CN112870903B - Cremation tail gas ecological treatment system and method - Google Patents

Cremation tail gas ecological treatment system and method Download PDF

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Publication number
CN112870903B
CN112870903B CN202110256798.6A CN202110256798A CN112870903B CN 112870903 B CN112870903 B CN 112870903B CN 202110256798 A CN202110256798 A CN 202110256798A CN 112870903 B CN112870903 B CN 112870903B
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tail gas
filtration
cremation
introducing
water
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CN112870903A (en
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袁佳
袁扩军
谭泽晶
粟桂奇
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Hunan Xiangshuiyuan Changsheng Cemetery Co ltd
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Hunan Xiangshuiyuan Changsheng Cemetery Co ltd
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06—Spray cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/84—Biological processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/88—Handling or mounting catalysts
    • B01D53/885—Devices in general for catalytic purification of waste gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G1/00—Furnaces for cremation of human or animal carcasses
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D2247/08—Means for controlling the separation process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/804—UV light
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Treating Waste Gases (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

The invention discloses a cremation tail gas ecological treatment system and method, wherein the method comprises the following steps: s10, introducing tail gas generated by a cremation machine into a water-cooled heat exchanger for cooling; s20, introducing the cooled tail gas into a bag-type dust remover for primary filtration; s30, introducing the tail gas subjected to the primary filtration into an activated carbon adsorber for secondary filtration; s40, introducing the tail gas subjected to the secondary filtration into a water curtain spray degradation device for tertiary filtration; s50, introducing the tail gas subjected to the three-stage filtration into a photoelectric active carbon composite filter for sterilization and filtration treatment. According to the technical scheme disclosed by the invention, harmful substances in the cremation tail gas can be obviously eliminated by classifying and filtering the cremation tail gas, so that the purified tail gas can be directly discharged into the atmosphere; and the high chimney is eliminated, so that psychological rejection is reduced, and the environment is beautified.

Description

Cremation tail gas ecological treatment system and method
Technical Field
The invention relates to the field of funeral and interment, in particular to a cremation tail gas ecological treatment system and method.
Background
In recent years, along with the acceleration of the funeral and interment reform steps in China, the cremation rate of remains is rapidly increased, and the problem of environmental pollution is also gradually brought into the attention of various social circles. However, the pollution control and environmental management of the industry have not received synchronous development and attention. The remains, cremation fuel, burial products, remains packages and the like can burn to generate a large amount of toxic and harmful substances such as smoke dust, sulfur dioxide, nitrogen oxides, carbon monoxide, heavy metals, dioxin and the like, and directly harm the health of funeral staff and the external environment. The funeral industry (remains cremation) has been used as one of six important industries which are parallel to the waste incineration industry, the paper industry, the steel industry, the nonferrous metal regeneration industry and the chemical industry and are used for preferentially developing dioxin emission reduction. However, the existing cremation and smoke abatement and deodorization equipment is not perfect enough, the tail gas treatment is not thorough, and a comprehensive treatment mode is lacking.
Disclosure of Invention
The invention mainly aims to provide a cremation tail gas ecological treatment system and a cremation tail gas ecological treatment method, and aims to solve the technical problems.
