CN215962868U - Cooling absorption tower and sulfur-containing waste treatment system - Google Patents

Cooling absorption tower and sulfur-containing waste treatment system Download PDF

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Publication number
CN215962868U
CN215962868U CN202121483021.5U CN202121483021U CN215962868U CN 215962868 U CN215962868 U CN 215962868U CN 202121483021 U CN202121483021 U CN 202121483021U CN 215962868 U CN215962868 U CN 215962868U
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China
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absorption
cooling
chamber
outlet
absorption layer
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CN202121483021.5U
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Chinese (zh)
Inventor
徐晓燕
李海涛
李忠于
孔京
张雪杰
吴英来
罗娟
孟建
陈英斌
赵建鑫
李颖
魏兰
江碧清
张成昆
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China Petroleum and Chemical Corp
Research Institute of Sinopec Nanjing Chemical Industry Co Ltd
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China Petroleum and Chemical Corp
Research Institute of Sinopec Nanjing Chemical Industry Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/74—Preparation
    • C01B17/76—Preparation by contact processes
    • C01B17/80—Apparatus
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/74—Preparation
    • C01B17/76—Preparation by contact processes
    • C01B17/80—Apparatus
    • C01B17/806—Absorbers; Heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G1/00—Steam superheating characterised by heating method
    • F22G1/16—Steam superheating characterised by heating method by using a separate heat source independent from heat supply of the steam boiler, e.g. by electricity, by auxiliary combustion of fuel oil
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Treating Waste Gases (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Gas Separation By Absorption (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The utility model discloses a cooling absorption tower and a sulfur-containing waste treatment system, wherein the cooling absorption tower comprises a tower body, a first absorption layer and a second absorption layer; the tower body is arranged along the vertical direction and is provided with a cooling absorption chamber extending along the vertical direction, the tower body comprises a gas inlet and a gas outlet which are respectively communicated with the cooling absorption chamber, the gas inlet is arranged at the lower part of the tower body, and the gas outlet is arranged at the upper part of the tower body; the first absorption layer and the second absorption layer are arranged in the cooling absorption cavity at intervals along the vertical direction, wherein the first absorption layer comprises a first spraying mechanism capable of spraying absorption liquid into the cooling absorption cavity, and the second absorption layer comprises a second spraying mechanism capable of spraying absorption liquid into the cooling absorption cavity. The cooling absorption tower has the advantages of good cooling effect and low use cost.

