CN109323264B - process for recovering and drying raw garbage by waste heat of garbage incineration boiler and flue gas dust remover - Google Patents
process for recovering and drying raw garbage by waste heat of garbage incineration boiler and flue gas dust remover Download PDFInfo
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- CN109323264B CN109323264B CN201811051806.8A CN201811051806A CN109323264B CN 109323264 B CN109323264 B CN 109323264B CN 201811051806 A CN201811051806 A CN 201811051806A CN 109323264 B CN109323264 B CN 109323264B
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
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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
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
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- 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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing Of Solid Wastes (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a process for recovering and drying raw garbage by waste heat of a garbage incineration boiler and a flue gas dust remover, and aims to overcome the defects of high garbage water content, low garbage incineration heat energy utilization rate, large flue gas amount and high content of harmful particles in the flue gas. Flue gas generated after garbage incineration of the garbage incineration boiler is conveyed to a waste heat recovery device, environment fresh air is conveyed to the waste heat recovery device by a fan to be heated and heated, the heated environment fresh air enters a steam air preheater to be heated continuously, and steam is conveyed to the steam air preheater to heat the environment fresh air continuously until the environment fresh air is heated to be hot air; conveying the raw garbage to a garbage dryer by hot air to dry the raw garbage, conveying the raw garbage to the garbage dryer by a feeder, conveying the dried raw garbage to a garbage warehouse by a discharging machine, and discharging tail gas generated after the raw garbage is dried by the hot air to a bag-type dust collector and a dehydrator; the flue gas discharged by the preheating recovery device is discharged from a chimney after passing through a desulfurization and denitrification device and a flue gas dust remover.
Description
Technical Field
The invention relates to a waste incineration technology, in particular to a process for recovering and drying raw waste by waste heat of a waste incineration boiler and a smoke dust remover.
Background
the waste city wall has become one of the serious problems which troubles the urban environment development in China, the main treatment method at present is mainly landfill and incineration power generation, domestic waste mixed and collected in China generally has the defects of high water content, low heat value and the like, and the problems of low heat energy utilization rate, large combustion smoke amount, serious equipment corrosion, high content of harmful particles in smoke, environmental pollution and the like exist in the incineration power generation process.
disclosure of Invention
The invention overcomes the defects of high water content of garbage, low utilization rate of garbage incineration heat energy, large amount of flue gas and high content of harmful particles in the flue gas, and provides the process for recovering and drying the raw garbage by utilizing the waste heat of the garbage incineration flue gas and the flue gas dust remover.
in order to solve the technical problems, the invention adopts the following technical scheme: a waste incineration boiler waste heat recovery and raw garbage drying process is characterized in that smoke generated after garbage incineration of a waste incineration boiler is conveyed to a waste heat recovery device, environment fresh air is conveyed to the waste heat recovery device by a fan to be heated and heated, the heated environment fresh air enters a steam air preheater to be heated continuously, and the steam is conveyed to the steam air preheater to heat the environment fresh air continuously until the environment fresh air is heated to hot air; conveying the raw garbage to a garbage dryer by hot air to dry the raw garbage, conveying the raw garbage to the garbage dryer by a feeder, conveying the dried raw garbage to a garbage bin by a discharging machine, discharging tail gas obtained after drying the raw garbage by hot air to a bag-type dust remover and a dehydrator, and discharging saturated tail gas obtained after dust removal and dehydration treatment to the garbage bin; the flue gas discharged by the preheating recovery device is discharged from a chimney after passing through a desulfurization and denitrification device and a flue gas dust remover.
the waste incineration boiler incinerates waste, steam is generated for power generation, boiler flue gas enters the waste heat recovery device, environment fresh air conveyed by a fan is preheated, then the flue gas sequentially passes through the desulfurization and denitrification device and the flue gas dust remover and then is discharged from a chimney, harmful components and particles in the flue gas after passing through the desulfurization and denitrification device and the flue gas dust remover are adsorbed and filtered out, and the environment pollution caused by the flue gas discharged from the chimney is avoided.
Preferably, the steam air preheater is divided into two stages of heating sections to heat the fresh air in the environment, the first stage of heating section is used for heating by taking steam extracted from a steam turbine unit connected with the waste incineration boiler as a heat source, and the second stage of heating section is directly used for heating by taking main steam in the waste incineration boiler as a heat source. Be equipped with steam heating chamber in the steam air preheater, steam heating chamber installation heating pipe, steam heating intracavity is equipped with the baffle and separates into two cavitys with steam heating chamber, and the one-level heating section sets up in a cavity, and the second grade heating section sets up in another cavity. The environment fresh air is heated through the two-stage heating section, and the heating effect is good.