In order to achieve the above object, the cremation tail gas ecological treatment system provided by the present invention comprises:
the water-cooled heat exchanger is used for cooling cremation tail gas and comprises a heat exchange shell and a heat exchange tube, wherein the heat exchange tube is arranged in the heat exchange shell, the cremation tail gas is led into the inlet end of the heat exchange tube, the outlet end of the heat exchange tube is connected with the cloth bag type dust collector, cooling water is contained in the heat exchange shell, and the heat exchange shell comprises a water inlet and a water outlet;
the bag-type dust collector is used for carrying out primary filtration on the cooled tail gas and comprises an ash bucket, a filter bag and a frame body, wherein the filter bag is mounted on the frame body, the ash bucket is arranged below the filter bag, and the inlet end of the bag-type dust collector is connected with the outlet end of the water-cooled heat exchanger;
the active carbon absorber is used for carrying out secondary filtration on the tail gas after primary filtration, and the inlet end of the active carbon absorber is connected with the bag-type dust collector;
the water curtain spray degradation device is used for carrying out tertiary filtration on the tail gas after secondary filtration; the inlet end of the water curtain spray degradation device is connected with the activated carbon adsorber;
the photoelectric active carbon composite filter is used for carrying out sterilization and filtration treatment on the tail gas after three-stage filtration, and is connected with the outlet end of the water curtain spray degradation device; wherein,
the photoelectric activated carbon composite filter comprises a shell component, an air inlet component, an air outlet pipe, a purifying component and an auxiliary rotating component; the shell component comprises a shell body, a cabinet door plate covered on the side surface of the shell body and a hinge for connecting the shell body and the cabinet door plate; the air inlet assembly comprises an air inlet pipe, a mounting frame, a rotating motor and blades, wherein the air inlet pipe is arranged at one end side of the inside of the outer shell, the mounting frame is arranged in the air inlet pipe, the rotating motor is connected with the mounting frame, and the blades are connected with the rotating motor; the air outlet pipe is arranged at the other end side in the outer shell; the purification assembly comprises a mounting groove, a filter screen, a photocatalyst carrier and an ultraviolet lamp tube, wherein the mounting groove is mounted in the outer shell, the filter screen is clamped with the mounting groove, the photocatalyst carrier is mounted in the outer shell and far away from the filter screen, and the ultraviolet lamp tube is mounted in the outer shell and is adjacent to the photocatalyst carrier; the auxiliary rotating assembly comprises a fixing sheet fixed on one side of the filter screen, a rectangular sheet in contact with the fixing sheet and a fastening bolt for fixing the rectangular sheet and the fixing sheet.
Preferably, the photoelectric active carbon composite filter further comprises a connecting component, wherein the connecting component comprises a first groove formed at two ends of the photocatalyst carrier, a second groove formed at the upper surface and the lower surface of the inside of the outer shell, a first magnet inlaid in the first groove and a second magnet inlaid in the second groove.
Preferably, the cremation tail gas ecological treatment system comprises a plurality of water curtain spray degradators connected in series, wherein each water curtain spray degradator comprises a purifying tower component, a spray component, an air inlet component and a smoke detection component; wherein,
the purifying tower assembly comprises a purifying tower body, a tower top cover, a first through hole and a second through hole, wherein the purifying tower body is arranged, the tower top cover is connected to the top surface of the purifying tower body in a covering mode, the first through hole is formed in the periphery of the tower top cover, and the second through hole is formed in the top surface of the purifying tower body;
the spray assembly comprises a fixed plate arranged in the purification tower body, vent holes formed in the surface of the fixed plate, a mounting frame fixed on the top surface of the fixed plate, a spray header arranged on the mounting frame and a connecting pipe connected with the spray header and extending to the outer side of the purification tower body;
the air inlet assembly comprises a three-way air inlet pipe arranged on the bottom surface of the purifying tower body and a valve matched with the three-way air inlet pipe;
the smoke detection assembly comprises a fixed vertical rod fixed on the bottom surface of the fixed plate and a smoke detector connected with the fixed vertical rod;
the second through hole is connected with the air inlet pipe of the photoelectric activated carbon composite filter through a pipeline.
Preferably, the water curtain spray degradation device further comprises a liquid storage tank, and the liquid storage tank is connected with the connecting pipe.
Preferably, the cremation tail gas ecological treatment system comprises a primary water curtain spraying degradation device and a secondary water curtain spraying degradation device, wherein the primary water curtain spraying degradation device comprises a first liquid storage tank, the secondary water curtain spraying degradation device comprises a second liquid storage tank, water is stored in the first liquid storage tank, and biological enzyme degradation liquid is stored in the second liquid storage tank.
Preferably, the smoke detector is located at a position just midway under the fixed plate.
Preferably, the novel filter further comprises a fresh air fan, and the inlet end of the fresh air fan is connected with the air outlet pipe of the photoelectric activated carbon composite filter.
Preferably, the water-cooled heat exchanger reduces the tail gas temperature from 600 ℃ to 180 ℃.
The invention also provides a cremation tail gas ecological treatment method, which comprises the following steps:
introducing tail gas generated by the cremation machine into a water-cooled heat exchanger for cooling;
introducing the cooled tail gas into a bag-type dust remover for primary filtration;
introducing the tail gas after the primary filtration into an active carbon adsorber for secondary filtration;
introducing the tail gas subjected to the secondary filtration into a water curtain spray degradation device for tertiary filtration;
and introducing the tail gas subjected to the three-stage filtration into a photoelectric active carbon composite filter for sterilization and filtration treatment.