Description

Cooling absorption tower and sulfur-containing waste treatment system
Technical Field
The utility model relates to the technical field of sulfur-containing waste treatment, in particular to a cooling absorption tower and a sulfur-containing waste treatment system.
Background
In the chemical field, an absorption tower is a device for realizing absorption operation, and the flow modes of gas phase and liquid phase in the tower can be countercurrent or cocurrent. Usually, a countercurrent operation is adopted, the absorption liquid flows from the upper part of the tower body from top to bottom and contacts with the process gas flowing from bottom to top, the absorption liquid absorbing the absorbate is discharged from the bottom of the tower, and the absorbed process gas is discharged from the top of the tower.
At present, in various process flows, the number of absorption towers is the same as the number of absorption stages, so that the configuration of the arrangement pipelines of a plurality of absorption towers is relatively complex, and meanwhile, as the number of the absorption towers is more, the occupied area of the absorption towers is larger, the use cost is improved, and certain limitation is brought to the transformation of old factories.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the problems in the prior art and provide a cooling absorption tower and a sulfur-containing waste treatment system.
In order to achieve the above object, an aspect of the present invention provides a cooling absorption tower including a tower body, a first absorption layer, and a second absorption layer; the tower body is arranged along the vertical direction and is provided with a cooling absorption chamber extending along the vertical direction, the tower body comprises a gas inlet and a gas outlet which are respectively communicated with the cooling absorption chamber, the gas inlet is arranged at the lower part of the tower body, and the gas outlet is arranged at the upper part of the tower body; the first absorption layer and the second absorption layer are arranged in the cooling absorption cavity at intervals along the vertical direction, wherein the first absorption layer comprises a first spraying mechanism capable of spraying absorption liquid into the cooling absorption cavity, and the second absorption layer comprises a second spraying mechanism capable of spraying absorption liquid into the cooling absorption cavity.
Optionally, the first absorption layer is disposed below the second absorption layer, and the first spraying mechanism is configured to spray the cooling liquid while spraying the absorption liquid.
Optionally, the tower body includes a partition plate disposed in the cooling absorption chamber, the partition plate divides the cooling absorption chamber into a first chamber and a second chamber from bottom to top, the first absorption layer is disposed in the first chamber, and the second absorption layer is disposed in the second chamber; the tower body is provided with a first air inlet, a first air outlet, a second air inlet and a second air outlet; the first gas inlet and the first gas outlet are respectively communicated with the first chamber, the first gas inlet is positioned at the lower part of the first chamber, the first gas outlet is positioned at the upper part of the first chamber, and the first gas inlet is used for receiving external process gas; the second gas inlet and the second gas outlet are respectively communicated with the second chamber, the second gas inlet is positioned at the lower part of the second chamber, the second gas outlet is positioned at the upper part of the second chamber, the second gas inlet is communicated with the first gas outlet, and the second gas outlet is used for discharging the process gas to a downstream process; the second spraying mechanism is configured to spray the cooling liquid while spraying the absorption liquid, and the temperature of the cooling liquid is lower than that of the cooling liquid.
Optionally, the cooling absorption tower includes a first water pump and a first cooler, a first water outlet is provided at the bottom of the first chamber, the first water outlet is communicated with an inlet of the first water pump, an outlet of the first water pump is communicated with the first cooler, and the first cooler is communicated with the first spraying mechanism.
Optionally, the cooling absorption tower includes a second water pump and a second cooler, a second water outlet is provided at the bottom of the second chamber, the second water outlet is communicated with the first chamber, the first water outlet of the first chamber is communicated with an inlet of the second water pump, an outlet of the second water pump is communicated with the second cooler, and the second cooler is communicated with the second spraying mechanism.
Optionally, the cooling absorption tower comprises an aerosol separator disposed between the gas outlet and the second absorption layer.
Optionally, the first absorption layer includes a first filler, the first spraying mechanism is configured to spray the absorption liquid downward, and the first filler is disposed below the first spraying mechanism; the second absorption layer comprises a second filler, the second spraying mechanism is configured to spray absorption liquid downwards, and the second filler is arranged below the second spraying mechanism.
Optionally, the aerosol separator (600) may be in any one of a horizontal structure, a drawer structure, and a vertical structure.
Through the technical scheme, the tower body is arranged along the vertical direction and is provided with the cooling absorption chamber extending along the vertical direction, so that the cooling absorption tower disclosed by the utility model can reduce the floor area, and the use cost is reduced. In addition, the first absorption layer and the second absorption layer are arranged in the cooling absorption cavity at intervals along the vertical direction, the first absorption layer comprises a first spraying mechanism capable of spraying absorption liquid into the cooling absorption cavity, and the second absorption layer comprises a second spraying mechanism capable of spraying absorption liquid into the cooling absorption cavity, so that after the process gas enters the cooling absorption cavity from a gas inlet, absorption reaction can be respectively carried out on the absorption liquid sprayed by the first spraying mechanism and the absorption liquid sprayed by the second spraying mechanism, the absorption liquid fully absorbs sulfur trioxide in the process gas, and the effect of washing the process gas is achieved.
The utility model provides a sulfur-containing waste treatment system, which comprises the cooling absorption tower.
The sulfur-containing waste treatment system has the same advantages as the cooling absorption tower in comparison with the prior art, and the details are not repeated.
Additional features and advantages of the utility model will be set forth in the detailed description which follows.
Drawings
FIG. 1 is a schematic view of one embodiment of a cooling absorber tower of the present invention.
Description of the reference numerals
100-tower body, 111-first chamber, 112-second chamber, 121-first inlet, 122-second inlet, 131-first outlet, 132-second outlet, 140-baffle, 151-first outlet, 152-second outlet,
210-a first spraying mechanism, 220-a second spraying mechanism,
310-first filler, 320-second filler,
410-a first water pump, 420-a second water pump,
510-first cooler, 520-second cooler,
600-aerosol separator
Detailed Description
