CN112833403A - Stepped pre-combustion furnace system for hazardous waste treatment and hazardous waste treatment method - Google Patents

Stepped pre-combustion furnace system for hazardous waste treatment and hazardous waste treatment method Download PDF

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Publication number
CN112833403A
CN112833403A CN202110209159.4A CN202110209159A CN112833403A CN 112833403 A CN112833403 A CN 112833403A CN 202110209159 A CN202110209159 A CN 202110209159A CN 112833403 A CN112833403 A CN 112833403A
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furnace
combustion furnace
hazardous waste
slag
combustion
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CN202110209159.4A
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Chinese (zh)
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徐建荣
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Individual
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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
    • 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
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • 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
    • F23G5/442—Waste feed arrangements
    • 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
    • F23G5/442—Waste feed arrangements
    • F23G5/444—Waste feed arrangements for solid waste
    • 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
    • F23G5/50—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/70—Blending
    • F23G2201/702—Blending with other waste
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2202/00—Combustion
    • F23G2202/10—Combustion in two or more stages
    • F23G2202/101—Combustion in two or more stages with controlled oxidant supply

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Gasification And Melting Of Waste (AREA)

Abstract

The invention discloses a stepped pre-combustion furnace system for hazardous waste treatment and a hazardous waste treatment method, and relates to the field of cooperative treatment of hazardous waste by a cement kiln system, and the system comprises a pre-combustion furnace, a decomposing furnace and a tertiary air pipe, wherein the pre-combustion furnace is provided with a straight cylinder part and a stepped part arranged below the straight cylinder part, a slag slurry pipeline is arranged at the top end of the straight cylinder part and used for introducing hazardous waste slurry slag, the stepped part is composed of a plurality of steps, the tail end of the stepped part is communicated with the decomposing furnace, and air cannons are arranged on each step of the stepped part; a hot air pipeline is led out from a tertiary air pipe of the cement kiln and is communicated with a straight barrel part of the pre-combustion furnace, and the hot air pipeline is used for supplying heat to the pre-combustion furnace, and dangerous waste paddle slag falling into the step part is sprayed into the decomposing furnace for further combustion through an air cannon after pre-combustion or burnout. The invention not only completely surpasses the similar preburning furnace technology at home and abroad, but also thoroughly solves the problem of treatment of dangerous waste slurry slag at home and abroad at present, and has obvious cost advantage and good use effect.