Preferably, after the step of introducing the tail gas after the three-stage filtration into the photoelectric activated carbon composite filter for sterilization and filtration treatment, the method further comprises the steps of:
and (3) introducing the tail gas after the sterilization and filtration treatment into a fresh air machine for purification treatment and then discharging the tail gas into the air.
In the technical scheme of the invention, the cremation tail gas ecological treatment system comprises: the device comprises a water-cooled heat exchanger, a bag-type dust remover, an activated carbon adsorber, a water curtain spray degradation device and a photoelectric activated carbon composite filter; the water-cooled heat exchanger is used for reducing the temperature of the cremation tail gas; the cloth bag type dust collector is used for carrying out primary filtration on the cooled tail gas, and the inlet end of the cloth bag type dust collector is connected with the outlet end of the water-cooled heat exchanger; the active carbon absorber is used for carrying out secondary filtration on the tail gas after primary filtration, and the inlet end of the active carbon absorber is connected with the cloth bag type dust collector; the water curtain spray degradation device is used for carrying out three-stage filtration on the tail gas after the two-stage filtration, and the inlet end of the water curtain spray degradation device is connected with the activated carbon adsorber; the photoelectric active carbon composite filter is used for sterilizing and filtering the tail gas after three-stage filtration and is connected with the outlet end of the water curtain spray degradation device. According to the invention, the cremation tail gas sequentially passes through the water-cooled heat exchanger, the bag-type dust remover, the activated carbon adsorber, the water curtain spray degradation device and the photoelectric activated carbon composite filter for grading and multiple times, so that harmful substances in the cremation tail gas can be remarkably eliminated, and the purified tail gas can be directly discharged into the atmosphere; and the chimney with high size in the conventional cremation room is eliminated, the rejection of the funeral family is reduced, and the environment is beautified.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of an ecological treatment system for cremated tail gas according to the present invention;
FIG. 2 is a schematic structural diagram of an electro-optical active carbon composite filter according to an embodiment of the present invention;
FIG. 3 is a schematic view showing an internal structure of an electro-optical active carbon composite filter according to an embodiment of the present invention;
FIG. 4 is an enlarged view of a part of the structure of FIG. 3;
FIG. 5 is a schematic diagram showing the connection of the photocatalyst carrier of FIG. 3;
FIG. 6 is a schematic diagram showing the internal structure of a water curtain spray degradation device according to an embodiment of the present invention;
FIG. 7 is an enlarged view of a portion of the structure of FIG. 6;
FIG. 8 is a flow chart of the steps of the method for ecologically treating cremated tail gas according to the invention.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.
The invention provides a cremation tail gas ecological treatment system and method.
Referring to fig. 1 to 7, in an embodiment of the invention, the cremation tail gas ecological treatment system includes: the device comprises a water-cooled heat exchanger 100, a bag-type dust remover 200, an activated carbon adsorber 300, a water curtain spray degradation device 400 and a photoelectric activated carbon composite filter 500. The water-cooled heat exchanger 100 is used for cooling cremation tail gas, the water-cooled heat exchanger 100 comprises a heat exchange shell and a heat exchange tube, the heat exchange tube is arranged in the heat exchange shell, the cremation tail gas is led into the inlet end of the heat exchange tube, the outlet end of the heat exchange tube is connected with the bag-type dust collector 200, cooling water is contained in the heat exchange shell, and the heat exchange shell comprises a water inlet and a water outlet; the bag-type dust collector 200 is used for carrying out primary filtration on the cooled tail gas, the bag-type dust collector 200 comprises an ash bucket, a filter bag and a frame body, the filter bag is mounted on the frame body, the ash bucket is arranged below the filter bag, and the inlet end of the bag-type dust collector 200 is connected with the outlet end of the water-cooled heat exchanger 100; the activated carbon adsorber 300 is used for performing secondary filtration on the tail gas after primary filtration, and the inlet end of the activated carbon adsorber 300 is connected with the bag-type dust collector 200; the water curtain spray degradation device 400 is used for performing three-stage filtration on the tail gas after the two-stage filtration, and the inlet end of the water curtain spray degradation device 400 is connected with the activated carbon adsorber 300; the photoelectric activated carbon composite filter 500 is used for sterilizing and filtering the tail gas after three-stage filtration, and the photoelectric activated carbon composite filter 500 is connected with the outlet end of the water curtain spray degradation device 400. It should be noted that, the water-cooled heat exchanger 100, the bag-type dust collector 200 and the activated carbon adsorber 300 in this embodiment are all commercially available and common environmental protection purification devices, and can be combined according to the needs, so the specific structure thereof will not be described in detail in this embodiment.