Preferably, the condensed water and the secondary steam generated in the steam air preheater are directly conveyed into a deaerator of the waste incineration boiler. The condensed water and the secondary steam are recycled, and the emission and the heat energy waste are reduced.
Preferably, a heat exchange cavity is arranged in the waste heat recovery device, a heat exchange coil is arranged in the heat exchange cavity, smoke generated after the waste incineration boiler incinerates the waste is communicated into the heat exchange cavity, and environment fresh air conveyed by the fan is communicated to the heat exchange coil. The waste heat recovery device has simple structure and good heat exchange effect.
A flue gas dust remover for a waste incineration boiler waste heat recovery and drying process of raw garbage comprises a filter cylinder and a spray cylinder, wherein a smoke through pipe is connected between the filter cylinder and the spray cylinder, a filter plate, a filter room and a filter block are sequentially arranged in the filter cylinder from bottom to top, the filter plate is obliquely arranged, and a plurality of filter slot holes are formed in the filter plate; the filtering room is of a conical structure with a small upper part and a large lower part, the filtering room comprises a framework and a filtering wall formed by a plurality of filtering tiles which are overlapped together, the upper edge of each filtering tile is hinged on the framework, and filtering pores are arranged on the filtering tiles; the spray cylinder is internally provided with a spray pipe, the spray pipe is provided with a plurality of spray heads, the lower end of the spray cylinder is communicated with a water storage tank, a water supply pump is connected between the water storage tank and the spray pipe, a water mist collecting plate is arranged at a position close to the upper end in the spray cylinder, and the upper end of the spray cylinder is communicated with a chimney.
The flue gas flows into the filter cylinder firstly, and flows into the spray cylinder from the smoke through pipe after being filtered by the filter plate, the filter house and the filter block in sequence, the sprinkler bead sprays water to further remove harmful components and impurity particles in the flue gas, and finally the flue gas passes through the water mist collecting plate and then flows to the smoke scrubber. Filter the flue gas on the filter, later the flue gas is through filtering the room, and the filtration pore pair flue gas on the filtration shingle is further filtered, because the filtration shingle top edge articulates on the skeleton, and the flue gas can be with filtering the upward jack-up of shingle, makes to filter the shingle and can shake constantly from top to bottom, and shake the in-process striking each other from top to bottom to will remain the impurity shake on filtering the shingle and get off, prevent impurity deposition, block up even and filter the pore. The flue gas enters the spray pipe after being further filtered by the filter block, and the water supply pump works to enable water flow to be sprayed out from the water spray head to clean the flue gas. The flue gas dust remover that sets up through this kind of structure removes dust to the flue gas operation, greatly reduced the harmful particle content in the flue gas, avoid the fume emission polluted environment, be difficult for appearing impurity deposit moreover in the use and block up the phenomenon of filtering the shingle.
Preferably, the linkage rod is slidably mounted on the lower surface of the filter plate, each filtering slot hole corresponds to a scraping strip, the cross section of each scraping strip is triangular, and the scraping strips are attached to the lower surface of the filter plate and are connected with the linkage rod; the filter cartridge is provided with a filter plate, the lower part of the filter plate is communicated with a smoke inlet pipe, a rotating shaft is arranged in the smoke inlet pipe, a plurality of driving blades which are blown by smoke to rotate are uniformly distributed and arranged on the rotating shaft, a fixed connecting rod is fixedly connected to the outer wall of the rotating shaft, a guide groove is arranged in the filter cartridge, a pushing block is slidably arranged in the guide groove, a push rod is fixedly connected between the pushing block and a linkage rod, and a connecting rod is hinged between the.
Flue gas gets into the tobacco pipe and drives the driving vane and rotate, thereby the pivot rotates along with driving vane and passes through the dead lever, the connecting rod drives the promotion piece slides in the guide slot, through push rod fixed connection between promotion piece and the gangbar, consequently the gangbar moves along with the promotion piece to the strip is scraped to the messenger, filters on the filter slotted hole lower extreme opening position remaining impurity and strikes off, avoids arousing filter tank hole blocking phenomenon.