Description

Stepped pre-combustion furnace system for hazardous waste treatment and hazardous waste treatment method
Technical Field
The invention relates to the field of cooperative disposal of hazardous waste by a cement kiln system, in particular to a stepped pre-combustion furnace system for hazardous waste treatment and a hazardous waste treatment method.
Background
The method is the best selection scheme for cooperatively treating the hazardous waste by utilizing the high-temperature waste gas of the cement kiln system, and the system can achieve the effects of most thorough treatment and no secondary pollution and residue.
The current treatment scheme is that hazardous waste is pretreated by crushing, stirring and the like to form slurry slag with higher water content (30-50%), and then the slurry slag is sent to a cement kiln system by a pump, and the following treatment schemes are adopted:
1) stepped precombustors using foreign technologies (like Krupp company in Germany or Simins company in Denmark): the hazardous waste slurry slag with high water content is directly sprayed into the pre-combustion furnace for pre-combustion and then enters the kiln tail decomposing furnace, but the application effect is not ideal, the treatment capacity is not large, and the investment is large.
2) The hazardous waste slurry slag with high water content is directly sprayed into the decomposing furnace for combustion by adopting a conveying pipeline: therefore, the scheme is that the hazardous waste slurry slag is directly sprayed into the decomposing furnace, and the slurry slag can directly fall into a kiln tail smoke chamber of the cement kiln or be adhered to the wall of the decomposing furnace due to high water content and the slurry slag is pumped in a lump, so that the influence on the temperature field distribution in the decomposing furnace is large, the skinning of a local area in the decomposing furnace and the skinning of the kiln tail smoke chamber can be formed, the normal operation of the cement kiln is seriously influenced, the yield and the operation rate of the cement kiln are influenced, and the heat value of the treated hazardous waste slurry slag cannot be too high (generally cannot be more than 2000 kCal/kg). At present, the scheme is basically dismantled and cannot be normally used.
3) And directly conveying the dangerous waste paddle residues to the section of the tertiary air pipe before entering the decomposing furnace by adopting a conveying pipeline. However, the practical operation conditions of a plurality of plants show that the treatment scheme is not ideal because the water content of the slurry slag is high and the slurry slag is pumped in a lump, so that the slurry slag can directly fall to the bottom of the tertiary air duct, the retention time of the scheme is short (usually 2-3 minutes), the drying and combustion of the dangerous waste slurry slag are insufficient, the fluctuation of carbon monoxide is aggravated, the stability of the temperature in a cement kiln system decomposition furnace and the discharge of nitrogen oxides are influenced, the heat value of the treated slurry slag cannot be too high (usually cannot be more than 2000kCal/kg), and the treatment capacity is not large and is usually below 3t/h (containing water). At present, the scheme is basically dismantled and cannot be normally used.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides the stepped pre-combustion furnace system for treating the dangerous waste, completely solves the problem of treatment of the dangerous waste slurry slag at home and abroad except completely surpassing the similar pre-combustion furnace technology at home and abroad, and has obvious cost advantage and good use effect.
The purpose of the invention is achieved by the following technical scheme: a stepped pre-combustion furnace system for hazardous waste treatment comprises a pre-combustion furnace, a decomposing furnace and a tertiary air pipe, wherein the pre-combustion furnace is provided with a straight cylinder part and a stepped part arranged below the straight cylinder part, a slag slurry pipeline is arranged at the top end of the straight cylinder part and used for introducing hazardous waste slurry slag, the stepped part is composed of a plurality of steps, the tail end of the stepped part is communicated with the decomposing furnace, and air guns are arranged on the steps of the stepped part; a hot air pipeline is led out from a tertiary air pipe of the cement kiln and is communicated with a straight barrel part of the pre-combustion furnace, and the hot air pipeline is used for supplying heat to the pre-combustion furnace, and dangerous waste paddle slag falling into the step part is sprayed into the decomposing furnace for further combustion through an air cannon after pre-combustion or burnout.
As a further technical scheme, the top end of the straight cylinder part is also provided with a solid waste inlet for introducing solid waste.
As a further technical scheme, the air cannon is installed on the side wall of the step, and the blowing interval time is controlled by a PLC control system.
As a further technical scheme, an expansion joint and an adjusting valve are arranged at one end of the hot air pipeline close to the tertiary air pipe, and an expansion joint is also arranged at one end of the hot air pipeline close to the pre-burning furnace.
A hazardous waste treatment method comprises the following steps:
1) leading the dangerous waste slurry slag into a straight cylinder part of the pre-combustion furnace from a slurry slag pipeline;
2) opening an adjusting valve, and introducing hot air of the tertiary air pipe into the straight cylinder part of the precombustion furnace;
3) after the dangerous waste paddle slag falls into the step parts and is fully pre-burned or burnt out, the air cannons on the steps at all levels are started, and the dangerous waste paddle slag is sprayed into the decomposing furnace for further combustion.