Specifically, the electro-optical activated carbon composite filter 500 includes a housing assembly 510, an air inlet assembly 520, an air outlet pipe 530, a purifying assembly 540, and an auxiliary rotating assembly 550; the housing assembly 510 includes a housing body, a cabinet door plate covering the side surface of the housing body, and a hinge connecting the housing body and the cabinet door plate; the hinge is a metal hinge; the air intake assembly 520 includes an air inlet duct 521 installed at one end side of the inside of the outer case, a mounting frame 522 installed in the air inlet duct 521, a rotary motor 523 connected to the mounting frame 522, and blades connected to the rotary motor 523; the air outlet pipe 530 is installed at the other end side of the outer housing; the purification assembly 540 comprises a mounting groove 541 mounted in the outer housing, a filter screen 542 engaged with the mounting groove 541, a photocatalyst carrier 543 mounted in the outer housing and far from the filter screen 542, and an ultraviolet lamp 544 mounted in the outer housing and adjacent to the photocatalyst carrier 543; the auxiliary rotating unit 550 is fixed to one side of the filter 542.
The photoelectric activated carbon composite filter further comprises a connecting component 560, wherein the connecting component comprises a first groove 561 formed at two ends of the photocatalyst carrier 543, a second groove 562 formed at the upper surface and the lower surface of the inner part of the outer shell, a first magnet 563 inlaid in the first groove 561 and a second magnet 564 inlaid in the second groove 562.
Preferably, the cremation tail gas ecological treatment system of an embodiment of the present invention comprises a plurality of water curtain spray degradators 400 connected in series, each of the water curtain spray degradators 400 comprising a purification tower assembly 410, a spray assembly 420, an air intake assembly 430 and a smoke detection assembly; wherein, the purifying tower assembly 410 comprises a purifying tower body 411, a tower top cover 412 covering the top surface of the purifying tower body 411, a first through hole 413 arranged on the periphery of the tower top cover 412, and a second through hole 414 arranged on the top surface of the purifying tower body 411; the spray assembly 420 comprises a fixing plate 421 arranged in the purifying tower body 411, a vent hole formed in the surface of the fixing plate 421, a mounting frame 422 fixed on the top surface of the fixing plate 421, a spray header 423 arranged on the mounting frame 422, and a connecting pipe 424 connected with the spray header 423 and extending to the outer side of the purifying tower body 411; the air intake assembly 430 comprises a three-way air intake pipe 431 installed on the bottom surface of the purifying tower body 411, and a valve 432 adapted to the three-way air intake pipe 431; the smoke detection assembly comprises a fixed vertical rod fixed on the bottom surface of the fixed plate 421 and a smoke detector 440 connected with the fixed vertical rod; the second through hole 414 is connected to the air inlet pipe 521 of the electro-optical active carbon composite filter 500 through a pipe. When the three-way air inlet pipe 431 is particularly used, the three-way air inlet pipe 431 is designed to conveniently input air from three different angles, and can also be simultaneously input, so that the applicability of the purifying tower body 411 is improved.
Preferably, the water curtain spray degradation device 400 further comprises a liquid storage tank 450, and the liquid storage tank 450 is connected with the connecting pipe 424.
Preferably, the cremation tail gas ecological treatment system comprises a primary water curtain spray degradation device and a secondary water curtain spray degradation device, the primary water curtain spray degradation device 400 comprises a first liquid storage tank, the secondary water curtain spray degradation device 400 comprises a second liquid storage tank, water is stored in the first liquid storage tank, biological enzyme degradation liquid is stored in the second liquid storage tank, the main components of the degradation liquid are liquid microbial agents of lactic acid bacteria, saccharomycetes, photosynthetic bacteria and the like, which are fermented and cultured, and the degradation liquid can decompose proteins, inhibit the functions of ammoniation and hydrogen sulfide of nitrogen, effectively control the malodor degree in the tail gas, have no toxic or side effect, have no peculiar smell, do not harm the health of people and livestock, and have no secondary pollution, so that the concentration index of the purified tail gas reaches the primary standard in malodor pollutant emission standard (GB 14554-93). The embodiment is provided with at least two stages of degradation devices, wherein the first stage is used for degrading and dedusting through a water curtain, and the second stage is used for further purifying tail gas through spraying biological enzyme degradation liquid, so that the dedusting and purifying effects are greatly improved.
