of draught fan, the water delivery pipe that congeals sets up in the last lower of hot medium runner position. Compared with the prior art, the invention has the following advantages: aiming at the municipal refuse with large water content, the coking of the refuse or combustion products can be avoided, the air supply temperature of the chain furnace is increased, and the flue gas temperature and the combustion efficiency are improved.
Description
Technical Field
The invention relates to the technical field of chain boilers, in particular to a chain furnace with a front-mounted dehumidification system for improving air supply temperature.
Background
The garbage incinerator is basically a chain furnace with high operation stability and reliability due to the reasons of impurity of garbage components, difficult crushing and the like.
However, when burning garbage with high water content, the burning process can cause the garbage or burning products to coke, which leads to the jamming of the traveling grate and even the furnace shutdown. Meanwhile, the combustion temperature and the combustion efficiency are reduced due to the heat absorption of the moisture, so that the problem of waste incineration with high water content is urgently solved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a chain furnace for incinerating garbage, which is provided with a front-mounted dehumidification system and is used for improving the air supply temperature.
The invention is realized by the following technical scheme: the utility model provides a msw incineration chain furnace with leading dehumidification system improves air supply temperature, includes furnace body, heat exchanger, condensate discharge pipe and draught fan, its characterized in that: the heat exchanger is and presss from both sides the cover form, and the cold medium runner of heat exchanger is the straight tube form and sets up on the inlet pipe of chain furnace, and the hot medium runner of heat exchanger is to press from both sides the cover form set up in the cold medium runner outside, the furnace chamber intercommunication of smoke return pipe and chain furnace front arch department is passed through to the entry of hot medium runner, the export of hot medium runner pass through the blast pipe with the draught fan is connected, the vent chamber of exit linkage chain bottom of the furnace portion of draught fan, the water delivery pipe that congeals sets up in the last lower of hot medium runner position.
As a further improvement to the scheme, the blast pipe is communicated with the first ventilation bin at the foremost part of the bottom of the chain furnace. The first ventilation bin is positioned on one side of the feeding upstream of the bottom of the chain furnace, smoke from the outlet of the heat exchanger still has partial residual temperature, the temperature of the smoke is higher than the air temperature, the smoke is sent into the first ventilation bin of the chain furnace through the air supply pipe, and the air supply temperature of the chain furnace can be improved.
As a further improvement to the above scheme, a moisture trapping fin is provided in the heat medium flow passage of the heat exchanger, and the moisture trapping fin extends from the outer wall of the cold medium flow passage to the inner wall of the heat medium flow passage.
As a further improvement of the scheme, the length of the water trapping fins extending out of the outer wall of the cold medium flow passage of the heat exchanger is 10cm, and 8 rows of water trapping fins are arranged in the heat exchanger.
As a further improvement of the scheme, the furnace body is provided with a smoke return hole, the smoke return pipe is communicated with the inner cavity of the furnace body through the smoke return hole, and the smoke return hole is arranged in the middle position above the front arch and is a rectangular hole of 10cm multiplied by 10 cm.
As a further improvement of the above scheme, the center of the bottom of the heat medium flow passage of the heat exchanger is raised upwards along the axis, the cold medium flow passage is arranged on the raised part, the condensed water discharge pipe is arranged at the low-lying positions at the two sides of the raised part, and the smoke return pipe and the air supply pipe are both connected with the lower half parts of the two side walls of the heat medium flow passage.
As a further improvement to the above scheme, the condensed water discharge pipe is in a U-shaped design, and the inner diameter of the condensed water discharge pipe is 5 cm.
Compared with the prior art, the invention has the following advantages: after the smoke returning pipe absorbs a part of moisture content in the smoke, the moisture content in the smoke is reduced, the smoke temperature and the combustion efficiency can be improved, particularly for municipal garbage with large moisture content, numerical simulation display of a chain furnace model is carried out, and after the measure is adopted, the temperature and the combustion efficiency of a combustion area are improved, and meanwhile, the coking of garbage or combustion products is relieved to a certain extent. The flue gas after heat exchange still has partial residual temperature, and the temperature is higher than the air temperature, and the flue gas is sent into the first ventilation bin of the chain furnace through the blast pipe, so that the blast temperature of the chain furnace can be increased. Although the oxygen content in the flue gas is small, the first ventilation bin aims at drying and preheating the garbage, the requirement on the oxygen content of the air is not high, and the result of numerical simulation according to a chain furnace model shows that the flue gas fed into the first ventilation bin has no influence on garbage combustion. The even welded arrangement of 8 rows of fins in inside rubbish conveyer pipe surface of heat exchanger helps strengthening the flue gas heat transfer, condenses the moisture in the flue gas to improve the rubbish temperature to a certain extent.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a top view of the heat exchanger.
3 fig. 3 3 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 the 3 plane 3 a 3- 3 a 3 in 3 fig. 3 2 3. 3
Fig. 4 is a sectional view taken along the plane B-B in fig. 2.