The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1, the cooling absorption tower of the present invention includes a tower body 100, a first absorption layer and a second absorption layer; the tower body 100 is arranged along a vertical direction and is provided with a cooling absorption chamber extending along the vertical direction, the tower body 100 comprises a gas inlet and a gas outlet which are respectively communicated with the cooling absorption chamber, the gas inlet is arranged at the lower part of the tower body 100, and the gas outlet is arranged at the upper part of the tower body 100; the first absorption layer and the second absorption layer are arranged in the cooling absorption cavity at intervals along the vertical direction, wherein the first absorption layer comprises a first spraying mechanism 210 capable of spraying absorption liquid into the cooling absorption cavity, and the second absorption layer comprises a second spraying mechanism 220 capable of spraying absorption liquid into the cooling absorption cavity.
In the present invention, since the tower body 100 is disposed in the vertical direction and has the cooling absorption chamber extending in the vertical direction, the cooling absorption tower of the present invention can reduce the floor space, thereby reducing the use cost. In addition, because the first absorption layer and the second absorption layer are arranged in the cooling absorption cavity at intervals along the vertical direction, the first absorption layer comprises the first spraying mechanism 210 capable of spraying absorption liquid into the cooling absorption cavity, and the second absorption layer comprises the second spraying mechanism 220 capable of spraying absorption liquid into the cooling absorption cavity, so that after the process gas enters the cooling absorption cavity from the gas inlet, the process gas can respectively perform absorption reaction with the absorption liquid sprayed by the first spraying mechanism 210 and the absorption liquid sprayed by the second spraying mechanism 220, the absorption liquid can fully absorb sulfur trioxide in the process gas, and the effect of washing the process gas is achieved.
In order to achieve the purpose of cooling the process gas during the washing process, in an embodiment of the present invention, the first absorption layer is disposed below the second absorption layer, and the first spraying mechanism 210 is configured to spray the cooling liquid while spraying the absorption liquid.
That is to say, the cooling absorption tower of the utility model can not only realize the function of absorbing and washing the process gas, but also achieve the purpose of effectively cooling the process gas.
Further, in an embodiment of the present invention, the tower body 100 further includes a partition plate 140 disposed in the cooling absorption chamber, the partition plate 140 dividing the cooling absorption chamber into a first chamber 111 and a second chamber 112 from bottom to top, the first absorption layer being disposed in the first chamber 111, and the second absorption layer being disposed in the second chamber 112; the tower body 100 is provided with a first air inlet 121, a first air outlet 131, a second air inlet 122 and a second air outlet 132; the first gas inlet 121 and the first gas outlet 131 are respectively communicated with the first chamber 111, the first gas inlet 121 is positioned at the lower part of the first chamber 111, the first gas outlet 131 is positioned at the upper part of the first chamber 111, and the first gas inlet 121 is used for receiving external process gas; the second gas inlet 122 and the second gas outlet 132 are respectively communicated with the second chamber 112, the second gas inlet 122 is positioned at the lower part of the second chamber 112, the second gas outlet 132 is positioned at the upper part of the second chamber 112, the second gas inlet 122 is communicated with the first gas outlet 131, and the second gas outlet 132 is used for discharging the process gas to a downstream process; the second spraying mechanism 220 is configured to spray the cooling liquid while spraying the absorption liquid, and the temperature of the cooling liquid is lower than that of the cooling liquid. The benefit of setting up like this is, can further reduce process gas's temperature through the cryogenic fluid, for example, the temperature of coolant liquid is 28 ~ 32 ℃, and process gas is washed after first absorbed layer and is cooled down to about 35 ℃, after the cooling of the cryogenic fluid that the temperature is 7 ~ 10 ℃, process gas can be washed after passing through the second absorbed layer and is cooled down to 15 ℃, thereby has improved the cooling effect greatly.
In order to improve the utilization efficiency of the cooling liquid, save energy and reduce the production cost, in an embodiment of the present invention, the cooling absorption tower includes a first water pump 410 and a first cooler 510, the bottom of the first chamber 111 is provided with a first water outlet 151, the first water outlet 151 is communicated with an inlet of the first water pump 410, an outlet of the first water pump 410 is communicated with the first cooler 510, and the first cooler 510 is communicated with the first spraying mechanism 210.
In order to improve the utilization efficiency of the refrigerating fluid, save energy and reduce production cost, in an embodiment of the present invention, the cooling absorption tower includes a second water pump 420 and a second cooler 520, the bottom of the second chamber 112 is provided with a second water outlet 152, the second water outlet 152 is communicated with the first chamber 111, the first water outlet 151 of the first chamber 111 is communicated with an inlet of the second water pump 420, an outlet of the second water pump 420 is communicated with the second cooler 520, and the second cooler 520 is communicated with the second spraying mechanism 220.
In order to better discharge the process gas and reduce impurities in the process gas, in one embodiment of the utility model, the cooling absorption tower comprises an aerosol separator 600, the aerosol separator 600 being arranged between the gas outlet and the second absorption layer.
In order to allow the absorption liquid to be more sufficiently contacted with the process gas, in one embodiment of the present invention, the first absorption layer includes a first packing 310, the first spray mechanism 210 is configured to be able to spray the absorption liquid downward, and the first packing 310 is disposed below the first spray mechanism 210; the second absorption layer includes a second packing 320, the second spraying mechanism 220 is configured to spray the absorption liquid downward, and the second packing 320 is disposed below the second spraying mechanism 220.
It should be understood that the packing may be made of various materials as long as it can allow the absorption liquid to be more sufficiently contacted with the process gas, and in one embodiment of the present invention, the first packing 310 and the second packing 320 are polypropylene halter rings.
Further, the tower body 100 is made of glass fiber reinforced plastic.
The utility model also provides a sulfur-containing waste treatment system which comprises the cooling absorption tower.
The sulfur-containing waste treatment system of the present invention has the same advantages as the cooling absorption tower described above with respect to the prior art, and thus, the details thereof are not repeated herein.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the utility model, many simple modifications may be made to the technical solution of the utility model, and in order to avoid unnecessary repetition, various possible combinations of the utility model will not be described further. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims (8)