As a further technical scheme, in the step 1), the solid waste is introduced into the straight barrel part of the pre-combustion furnace through the solid waste inlet, so that the cooperative treatment of the dangerous waste and the solid waste is realized.
As a further technical scheme, in the step 2), the outer diameter of a hot air pipeline led out from the tertiary air pipe is DN 800-DN 1800mm, the temperature of hot air led into the precombustion furnace is 860-900 ℃, and the hot air accounts for 2% -25% of the total air volume of the tertiary air pipe.
As a further technical scheme, the volume of a straight cylinder part of the pre-combustion furnace is 10-35 m3The step number of the step part is 4-10, and the step angle is 10-50 degrees.
As a further technical scheme, 1-3 air cannons are arranged on each step of the step part, and the air cannons on each step are used for adjusting the blowing interval time through a PLC (programmable logic controller) control system according to actual processing requirements, so that the residence time of the dangerous waste oar residues in the pre-combustion furnace is adjusted.
As a further technical scheme, the water content of the dangerous waste pulp is 30% -50%, and the heat value of the dangerous waste pulp is 1000-4000 kCal/kg.
The invention has the beneficial effects that:
1. the method can realize stable and reliable treatment of the dangerous waste slurry slag with high water content, thoroughly eliminate the influence of the dangerous waste slurry slag on the temperature and production operation of a cement kiln and a kiln tail decomposing furnace thermal system, slightly improve the yield of the kiln system, and greatly improve the treatment capacity of the dangerous waste slurry slag;
2. the technological process and the production operation of the invention are simpler, the computer centralized control of the cement kiln system can be realized, and the maintenance-free operation can be basically realized; in addition, the pre-combustion furnace can realize the simultaneous treatment of solid hazardous waste only by additionally arranging a solid waste inlet at the furnace top and properly increasing the furnace volume;
3. compared with a foreign pre-combustion furnace, the treatment capacity of the hazardous waste slurry slag is greatly improved, and the maximum treatment capacity of the hazardous waste slurry slag can reach 10t/h (water content);
4. the investment of the system is low, and the investment of the stepped preburner with the same treatment capacity is only about 20 percent of that of a similar preburner abroad.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Description of reference numerals: the system comprises a pre-combustion furnace 1, a straight cylinder part 1-1, a step part 1-2, a decomposing furnace 2, a tertiary air pipe 3, a slag slurry pipeline 4, an air cannon 5, a hot air pipeline 6, a solid waste inlet 7, an expansion joint 8 and an adjusting valve 9.
Detailed Description
The invention will be described in detail below with reference to the following drawings:
example (b): as shown in the attached figure 1, the stepped pre-combustion furnace system for dangerous waste treatment comprises a pre-combustion furnace 1, a decomposition furnace 2 and a tertiary air pipe 3, wherein the pre-combustion furnace 1 is provided with a straight cylinder part 1-1 and a step part 1-2 arranged below the straight cylinder part 1-1, a slag slurry pipeline 4 is arranged at the top end of the straight cylinder part 1-1 and used for introducing dangerous waste slurry, and a solid waste inlet 7 is further formed at the top end of the straight cylinder part 1-1 and used for introducing solid waste. The step part 1-2 is composed of a plurality of steps, the tail end of the step part 1-2 is communicated with the decomposing furnace 2, air cannons 5 are mounted on the steps of the step part 1-2, the air cannons 5 are mounted on the side walls of the steps, and the blowing interval time is controlled by a PLC control system. A hot air pipeline 6 is led out from a tertiary air pipe 3 of the cement kiln, the hot air pipeline 6 is communicated with a straight barrel part 1-1 of the pre-combustion furnace 1 and used for supplying heat to the pre-combustion furnace 1, and the dangerous waste paddle slag falling into the step part 1-2 is sprayed into the decomposing furnace 2 for further combustion through an air cannon 5 after pre-combustion or burnout. And an expansion joint 8 and an adjusting valve 9 are arranged at one end of the hot air pipeline 6 close to the tertiary air pipe 3, and an expansion joint 8 is also arranged at one end of the hot air pipeline 6 close to the pre-combustion furnace 1.
A hazardous waste treatment method comprises the following steps:
1) leading the dangerous waste slurry into a straight cylinder part 1-1 of the pre-combustion furnace 1 from a slurry pipeline 4; the water content of the dangerous waste paddle residues is 30% -50%, and the heat value of the dangerous waste paddle residues is 1000-4000 kCal/kg; meanwhile, solid waste can be introduced into the straight barrel part 1-1 of the pre-combustion furnace 1 through the solid waste inlet 7, so that the cooperative treatment of dangerous waste and solid waste is realized.
2) Opening the adjusting valve 9, and introducing hot air of the tertiary air pipe 3 into the straight cylinder part 1-1 of the pre-combustion furnace 1; the outer diameter of the hot air pipeline 6 led out from the tertiary air pipe is DN 800-DN 1800mm, the temperature of the hot air led into the pre-combustion furnace 1 is 860-900 ℃, and the hot air accounts for 2% -25% of the total air volume of the tertiary air pipe.
3) After the dangerous waste oar slag falls into the step parts 1-2 and is fully pre-burned or burned out, the air cannons 5 on each step are started, and the dangerous waste oar slag is sprayed into the decomposing furnace 2 for further combustion.
Preferably, the volume of the straight cylinder part 1-1 of the pre-combustion furnace 1 is 10-35 m3The step number of the step parts 1-2 is 4-10, and the step angle is 10-50 degrees. And 1-3 air cannons 5 are arranged on each step of the step part 1-2, and the air cannons 5 on each step are used for adjusting the blowing interval time by a PLC (programmable logic controller) control system according to actual processing requirements, so that the retention time of the dangerous waste paddle slag in the pre-combustion furnace 1 is adjusted.
