CN113587115A - Kiln temperature control method under rotary kiln secondary air design and SMP feeding mode - Google Patents
Kiln temperature control method under rotary kiln secondary air design and SMP feeding mode Download PDFInfo
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- CN113587115A CN113587115A CN202110810657.4A CN202110810657A CN113587115A CN 113587115 A CN113587115 A CN 113587115A CN 202110810657 A CN202110810657 A CN 202110810657A CN 113587115 A CN113587115 A CN 113587115A
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000013461 design Methods 0.000 title claims abstract description 35
- 239000002699 waste material Substances 0.000 claims abstract description 107
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000002485 combustion reaction Methods 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000011819 refractory material Substances 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims abstract description 6
- 230000002035 prolonged effect Effects 0.000 claims abstract description 4
- 238000009826 distribution Methods 0.000 claims description 30
- 238000002156 mixing Methods 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 7
- 230000009471 action Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004886 process control Methods 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 238000004056 waste incineration Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
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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
- F23G5/50—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
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- 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
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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
- F23G5/20—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having rotating or oscillating drums
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—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
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/10—Drying by heat
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- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/80—Shredding
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Incineration Of Waste (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention discloses a kiln temperature control method under a rotary kiln secondary air design and SMP feeding mode, which comprises the following steps: when the waste is combusted in the rotary kiln, the treatment proportion of the low-flash-point high-heat-value materials is optimized, a reasonable air utilization strategy is adopted, the waste is prevented from being rapidly combusted after entering the kiln to generate high temperature, the low-heat-value waste liquid is reasonably used at a spray gun of a rotary kiln combustor to absorb heat emitted due to rapid combustion, a steam layer is formed by reasonably using the low-heat-value waste liquid at the bottom of the rotary kiln and close to the position of a refractory material layer and a waste material layer, the drying section of the waste is prolonged, and the kiln speed of the rotary kiln is adjusted by matching with the filling rate of the kiln. The kiln temperature control method under the mode of matching the design of the secondary air of the rotary kiln with the SMP feeding is characterized in that a reasonable control scheme is adopted when the air supply mode of the kiln head and the SMP are combined to actually process the low-flash-point materials, so that the requirement of good temperature control is met, and a better use prospect is brought.
Description
Technical Field
The invention relates to the field of waste treatment, in particular to a kiln temperature control method under a rotary kiln secondary air design and SMP feeding mode.
Background
A kiln temperature control method under a rotary kiln secondary air design and SMP feeding mode is a method for controlling kiln temperature during waste treatment, the existing rotary kiln solid waste air distribution mode is annular, the structure of a kiln mask can be fully air-cooled, a good cooling protection effect is achieved, good mixing with internal waste and smoke generated by waste evaporation is easily formed under the action of system negative pressure, a single-point tangential air distribution air inlet mode is simple, disturbance on solid waste incineration is small, wind disturbance is increased in a tangential direction and a vertical direction by multi-point air supply, disturbance on in-furnace incineration and smoke mixing are enhanced, and along with continuous development of science and technology, the manufacturing process requirements of people on the kiln temperature control method under the rotary kiln secondary air design and SMP feeding mode are higher and higher.
In the prior art, the patent with the publication number of CN201110074636.7 discloses an automatic control system and an automatic control method for a rotary kiln, which realize the automatic control of the production process of the rotary kiln, ensure the stability of the temperature in the rotary kiln, and further ensure the stable quality of the calcined reduction raw material, the kiln temperature control method under the existing rotary kiln secondary air design and SMP feeding mode has certain disadvantages when in use, under the protection of inert gas nitrogen, can effectively and safely process low-flash point materials (flash point is lower than 65 ℃), generally, the corresponding heat value of the low-flash point materials is higher, generally more than 20MJ/kg, such materials can be rapidly combusted after entering the rotary kiln, generate higher temperature, cause the over-high temperature of the kiln head of the rotary kiln, further cause the problems of ring formation of the kiln head, high thermal stress of refractory materials, and the like, are not beneficial to the use of people, and bring certain adverse effects to the use process of people, therefore, a kiln temperature control method under the mode that secondary air of the rotary kiln is designed and matched with SMP feeding is provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a kiln temperature control method under the mode of matching secondary air design of a rotary kiln with SMP feeding, and the method adopts a reasonable control scheme when a kiln head air supply mode and SMP are combined to actually process low-flash-point materials so as to meet the requirement of good temperature control and effectively solve the problems in the background art.