1. A cooling absorption tower, characterized in that the cooling absorption tower comprises a tower body (100), a first absorption layer and a second absorption layer;
the tower body (100) is arranged along the vertical direction and is provided with a cooling absorption chamber extending along the vertical direction, the tower body (100) comprises a gas inlet and a gas outlet which are respectively communicated with the cooling absorption chamber, the gas inlet is arranged at the lower part of the tower body (100), and the gas outlet is arranged at the upper part of the tower body (100);
the first absorption layer and the second absorption layer are arranged in the cooling absorption cavity at intervals along the vertical direction, wherein the first absorption layer comprises a first spraying mechanism (210) capable of spraying absorption liquid into the cooling absorption cavity, and the second absorption layer comprises a second spraying mechanism (220) capable of spraying absorption liquid into the cooling absorption cavity;
the first absorption layer is arranged below the second absorption layer, and the first spraying mechanism (210) is configured to spray cooling liquid while spraying absorption liquid;
the second spraying mechanism (220) is configured to spray the cooling liquid while spraying the absorption liquid, and the temperature of the cooling liquid is lower than that of the cooling liquid.
2. A cooling absorption tower according to claim 1, wherein the tower body (100) comprises a partition plate (140) disposed in the cooling absorption chamber, the partition plate (140) dividing the cooling absorption chamber into a first chamber (111) and a second chamber (112) from bottom to top, the first absorption layer being disposed in the first chamber (111), the second absorption layer being disposed in the second chamber (112);
the tower body (100) is provided with a first air inlet (121), a first air outlet (131), a second air inlet (122) and a second air outlet (132); the first gas inlet (121) and the first gas outlet (131) are respectively communicated with the first chamber (111), the first gas inlet (121) is positioned at the lower part of the first chamber (111), the first gas outlet (131) is positioned at the upper part of the first chamber (111), and the first gas inlet (121) is used for receiving external process gas; the second gas inlet (122) and the second gas outlet (132) are respectively communicated with the second chamber (112), the second gas inlet (122) is positioned at the lower part of the second chamber (112), the second gas outlet (132) is positioned at the upper part of the second chamber (112), the second gas inlet (122) is communicated with the first gas outlet (131), and the second gas outlet (132) is used for discharging process gas to a downstream process.
3. A cooling absorption tower according to claim 2, comprising a first water pump (410) and a first cooler (510), wherein the bottom of the first chamber (111) is provided with a first water outlet (151), the first water outlet (151) is communicated with the inlet of the first water pump (410), the outlet of the first water pump (410) is communicated with the first cooler (510), and the first cooler (510) is communicated with the first spraying mechanism (210).
4. A cooling absorption tower according to claim 3, characterized in that the cooling absorption tower comprises a second water pump (420) and a second cooler (520), the bottom of the second chamber (112) is provided with a second water outlet (152), the second water outlet (152) is communicated with the first chamber (111), the first water outlet (151) of the first chamber (111) is communicated with the inlet of the second water pump (420), the outlet of the second water pump (420) is communicated with the second cooler (520), and the second cooler (520) is communicated with the second spraying mechanism (220).
5. A cooling absorption tower according to claim 1, comprising an aerosol separator (600), the aerosol separator (600) being arranged between the gas outlet and the second absorption layer.
6. The cooling absorption tower of claim 5, wherein the aerosol separator (600) is in any one of a horizontal structure, a drawer structure and a vertical structure.
7. The cooling absorption tower according to any one of claims 1 to 6, wherein the first absorption layer comprises a first packing (310), the first spraying mechanism (210) is configured to spray absorption liquid downward, and the first packing (310) is disposed below the first spraying mechanism (210);
the second absorption layer comprises a second filler (320), the second spraying mechanism (220) is configured to spray absorption liquid downwards, and the second filler (320) is arranged below the second spraying mechanism (220).
8. A sulfur-containing waste treatment system, comprising the cooling absorption tower of any one of claims 1 to 7.
CN202121483021.5U 2020-08-20 2021-06-30 Cooling absorption tower and sulfur-containing waste treatment system Active CN215962868U (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010841874 2020-08-20
CN2020108418745 2020-08-20