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.
The utility model provides a msw incineration chain grate furnace with leading dehumidification system improves air supply temperature, includes furnace body 1, heat exchanger 2, condensate discharge pipe 7 and draught fan 3, its characterized in that: heat exchanger 2 is the clamp and presss from both sides the cover form, and heat exchanger 2's cold medium runner 22 is the straight tube form and sets up on the inlet pipe 12 of chain furnace, and heat medium runner 21 of heat exchanger 2 is to press from both sides the cover form set up in the cold medium runner 22 outside, 11 furnace chamber intercommunications of department are encircleed before smoke return pipe 4 and the chain furnace to the entry of heat medium runner 21, the export of heat medium runner 21 pass through blast pipe 5 with draught fan 3 connects, the ventilation storehouse of the exit linkage chain bottom of draught fan 3, it sets up the position minimum on heat medium runner 21 to congeal water delivery pipe 7. The front arch 11 is located at the foremost end of the furnace chamber of the chain furnace and is used for heating the material which is just fed in by utilizing the heat radiation in the furnace chamber. After the garbage enters the chain grate furnace, moisture of the garbage is evaporated below the front arch 11, a part of the smoke with high humidity is sucked by using a smoke return pipe 4 communicated with the front arch 11 and a suction force of an induced draft fan 3, the smoke is sent into the heat exchanger 2 through the smoke return pipe 4, heat exchange is participated in inside the heat exchanger 2, the moisture is condensed, the moisture after condensation is discharged through a condensation water discharge pipe 7, and the smoke with residual temperature enters the chain grate furnace through the blast pipe 5 and the ventilation bin, so that the ventilation temperature is improved. Through with the flue gas suction dewatering that the water content is high below the front arch 11, the effectual moisture content that reduces the furnace chamber has reduced the condition of rubbish burning coking, has improved the degree of stability and the work efficiency of operation when chain furnace burning rubbish.
The blast pipe 4 is communicated with a first ventilation bin 6 at the forefront part of the bottom of the chain furnace. The first ventilation bin 6 is located on one side of the feeding upstream of the bottom of the chain furnace, smoke from the outlet of the heat exchanger 2 still has partial residual temperature, the temperature of the smoke is higher than the air temperature, the smoke is sent into the first ventilation bin 6 of the chain furnace through the air supply pipe 5, and the air supply temperature of the chain furnace can be improved. Although the oxygen content in the flue gas is small, the temperature of the material at the upper part of the first ventilating bin 6 cannot reach the ignition point, the first ventilating bin 6 usually plays a role in accelerating the dissipation of water in the material, the requirement on the oxygen content of the air is not high, and the result of numerical simulation according to a chain furnace model shows that the flue gas is sent into the first ventilating bin 6 and has no influence on garbage combustion.
A moisture trapping rib 23 is provided in the heat medium flow passage 21 of the heat exchanger 2, and the moisture trapping rib 23 extends from the outer wall of the cooling medium flow passage 22 to the inner wall of the heat medium flow passage 21. The moisture capture fins 23 increase the heat transfer area while providing sufficient contact surface for the moisture in the flue gas to adhere and separate from the gas phase, thereby effectively removing the moisture.
The length of the water trapping rib 23 extending from the outer wall of the cold medium flow passage 22 of the heat exchanger 2 is 10cm, and 8 drainage water trapping ribs 23 are arranged in the heat exchanger 2.
The furnace body 1 is provided with a smoke return hole, the smoke return pipe 4 is communicated with the inner cavity of the furnace body 1 through the smoke return hole, and the smoke return hole is arranged in the middle position above the front arch 11 and is a rectangular hole of 10cm multiplied by 10 cm.
The center of the bottom of a heat medium flow passage 21 of the heat exchanger 2 is raised upwards along an axis, a cold medium flow passage 22 is arranged on the raised part, condensed water discharge pipes are arranged at low-lying positions on two sides of the raised part, and the smoke return pipe 4 and the blast pipe 5 are both connected with the lower half parts of two side walls of the heat medium flow passage 21. The design can provide additional support for the cold medium flow passage 22 on one hand, and can prevent the cold medium flow passage 22 from soaking in the condensed water on the other hand.
The condensate discharge pipe 7 is designed in a U shape, and the inner diameter of the condensate discharge pipe 7 is 5 cm.
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 (7)
1. The utility model provides a msw incineration chain furnace with leading dehumidification system improves air supply temperature, includes furnace body, heat exchanger, condensate discharge pipe and draught fan, its characterized in that: the heat exchanger is and presss from both sides the cover form, and the cold medium runner of heat exchanger is the straight tube form and sets up on the inlet pipe of chain furnace, and the hot medium runner of heat exchanger is to press from both sides the cover form set up in the cold medium runner outside, the furnace chamber intercommunication of smoke return pipe and chain furnace front arch department is passed through to the entry of hot medium runner, the export of hot medium runner pass through the blast pipe with the draught fan is connected, the vent chamber of exit linkage chain bottom of the furnace portion of draught fan, the water delivery pipe that congeals sets up in the last lower of hot medium runner position.