Preferably, the lower end edge of the filter plate is provided with a slag discharging hole, the top cover is covered at the upper end of the slag discharging hole, the top cover is connected with a guide rod, the guide rod is slidably mounted on the wall of the slag discharging hole, the lower end of the guide rod is provided with a guide block, the lower end of the linkage rod is close to the lower surface of the guide block, and the lower surface of the guide block is arranged in a downward inclined mode towards the direction far away from the linkage rod.
The slope sets up and rolls to lower end at the filter great impurity of being convenient for, promotes the guide block rebound when the gangbar is gliding, upwards jacks up the top cap and opens down the sediment hole, and impurity falls from sediment hole down, prevents that the filter upper surface deposit is more impurity and the jam phenomenon appears.
Preferably, the filter block comprises an upper plate, a lower plate and activated carbon arranged between the upper plate and the lower plate, and a plurality of vent holes are densely distributed on the upper plate and the lower plate. The active carbon can effectively adsorb harmful ingredients in the smoke.
Preferably, the lower end of the filter cartridge is of a cone-shaped structure with a large upper part and a small lower part, the lower end of the filter cartridge is provided with a cleaning hole, and the cleaning hole is connected with a sealing cover. This kind of structural arrangement is convenient for clear up the cartridge filter.
Compared with the prior art, the invention has the beneficial effects that: the waste gas afterheat of the waste incineration is used for drying the raw waste, the water content of the waste is reduced, the heat value of the waste incineration is favorably improved, the emission of the smoke gas is reduced, meanwhile, the smoke gas is filtered and dedusted, the content of harmful particles in the smoke gas is greatly reduced, and the environment pollution caused by the emission of the smoke gas is avoided.
Drawings
FIG. 1 is a process diagram of the present invention;
FIG. 2 is a schematic structural view of a flue gas dust collector of the present invention;
FIG. 3 is an enlarged partial schematic view of the lower end position of the filter plate of the present invention;
FIG. 4 is a schematic view of the structure of the position of the smoke inlet pipe on the filter cartridge of the present invention;
FIG. 5 is an enlarged, fragmentary view of the location of the channels in the filter cartridge of the present invention;
In the figure: 1. a garbage incineration boiler, 2, a waste heat recovery device, 3, a fan, 4, a steam air preheater, 5, a garbage dryer, 6, a feeder, 7, a discharging machine, 8, a bag-type dust collector, 9, a dehydrator, 10, a desulfurization and denitrification device, 11, a flue gas dust collector, 12, a chimney, 13, a filter cylinder, 14, a spray cylinder, 15, a smoke through pipe, 16, a filter plate, 17, a filter house, 18, a filter block, 19, a filter slotted hole, 20, a filter tile, 21, a spray pipe, 22, a water spray head, 23, a water storage tank, 24, a water supply pump, 25, a water mist collecting plate, 26, a linkage rod, 27, a scraping strip, 28, a smoke inlet pipe, 29, a rotating shaft, 30, a driving blade, 31, a fixing rod, 32, a guide groove, 33, a pushing block, 34, a push rod, 35, a connecting rod, 36, a slag discharge hole, 37, a top cover, 38, a guide rod, 39, a guide block, 40, And (7) sealing the cover.
Detailed Description
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
example (b): a waste incineration boiler waste heat recovery dries the original rubbish craft (refer to fig. 1 to fig. 5), the smoke produced after the waste incineration of the waste incineration boiler 1 is conveyed to the waste heat recovery device 2, the blower 3 conveys the environment new trend into the waste heat recovery device to heat and raise the temperature to 90-110 degrees centigrade, the environment new trend after heating enters the steam air preheater 4 to continue heating, the steam is conveyed to the steam air preheater to continue heating the environment new trend to heat the hot air above 200 degrees centigrade; conveying hot air to a garbage dryer 5 to dry raw garbage, conveying the crushed raw garbage to the garbage dryer by a feeder 6, conveying the dried raw garbage to a garbage bin by a discharging machine 7, discharging tail gas after drying the raw garbage by the hot air to a bag-type dust remover 8 and a dehydrator 9, discharging saturated tail gas after dust removal and dehydration treatment to the garbage bin, discharging condensate water generated by the dehydrator to a garbage leachate filter tank, and cooling the tail gas by the dehydrator by using natural air to remove water in the tail gas; the flue gas discharged from the preheating recovery device passes through a desulfurization and denitrification device 10 and a flue gas dust remover 11 and then is discharged from a chimney 12. The steam air preheater is divided into two stages of heating sections to heat the environment fresh air, the first stage of heating section is used for heating as a heat source by extracting steam from a steam turbine set connected with the waste incineration boiler, and the second stage of heating section is used for heating by directly using main steam in the waste incineration boiler as a heat source. Be equipped with steam heating chamber in the steam air preheater, steam heating chamber installation heating pipe, steam heating intracavity is equipped with the baffle and separates into two cavitys with steam heating chamber, and the one-level heating section sets up in a cavity, and the second grade heating section sets up in another cavity. Condensed water and secondary steam generated in the steam air preheater are directly conveyed into a deaerator of the waste incineration boiler. Be equipped with the heat transfer chamber in the waste heat recovery device, install the heat transfer coil pipe in the heat transfer chamber, the flue gas that produces behind the msw incineration boiler incineration rubbish communicates the heat transfer intracavity, and the environment new trend that the fan was carried out communicates the heat transfer coil pipe.