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CN215962868U true CN215962868U (en) 2022-03-08

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Application Number Title Priority Date Filing Date
CN202121483021.5U Active CN215962868U (en) 2020-08-20 2021-06-30 Cooling absorption tower and sulfur-containing waste treatment system
CN202110739603.3A Active CN114074926B (en) 2020-08-20 2021-06-30 Converter and sulfur-containing waste treatment system
CN202110736751.XA Pending CN114074924A (en) 2020-08-20 2021-06-30 System and method for preparing sulfuric acid by regenerating sulfur-containing waste
CN202121478711.1U Active CN215233316U (en) 2020-08-20 2021-06-30 Converter and sulfur-containing waste treatment system
CN202110736754.3A Pending CN114076318A (en) 2020-08-20 2021-06-30 Sulfur-containing waste treatment system, start-up temperature rise method, device and storage medium
CN202110736752.4A Pending CN114074925A (en) 2020-08-20 2021-06-30 Method for burning sulfur-containing waste and method for preparing sulfuric acid from sulfur-containing waste
CN202110739640.4A Pending CN114076320A (en) 2020-08-20 2021-06-30 Control method and device for sulfur-containing waste treatment system and readable storage medium
CN202110736744.XA Pending CN114076317A (en) 2020-08-20 2021-06-30 Sulfur-containing waste system, reaction furnace combustion control method and device and storage medium
CN202110736743.5A Pending CN114162790A (en) 2020-08-20 2021-06-30 Dust-removing heat-exchanging device, dust-removing heat-exchanging method of dust-containing high-temperature flue gas and method for preparing sulfuric acid from sulfur-containing waste
CN202110739636.8A Pending CN114076523A (en) 2020-08-20 2021-06-30 Reaction furnace assembly and sulfur-containing waste treatment system

Family Applications After (9)

Application Number Title Priority Date Filing Date
CN202110739603.3A Active CN114074926B (en) 2020-08-20 2021-06-30 Converter and sulfur-containing waste treatment system
CN202110736751.XA Pending CN114074924A (en) 2020-08-20 2021-06-30 System and method for preparing sulfuric acid by regenerating sulfur-containing waste
CN202121478711.1U Active CN215233316U (en) 2020-08-20 2021-06-30 Converter and sulfur-containing waste treatment system
CN202110736754.3A Pending CN114076318A (en) 2020-08-20 2021-06-30 Sulfur-containing waste treatment system, start-up temperature rise method, device and storage medium
CN202110736752.4A Pending CN114074925A (en) 2020-08-20 2021-06-30 Method for burning sulfur-containing waste and method for preparing sulfuric acid from sulfur-containing waste
CN202110739640.4A Pending CN114076320A (en) 2020-08-20 2021-06-30 Control method and device for sulfur-containing waste treatment system and readable storage medium
CN202110736744.XA Pending CN114076317A (en) 2020-08-20 2021-06-30 Sulfur-containing waste system, reaction furnace combustion control method and device and storage medium
CN202110736743.5A Pending CN114162790A (en) 2020-08-20 2021-06-30 Dust-removing heat-exchanging device, dust-removing heat-exchanging method of dust-containing high-temperature flue gas and method for preparing sulfuric acid from sulfur-containing waste
CN202110739636.8A Pending CN114076523A (en) 2020-08-20 2021-06-30 Reaction furnace assembly and sulfur-containing waste treatment system

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