The invention changes the scheme that the dangerous waste slurry slag with the water content of 30-50% is directly sprayed into the decomposing furnace or the tertiary air pipe into a step-type precombustion furnace which is independently arranged outside the decomposing furnace, and hot air is introduced into the step-type precombustion furnace from the tertiary air pipe, the dangerous waste slurry slag enters the precombustion furnace from the top of the precombustion furnace through a slag slurry pipeline, and after the dangerous waste slurry slag is precombusted or burned out in the precombustion furnace, the dangerous waste slurry slag enters the decomposing furnace through an air cannon arranged at the bottom of the step, thereby eliminating the influence on the temperature field in the decomposing furnace and the influence on the operation of a cement kiln system. According to different properties (mainly water content, ignition point, heat value and the like) of the dangerous waste paddle residues, the residence time of the dangerous waste paddle residues in the pre-combustion furnace can be adjusted by adjusting the air cannon injection interval time of each stage of step through the PLC control system, so that the drying, pre-combustion and even burning-out of the paddle residues in the pre-combustion furnace are ensured.
Leading hot air from the tertiary air pipe to a pre-combustion furnace (the hot air temperature is 860-900 ℃, the outer diameter of the hot air pipe is DN 800-DN 1800mm, the extracted hot air accounts for 2% -25% of the total air quantity of the tertiary air pipe), wherein the volume of the straight cylinder part of the pre-combustion furnace is 10-35 m3The number of the steps of the bottom step is 4-10, and the step angle is 10-50 degrees), and the heat source is used for pre-burning or burning-out of dangerous waste paddle slag. According to different required treatment capacities and different dangerous waste paddle residues, hot air pipelines (provided with expansion joints and adjusting valves) with different pipe diameters, the volume of the pre-combustion furnace, the step angle, the number of steps, the number of air cannons, the retention time of the paddle residues in the pre-combustion furnace (0-60 minutes can be realized), and the like are designed.
After the invention is implemented, the pre-combustion furnace meeting the requirement of the processing capacity can be designed according to the characteristics of the water content, the heat value and the like of the slurry slag. The requirements on the heat value and the water content of the pulp slag are greatly reduced (the heat value range can be 1000-4000 kCal/kg), and the maximum treatment amount of the dangerous waste pulp slag can reach 10t/h (water content) according to different customer requirements and implementation conditions.
The invention can also simultaneously treat the dangerous waste paddle slag and the solid waste (a solid waste feeding port can be arranged at the top of the pre-combustion furnace), and really realizes the efficient cooperative treatment of the dangerous waste paddle slag and the solid waste.
The theoretical calculation of the invention is based on the following:
1. calculation of required Heat Source
Required hot air volume V (m)3(m) × throughput Q (t/h) × unit consumption K (m)3/t.s)×3600，
Wherein: v: the amount of hot air led from the tertiary air pipe is 860-900 ℃;
q: required processing capacity (t/h, moisture content 35-45%);
k: taking the hot air quantity required by unit hazardous waste to be 2.5-3.0 m3/t.s；
2. Calculation of Hot-air pipe diameter
According to the required hot air quantity (m)3The required inner diameter DN (m) of the pipeline can be calculated according to the wind speed (18 m/s) in the pipeline, the thickness of the heat-insulating layer in the pipeline is calculated according to 200mm (each of the nanometer heat-insulating plate and the castable is 100mm), and the final diameter D (m) of the pipeline is determined.
In summary, the following use effects can be achieved by adopting the patent of the invention:
1) can realize the useless oar sediment of danger of stable, reliable processing high moisture content to thoroughly eliminate the useless oar sediment of danger and to cement kiln and kiln tail decomposing furnace thermal system temperature and production operation's influence, and slightly promote kiln system's output, can improve the throughput of the useless oar sediment of danger simultaneously greatly.
2) The technological process and production operation of the invention are simple, can realize the computer centralized control of the cement kiln system, and can basically realize maintenance-free. In addition, the pre-combustion furnace can realize the simultaneous treatment of solid hazardous wastes only by additionally arranging a solid waste inlet at the furnace top and properly increasing the furnace volume.
3) Compared with a foreign pre-combustion furnace, the treatment capacity of the dangerous waste slurry slag is greatly improved, and the maximum treatment capacity of the dangerous waste slurry slag can reach 10t/h (water content).
4) The investment of the system is low, and the investment of the stepped preburner with the same treatment capacity is only about 20 percent of that of a similar preburner abroad.
Therefore, the invention not only completely surpasses the similar preburning furnace technology at home and abroad, but also thoroughly solves the problem of treatment of dangerous waste slurry slag at home and abroad at present, and has obvious cost advantage and good use effect.
It should be understood that equivalent substitutions and changes to the technical solution and the inventive concept of the present invention should be made by those skilled in the art to the protection scope of the appended claims.