(II) technical scheme
In order to achieve the purpose, the invention adopts the technical scheme that: a kiln temperature control method under a rotary kiln secondary air design and SMP feeding mode comprises the following steps:
s1: waste material collection: preparing a waste collecting box, and introducing waste into the waste collecting box for storage, wherein the four sides of the waste collecting box are closed, so that the situation of air leakage is not easy to occur;
s2: pretreatment of waste materials: guiding the waste stored in the waste collection box into an SMP device according to the amount for pretreatment operation, and performing crushing, mixing and conveying operation on the waste;
s3: feeding waste materials: pumping the pretreated waste into the rotary kiln, and operating in the rotary kiln;
s4: air distribution of the rotary kiln: carrying out secondary air distribution operation on the rotary kiln, wherein the secondary air distribution is designed in a 360-degree annular air distribution mode;
s5: and (3) combustion treatment: when the waste is subjected to combustion treatment in the rotary kiln, the treatment proportion of low-flash-point high-heat-value materials is optimized, a reasonable air utilization strategy is adopted, the waste is prevented from being rapidly combusted after entering the kiln to generate high temperature, the low-heat-value waste liquid is reasonably used at a spray gun of a rotary kiln combustor to absorb heat emitted by rapid combustion, the low-heat-value waste liquid is reasonably used to form a steam layer at the bottom of the rotary kiln and close to a refractory material layer and a waste material layer, a drying section of the waste is prolonged, the waste is prevented from being rapidly combusted to generate high temperature after entering the kiln, the kiln speed of the rotary kiln is adjusted by matching with the filling rate of the kiln, and the waste is prevented from being rapidly combusted to generate high temperature after entering the kiln;
s6: the overall operation is as follows: and when the air supply mode of the kiln head and SMP (symmetric multi-processing) actual treatment of the low-flash-point material are combined, a reasonable control scheme is adopted to meet the requirement of good temperature control, and the incineration treatment is finished.
As a preferred technical solution, the SMP apparatus in step S2 is a waste treatment apparatus integrating crushing, mixing and pumping.
As a preferable technical scheme, the material entering the rotary kiln in the step S3 is a low-flash-point material, the flash point is lower than 65 ℃, and the heat value is more than 20 MJ/kg.
As a preferable technical solution, the air distribution design of the rotary kiln in the step S4 includes an annular air distribution design, a single-point tangential air distribution design, and a multi-point air supply design.
As a preferable technical scheme, the proportion of the low-flash-point material is optimized in the step S5, and the heat value of the material is controlled to be 13-15 MJ/Kg.
In a preferable technical scheme, in the step S5, the air supply operation is performed by using an air strategy in a manner of low oxygen in the furnace and oxygen enrichment in a secondary combustion chamber.
As a preferable technical scheme, in the step S5, water is adopted as the low-calorific-value waste liquid, and the water quantity is reasonably controlled.
As a preferable technical scheme, in the step S5, the kiln speed of the rotary kiln is reasonably controlled by adjusting the filling rate.
(III) advantageous effects
Compared with the prior art, the invention provides a kiln temperature control method under the mode of matching secondary air design of a rotary kiln with SMP feeding, which has the following beneficial effects: the kiln temperature control method under the rotary kiln secondary air design and SMP feeding mode is characterized in that when a kiln head air supply mode and SMP actual processing low-flash-point materials are combined, a reasonable control scheme is adopted to meet the requirement of good temperature control, through reasonable incineration compatibility and process control means, the smoke temperature and waste incineration of the kiln head are effectively controlled, an incineration model is stabilized while refractory materials are protected, the safe and economic process control purpose is achieved, a waste collection box is prepared, waste is guided into the waste collection box for storage, the waste collection box is sealed on four sides, and the situation of air leakage is not easy to occur, the waste stored in the waste collection box is guided into an SMP device according to quantity for pretreatment operation, the waste is crushed, mixed and conveyed, the pretreated waste is pumped into the rotary kiln for operation in the rotary kiln, the method comprises the steps of carrying out secondary air distribution operation on a rotary kiln, wherein the secondary air distribution is a 360-degree annular air distribution design, optimizing the treatment proportion of low-flash-point high-heat-value materials when waste materials are combusted in the rotary kiln, adopting a reasonable air utilization strategy to prevent the waste materials from rapidly combusting and generating high temperature after entering the kiln, reasonably using low-heat-value waste liquid at a spray gun of a rotary kiln combustor to absorb heat emitted by rapid combustion, reasonably using the low-heat-value waste liquid to form a steam layer at the bottom of the rotary kiln close to a refractory material layer and a waste material layer, prolonging the drying section of the waste materials, preventing the waste materials from rapidly combusting and generating high temperature after entering the kiln, adjusting the kiln speed of the rotary kiln according to the filling rate of the kiln, preventing the waste materials from rapidly combusting and generating high temperature after entering the kiln, finishing the treatment of the rotary kiln, and designing and matching the kiln temperature control method under the SMP feeding mode through the whole secondary air distribution simple structure, convenient operation, the effect of using is better than traditional mode.