A flue gas dust remover for a waste heat recovery and drying process of raw garbage of a garbage incineration boiler comprises a filter cylinder 13 and a spray cylinder 14, wherein a smoke through pipe 15 is connected between the filter cylinder and the spray cylinder, a filter plate 16, a filter room 17 and a filter block 18 are sequentially arranged in the filter cylinder from bottom to top, the filter plate is obliquely arranged, and a plurality of filter slot holes 19 are formed in the filter plate; the filtering room is in a conical structure with a small upper part and a large lower part, the filtering room comprises a framework and a filtering wall formed by a plurality of filtering tile plates 20 which are overlapped together, the upper edges of the filtering tile plates are hinged on the framework, and filtering pores are arranged on the filtering tile plates; the spray cylinder is internally provided with a spray pipe 21, the spray pipe is provided with a plurality of spray heads 22, the lower end of the spray cylinder is communicated with a water storage tank 23, a water supply pump 24 is connected between the water storage tank and the spray pipe, a water mist collecting plate 25 is arranged at a position close to the upper end in the spray cylinder, and the upper end of the spray cylinder is communicated with a chimney. The lower surface of the filter plate is slidably provided with a linkage rod 26, each filtering slot hole corresponds to a scraping strip 27, the cross section of each scraping strip is triangular, and the scraping strips are attached to the lower surface of the filter plate and are connected with the linkage rod; the lower part of the filter plate on the filter cartridge is communicated with a smoke inlet pipe 28, a rotating shaft 29 is arranged in the smoke inlet pipe, a plurality of driving blades 30 which are blown to rotate by smoke are uniformly arranged on the rotating shaft, a fixed rod 31 is fixedly connected on the outer wall of the rotating shaft, a guide groove 32 is arranged in the filter cartridge, a pushing block 33 is arranged in the guide groove in a sliding way, a push rod 34 is fixedly connected between the pushing block and a linkage rod, and a connecting rod 35 is hinged between the pushing block and the fixed rod. The lower end edge of the filter plate is provided with a slag discharging hole 36, the upper end cover of the slag discharging hole is closed with a top cover 37, the top cover is connected with a guide rod 38, the guide rod is slidably mounted on the hole wall of the slag discharging hole, the lower end of the guide rod is provided with a guide block 39, the lower end of the linkage rod is close to the lower surface of the guide block, and the lower surface of the guide block is arranged in a downward inclined mode towards the direction far away from the linkage rod. The filter block comprises an upper plate, a lower plate and active carbon arranged between the upper plate and the lower plate, and a plurality of vent holes are densely distributed on the upper plate and the lower plate. The lower end of the filter cartridge is of a cone-shaped structure with a large upper part and a small lower part, the lower end of the filter cartridge is provided with a cleaning hole 40, and a sealing cover 41 is connected to the cleaning hole.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (3)
1. A flue gas dust remover for a waste incineration boiler waste heat recovery and drying process of raw garbage is characterized by comprising a filter cylinder and a spray cylinder, wherein a smoke through pipe is connected between the filter cylinder and the spray cylinder, a filter plate, a filter house and a filter block are sequentially arranged in the filter cylinder from bottom to top, the filter plate is obliquely arranged, and a plurality of filter slot holes are formed in the filter plate; the filtering room is of a conical structure with a small upper part and a large lower part, the filtering room comprises a framework and a filtering wall formed by a plurality of filtering tiles which are overlapped together, the upper edge of each filtering tile is hinged on the framework, and filtering pores are arranged on the filtering tiles; a spray pipe is arranged in the spray cylinder, a plurality of spray heads are arranged on the spray pipe, the