Claims (10)

1. The utility model provides a useless processing of danger is with cascaded stove system that precombustes which characterized in that: the system comprises a pre-combustion furnace (1), a decomposing furnace (2) and a tertiary air pipe (3), wherein the pre-combustion furnace (1) is provided with a straight cylinder part (1-1) and a step part (1-2) arranged below the straight cylinder part (1-1), a slurry slag pipeline (4) is arranged at the top end of the straight cylinder part (1-1) and used for introducing hazardous waste slurry slag, the step part (1-2) is composed of a plurality of steps, the tail end of the step part (1-2) is communicated with the decomposing furnace (2), and air guns (5) are arranged on each step of the step part (1-2); a hot air pipeline (6) is led out from a tertiary air pipe (3) of the cement kiln, the hot air pipeline (6) is communicated with a straight cylinder part (1-1) of the pre-combustion furnace (1) and used for supplying heat to the pre-combustion furnace (1), and the dangerous waste paddle slag falling into the step part (1-2) is sprayed into the decomposing furnace (2) for further combustion through an air cannon (5) after pre-combustion or burnout.
2. The stepped precombustor system for hazardous waste treatment of claim 1, wherein: the top end of the straight barrel part (1-1) is also provided with a solid waste inlet (7) for introducing solid waste.
3. The stepped precombustor system for hazardous waste treatment of claim 1, wherein: the air cannon (5) is installed on the side wall of the step, and the interval time of blowing is controlled by a PLC control system.
4. The stepped precombustor system for hazardous waste treatment of claim 1, wherein: one end of the hot air pipeline (6) close to the tertiary air pipe (3) is provided with an expansion joint (8) and an adjusting valve (9), and one end of the hot air pipeline (6) close to the pre-combustion furnace (1) is also provided with the expansion joint (8).
5. A hazardous waste treatment method is characterized in that: the method comprises the following steps:
1) introducing the dangerous waste slurry into a straight cylinder part (1-1) of the pre-combustion furnace (1) from a slurry pipeline (4);
2) opening the adjusting valve (9), and introducing hot air of the tertiary air pipe (3) into the straight cylinder part (1-1) of the pre-combustion furnace (1);
3) after the dangerous waste paddle slag falls into the step parts (1-2) and is fully pre-burned or burned out, the air cannons (5) on each step are started, and the dangerous waste paddle slag is sprayed into the decomposing furnace (2) for further combustion.
6. The hazardous waste treatment method of claim 5, wherein: in the step 1), the solid waste is simultaneously introduced into the straight barrel part (1-1) of the pre-combustion furnace (1) through the solid waste inlet (7), so that the cooperative treatment of the dangerous waste paddle residues and the solid waste is realized.
7. The hazardous waste treatment method of claim 5, wherein: in the step 2), the outer diameter of a hot air pipeline (6) led out from the tertiary air pipe (3) is DN 800-DN 1800mm, the temperature of hot air led into the precombustion furnace (1) is 860-900 ℃, and the hot air accounts for 2% -25% of the total air volume of the tertiary air pipe.
8. The hazardous waste treatment method of claim 5, wherein: the volume of the straight cylinder part (1-1) of the pre-combustion furnace (1) is 10-35 m3The step number of the step part (1-2) is 4-10, and the step angle is 10-50 degrees.
9. The hazardous waste treatment method of claim 5, wherein: and 1-3 air cannons (5) are arranged on each step of the step part (1-2), and the air cannons (5) on each step are used for adjusting the blowing interval time by a PLC (programmable logic controller) control system according to actual processing requirements, so that the residence time of the dangerous waste oar slag in the pre-combustion furnace (1) is adjusted.
10. The hazardous waste treatment method of claim 5, wherein: the water content of the dangerous waste paddle residues is 30% -50%, and the heat value of the dangerous waste paddle residues is 1000-4000 kCal/kg.
CN202110209159.4A 2021-02-25 2021-02-25 Stepped pre-combustion furnace system for hazardous waste treatment and hazardous waste treatment method Pending CN112833403A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113847604A (en) * 2021-09-28 2021-12-28 安徽海螺建材设计研究院有限责任公司 System for cement kiln deals with useless danger of solid useless in coordination

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113847604A (en) * 2021-09-28 2021-12-28 安徽海螺建材设计研究院有限责任公司 System for cement kiln deals with useless danger of solid useless in coordination

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