Preferably, the smoke detector 440 is located at a position just midway under the fixed plate 421.
Preferably, a fresh air fan 600 is further included, and an inlet end of the fresh air fan 600 is connected with an air outlet pipe 530 of the electro-optical activated carbon composite filter 500. In order to further improve the tail gas treatment effect of the whole ecological treatment system, the tail gas can finally reach the environmental protection standard, and the treatment system provided by the invention is further provided with a fresh air fan 600 in the final treatment link to carry out final purification treatment on the tail gas, so that the tail gas is directly discharged into the atmosphere.
Preferably, the water-cooled heat exchanger 100 reduces the exhaust gas temperature from 600 ℃ to 180 ℃ to facilitate the subsequent exhaust gas purification treatment.
The invention also provides a cremation tail gas ecological treatment method, as shown in fig. 8, which comprises the following steps:
s10, introducing tail gas generated by a cremation machine into a water-cooled heat exchanger for cooling;
s20, introducing the cooled tail gas into a bag-type dust remover for primary filtration;
s30, introducing the tail gas subjected to the primary filtration into an activated carbon adsorber for secondary filtration;
s40, introducing the tail gas subjected to the secondary filtration into a water curtain spray degradation device for tertiary filtration;
s50, introducing the tail gas subjected to the three-stage filtration into a photoelectric active carbon composite filter for sterilization and filtration treatment.
Preferably, after the step S50 of introducing the tail gas after the three-stage filtration into the photoelectric activated carbon composite filter for sterilization and filtration treatment, the method further comprises the steps of:
s60, introducing the tail gas after the sterilization and filtration treatment into a fresh air machine for purification treatment and then discharging the tail gas into the air.
The ecological treatment method is based on the cremation tail gas ecological treatment system described in the previous embodiment, and because the method adopts all the technical schemes of all the previous embodiments, the method at least has all the beneficial effects brought by the technical schemes of the previous embodiments, and the description is omitted here.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims (10)

1. An ecological treatment system for cremation tail gas, comprising:
the water-cooled heat exchanger is used for cooling cremation tail gas and comprises a heat exchange shell and a heat exchange tube, wherein the heat exchange tube is arranged in the heat exchange shell, the cremation tail gas is led into the inlet end of the heat exchange tube, the outlet end of the heat exchange tube is connected with the cloth bag type dust collector, cooling water is contained in the heat exchange shell, and the heat exchange shell comprises a water inlet and a water outlet;
the bag-type dust collector is used for carrying out primary filtration on the cooled tail gas and comprises an ash bucket, a filter bag and a frame body, wherein the filter bag is mounted on the frame body, the ash bucket is arranged below the filter bag, and the inlet end of the bag-type dust collector is connected with the outlet end of the water-cooled heat exchanger;
the active carbon absorber is used for carrying out secondary filtration on the tail gas after primary filtration, and the inlet end of the active carbon absorber is connected with the bag-type dust collector;
the water curtain spray degradation device is used for carrying out three-stage filtration on the tail gas after the two-stage filtration, and the inlet end of the water curtain spray degradation device is connected with the activated carbon adsorber;
the photoelectric active carbon composite filter is used for carrying out sterilization and filtration treatment on the tail gas after three-stage filtration, and is connected with the outlet end of the water curtain spray degradation device; wherein,
the photoelectric activated carbon composite filter comprises a shell component, an air inlet component, an air outlet pipe, a purifying component and an auxiliary rotating component; the shell component comprises a shell body, a cabinet door plate covered on the side surface of the shell body and a hinge for connecting the shell body and the cabinet door plate; the air inlet assembly comprises an air inlet pipe, a mounting frame, a rotating motor and blades, wherein the air inlet pipe is arranged at one end side of the inside of the outer shell, the mounting frame is arranged in the air inlet pipe, the rotating motor is connected with the mounting frame, and the blades are connected with the rotating motor; the air outlet pipe is arranged at the other end side in the outer shell; the purification assembly comprises a mounting groove, a filter screen, a photocatalyst carrier and an ultraviolet lamp tube, wherein the mounting groove is mounted in the outer shell, the filter screen is clamped with the mounting groove, the photocatalyst carrier is mounted in the outer shell and far away from the filter screen, and the ultraviolet lamp tube is mounted in the outer shell and is adjacent to the photocatalyst carrier; the auxiliary rotating assembly comprises a fixing sheet fixed on one side of the filter screen, a rectangular sheet in contact with the fixing sheet and a fastening bolt for fixing the rectangular sheet and the fixing sheet.