lower end of the spray cylinder is communicated with a water storage tank, a water supply pump is connected between the water storage tank and the spray pipe, a water mist collecting plate is arranged in the spray cylinder at a position close to the upper end of the spray cylinder, and the upper end of the spray cylinder is communicated with a chimney; the linkage rod is slidably mounted on the lower surface of the filter plate, each filtering slot hole corresponds to a scraping strip, the section of each scraping strip is triangular, and the scraping strips are attached to the lower surface of the filter plate and are connected with the linkage rod; the lower part of the filter plate on the filter cartridge is communicated with a smoke inlet pipe, a rotating shaft is arranged in the smoke inlet pipe, a plurality of driving blades which are blown by smoke to rotate are uniformly arranged on the rotating shaft, a fixed rod is fixedly connected to the outer wall of the rotating shaft, a guide groove is arranged in the filter cartridge, a pushing block is arranged in the guide groove in a sliding manner, a push rod is fixedly connected between the pushing block and the linkage rod, and a connecting rod is hinged between the pushing block and the fixed rod; the lower end edge on the filter is equipped with down the sediment hole, and sediment hole upper end lid has closed the top cap, connects the guide arm on the top cap, but guide arm slidable mounting is on the pore wall in sediment hole down, and the guide arm lower extreme is equipped with the guide block, and the gangbar lower extreme is close to the guide block lower surface, and the guide block lower surface sets up towards keeping away from the gangbar direction slope down.
2. The flue gas dust collector of claim 1, wherein the filter block comprises an upper plate, a lower plate, and activated carbon disposed between the upper plate and the lower plate, wherein the upper plate and the lower plate are densely provided with a plurality of vent holes.
3. The flue gas dust collector of claim 1 or 2, wherein the lower end of the filter cylinder is in a cone-shaped structure with a large upper part and a small lower part, the lower end of the filter cylinder is provided with a cleaning hole, and a sealing cover is connected to the cleaning hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811051806.8A CN109323264B (en) | 2018-09-10 | 2018-09-10 | process for recovering and drying raw garbage by waste heat of garbage incineration boiler and flue gas dust remover |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811051806.8A CN109323264B (en) | 2018-09-10 | 2018-09-10 | process for recovering and drying raw garbage by waste heat of garbage incineration boiler and flue gas dust remover |
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| CN109323264A CN109323264A (en) | 2019-02-12 |
| CN109323264B true CN109323264B (en) | 2019-12-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110274486B (en) * | 2019-07-24 | 2023-12-05 | 江阴德耐特重工科技有限公司 | A cement kiln heat exchanger tube box |
| CN111237776A (en) * | 2020-01-08 | 2020-06-05 | 嘉兴久华环保设备科技有限公司 | Sludge drying and incinerating closed cycle device |
| CN112797396B (en) * | 2020-12-30 | 2021-12-28 | 西安交通大学 | A high moisture biomass fuel power generation system and operation method |
| CN112843899A (en) * | 2021-01-18 | 2021-05-28 | 瑞康(广州)实业有限公司 | Tail gas filter equipment of msw incineration |
| CN114870582A (en) * | 2022-06-06 | 2022-08-09 | 连云港虹洋热电有限公司 | Steam boiler tail gas desulfurization system for waste incineration power generation |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3745939A (en) * | 1971-11-10 | 1973-07-17 | W Allbritton | Effluent cleaner for trash-burning |
| CN1190179A (en) * | 1998-01-23 | 1998-08-12 | 朱平生 | Garbage drying method using preheated air |
| CN105948459A (en) * | 2016-05-19 | 2016-09-21 | 山东齐盛机电工程有限公司 | Method using drying and incineration to treat sludge |
| CN205783029U (en) * | 2016-06-14 | 2016-12-07 | 惠州市尧邦环保科技有限公司 | Environment-friendly boiler emission-control equipment |
| CN207187382U (en) * | 2017-08-10 | 2018-04-06 | 南通苏润环保科技有限公司 | A kind of flue gas spray equipment |
| CN108006655A (en) * | 2017-11-23 | 2018-05-08 | 中材节能股份有限公司 | A kind of hot air circulation garbage dewatering device |
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