2. The chain grate furnace for incinerating garbage, which is provided with the front-mounted dehumidification system and can increase the temperature of the air supply, as claimed in claim 1, is characterized in that: the blast pipe is communicated with a first ventilation bin at the foremost part of the bottom of the chain furnace. The first ventilation bin is positioned on one side of the feeding upstream of the bottom of the chain furnace, smoke from the outlet of the heat exchanger still has partial residual temperature, the temperature of the smoke is higher than the air temperature, the smoke is sent into the first ventilation bin of the chain furnace through the air supply pipe, and the air supply temperature of the chain furnace can be improved.
3. The chain grate furnace for incinerating garbage, which is provided with the front-mounted dehumidification system and can increase the temperature of the air supply, as claimed in claim 1, is characterized in that: and a moisture trapping rib is arranged in the heat medium flow passage of the heat exchanger and extends out from the outer wall of the cold medium flow passage to the inner wall of the heat medium flow passage.
4. The chain grate furnace for incinerating garbage and increasing the temperature of the supplied air with the front dehumidifying system as claimed in claim 3, wherein: the length of the water trapping fins extending out of the outer wall of the cold medium flow channel of the heat exchanger is 10cm, and 8 rows of water trapping fins are arranged in the heat exchanger.
5. The chain grate furnace for incinerating garbage, which is provided with the front-mounted dehumidification system and can increase the temperature of the air supply, as claimed in claim 1, is characterized in that: the smoke-returning hole is arranged on the furnace body, the smoke-returning pipe is communicated with the inner cavity of the furnace body through the smoke-returning hole, and the smoke-returning hole is arranged in the middle position above the front arch and is a rectangular hole of 10cm multiplied by 100 cm.
6. The chain grate furnace for incinerating garbage, which is provided with the front-mounted dehumidification system and can increase the temperature of the air supply, as claimed in claim 1, is characterized in that: the central part of the bottom of the heat medium flow passage of the heat exchanger is upwards bulged along the axis, the cold medium flow passage is arranged on the bulge, the condensed water discharge pipe is arranged at the low-lying position on the two sides of the bulge, and the smoke return pipe and the air supply pipe are both connected with the lower half parts of the two side walls of the heat medium flow passage.
7. The chain grate furnace for incinerating garbage, which is provided with the front-mounted dehumidification system and can increase the temperature of the air supply, as claimed in claim 1, is characterized in that: the water discharge pipe congeals is the design of U type, the internal diameter of congealing the water discharge pipe is 5 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010412744.XA CN111735059A (en) | 2020-05-15 | 2020-05-15 | Waste incineration chain furnace with front dehumidification system for improving air supply temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010412744.XA CN111735059A (en) | 2020-05-15 | 2020-05-15 | Waste incineration chain furnace with front dehumidification system for improving air supply temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111735059A true CN111735059A (en) | 2020-10-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010412744.XA Pending CN111735059A (en) | 2020-05-15 | 2020-05-15 | Waste incineration chain furnace with front dehumidification system for improving air supply temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111735059A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07332642A (en) * | 1994-06-03 | 1995-12-22 | Kubota Corp | Garbage incinerator |
| CN104359110A (en) * | 2014-11-03 | 2015-02-18 | 合肥工业大学 | Garbage incinerator with moisture stripping device |
| CN104456611A (en) * | 2014-12-05 | 2015-03-25 | 浙江省电力设计院 | Composite utilization system for waste heat of exhaust fume of boiler |
| CN204268479U (en) * | 2014-11-03 | 2015-04-15 | 合肥工业大学 | A kind of incinerator with moisture stripping off device |
| CN205261574U (en) * | 2015-11-18 | 2016-05-25 | 上海交通大学 | Return stove formula after dry section is bled and is condensed and burn burning furnace |
-
2020
- 2020-05-15 CN CN202010412744.XA patent/CN111735059A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07332642A (en) * | 1994-06-03 | 1995-12-22 | Kubota Corp | Garbage incinerator |
| CN104359110A (en) * | 2014-11-03 | 2015-02-18 | 合肥工业大学 | Garbage incinerator with moisture stripping device |
| CN204268479U (en) * | 2014-11-03 | 2015-04-15 | 合肥工业大学 | A kind of incinerator with moisture stripping off device |
| CN104456611A (en) * | 2014-12-05 | 2015-03-25 | 浙江省电力设计院 | Composite utilization system for waste heat of exhaust fume of boiler |
| CN205261574U (en) * | 2015-11-18 | 2016-05-25 | 上海交通大学 | Return stove formula after dry section is bled and is condensed and burn burning furnace |
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Application publication date: 20201002 |