2. The cremation tail gas ecological treatment system according to claim 1, wherein the photoelectric activated carbon composite filter further comprises a connecting component, wherein the connecting component comprises a first groove formed at two ends of the photocatalyst carrier, a second groove formed at the upper surface and the lower surface of the inner part of the outer shell, a first magnet inlaid in the first groove and a second magnet inlaid in the second groove.
3. The cremated tail gas ecological treatment system of claim 1, wherein the cremated tail gas ecological treatment system comprises a plurality of water curtain spray degradators in series, each of the water curtain spray degradators comprising a purification tower assembly, a spray assembly, an air intake assembly, and a smoke detection assembly; wherein,
the purifying tower assembly comprises a purifying tower body, a tower top cover, a first through hole and a second through hole, wherein the purifying tower body is arranged, the tower top cover is connected to the top surface of the purifying tower body in a covering mode, the first through hole is formed in the periphery of the tower top cover, and the second through hole is formed in the top surface of the purifying tower body;
the spray assembly comprises a fixed plate arranged in the purification tower body, vent holes formed in the surface of the fixed plate, a mounting frame fixed on the top surface of the fixed plate, a spray header arranged on the mounting frame and a connecting pipe connected with the spray header and extending to the outer side of the purification tower body;
the air inlet assembly comprises a three-way air inlet pipe arranged on the bottom surface of the purifying tower body and a valve matched with the three-way air inlet pipe;
the smoke detection assembly comprises a fixed vertical rod fixed on the bottom surface of the fixed plate and a smoke detector connected with the fixed vertical rod;
the second through hole is connected with the air inlet pipe of the photoelectric activated carbon composite filter through a pipeline.
4. The cremation tail gas ecological treatment system of claim 3, wherein said water curtain spray degradation device further comprises a liquid storage tank, said liquid storage tank being connected to said connecting pipe.
5. The cremation tail gas ecological treatment system of claim 4, comprising a primary water curtain spray degradation device and a secondary water curtain spray degradation device, wherein the primary water curtain spray degradation device comprises a first liquid storage tank, the secondary water curtain spray degradation device comprises a second liquid storage tank, water is stored in the first liquid storage tank, and bio-enzyme degradation liquid is stored in the second liquid storage tank.
6. The cremation exhaust gas ecological treatment system of claim 3, wherein said smoke detector is positioned at a location directly intermediate below said stationary plate.
7. The cremation tail gas ecological treatment system according to claim 1, further comprising a fresh air fan, wherein an inlet end of the fresh air fan is connected with an air outlet pipe of the photoelectric activated carbon composite filter.
8. The cremated exhaust gas ecological treatment system of claim 1, wherein the water cooled heat exchanger reduces the exhaust gas temperature from 600 ℃ to 180 ℃.
9. A cremation tail gas ecological treatment method applied to the cremation tail gas ecological treatment system according to any one of claims 1 to 8, comprising the steps of:
introducing tail gas generated by the cremation machine into a water-cooled heat exchanger for cooling;
introducing the cooled tail gas into a bag-type dust remover for primary filtration;
introducing the tail gas after the primary filtration into an active carbon adsorber for secondary filtration;
introducing the tail gas subjected to the secondary filtration into a water curtain spray degradation device for tertiary filtration;
and introducing the tail gas subjected to the three-stage filtration into a photoelectric active carbon composite filter for sterilization and filtration treatment.
10. The method for ecologically treating cremated tail gas according to claim 9, further comprising the step of, after the step of introducing the tail gas after the three-stage filtration into a photoelectric activated carbon composite filter for sterilizing and filtering:
and (3) introducing the tail gas after the sterilization and filtration treatment into a fresh air machine for purification treatment and then discharging the tail gas into the air.
CN202110256798.6A 2021-03-09 2021-03-09 Cremation tail gas ecological treatment system and method Active CN112870903B (en)

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