Detailed Description
A kiln temperature control method under a rotary kiln secondary air design and SMP feeding mode comprises the following steps:
s1: waste material collection: preparing a waste collecting box, and introducing waste into the waste collecting box for storage, wherein the four sides of the waste collecting box are closed, so that the situation of air leakage is not easy to occur;
s2: pretreatment of waste materials: guiding the waste stored in the waste collection box into an SMP device according to the amount for pretreatment operation, and performing crushing, mixing and conveying operation on the waste;
s3: feeding waste materials: pumping the pretreated waste into the rotary kiln, and operating in the rotary kiln;
s4: air distribution of the rotary kiln: carrying out secondary air distribution operation on the rotary kiln, wherein the secondary air distribution is designed in a 360-degree annular air distribution mode;
s5: and (3) combustion treatment: when the waste is subjected to combustion treatment in the rotary kiln, the treatment proportion of low-flash-point high-heat-value materials is optimized, a reasonable air utilization strategy is adopted, the waste is prevented from being rapidly combusted after entering the kiln to generate high temperature, the low-heat-value waste liquid is reasonably used at a spray gun of a rotary kiln combustor to absorb heat emitted by rapid combustion, the low-heat-value waste liquid is reasonably used to form a steam layer at the bottom of the rotary kiln and close to a refractory material layer and a waste material layer, a drying section of the waste is prolonged, the waste is prevented from being rapidly combusted to generate high temperature after entering the kiln, the kiln speed of the rotary kiln is adjusted by matching with the filling rate of the kiln, and the waste is prevented from being rapidly combusted to generate high temperature after entering the kiln;
s6: the overall operation is as follows: and when the air supply mode of the kiln head and SMP (symmetric multi-processing) actual treatment of the low-flash-point material are combined, a reasonable control scheme is adopted to meet the requirement of good temperature control, and the incineration treatment is finished.
Further, the SMP apparatus in step S2 is a waste disposal apparatus integrating crushing, mixing and pumping.
Further, the material entering the rotary kiln in the step S3 is a low-flash-point material, the flash point is lower than 65 ℃, and the heat value is more than 20 MJ/kg.
Further, the air distribution design of the rotary kiln in the step S4 includes an annular air distribution design, a single-point tangential air distribution design, and a multi-point air supply design.
Further, in the step S5, the proportion of the low-flash-point material is optimized, and the heat value of the material is controlled to be 13-15 MJ/Kg.
Further, in the step S5, the air supply operation is carried out by adopting an air strategy in a furnace low-oxygen and secondary combustion chamber oxygen-rich mode.
Further, in the step S5, water is adopted as the low calorific value waste liquid, and the water quantity is reasonably controlled.
Further, in the step S5, the kiln speed of the rotary kiln is reasonably controlled by adjusting the filling rate.
The working principle is as follows: preparing a waste collecting box, guiding waste into the waste collecting box for storage, sealing four sides of the waste collecting box, and preventing gas leakage, guiding the waste stored in the waste collecting box into an SMP device according to the amount for pretreatment, crushing, mixing and conveying the waste, pumping the pretreated waste into the rotary kiln, operating in the rotary kiln, performing secondary air distribution operation on the rotary kiln, wherein the secondary air distribution is a 360-degree annular air distribution design, optimizing the treatment proportion of low-flash-point and high-heat-value materials when the waste is subjected to combustion treatment in the rotary kiln, adopting a reasonable air utilization strategy to prevent the waste from being rapidly combusted after entering the kiln to generate high temperature, reasonably using low-heat-value waste liquid at a spray gun of a rotary kiln burner to absorb heat emitted by rapid combustion, and using the low-heat-value waste liquid at the bottom of the rotary kiln to be close to the refractory material and the waste material layer, reasonably using low-heat value waste liquid to form a steam layer, prolonging the drying section of waste materials, preventing the waste materials from generating high temperature by fast combustion after entering a kiln, adjusting the kiln speed of a rotary kiln by matching with the filling rate of the kiln, preventing the waste materials from generating high temperature by fast combustion after entering the kiln, adopting a reasonable control scheme when combining an air supply mode of a kiln head and SMP (symmetric multi-processing) actual treatment of low-flash-point materials to meet the requirement of good temperature control, effectively controlling the smoke temperature of the kiln head and waste material incineration by reasonably incinerating compatibility and process control means after the incineration treatment is finished, protecting refractory materials, stabilizing an incineration model and achieving the purpose of safe and economic process control.
It is noted that, herein, relational terms such as first and second (a, b, etc.) and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A kiln temperature control method under a rotary kiln secondary air design and SMP feeding mode is characterized in that: the method comprises the following steps:
s1: waste material collection: preparing a waste collecting box, and introducing waste into the waste collecting box for storage, wherein the four sides of the waste collecting box are closed, so that the situation of air leakage is not easy to occur;
s2: pretreatment of waste materials: guiding the waste stored in the waste collection box into an SMP device according to the amount for pretreatment operation, and performing crushing, mixing and conveying operation on the waste;
s3: feeding waste materials: pumping the pretreated waste into the rotary kiln, and operating in the rotary kiln;
s4: air distribution of the rotary kiln: carrying out secondary air distribution operation on the rotary kiln, wherein the secondary air distribution is designed in a 360-degree annular air distribution mode;
s5: and (3) combustion treatment: when the waste is subjected to combustion treatment in the rotary kiln, the treatment proportion of low-flash-point high-heat-value materials is optimized, a reasonable air utilization strategy is adopted, the waste is prevented from being rapidly combusted after entering the kiln to generate high temperature, the low-heat-value waste liquid is reasonably used at a spray gun of a rotary kiln combustor to absorb heat emitted by rapid combustion, the low-heat-value waste liquid is reasonably used to form a steam layer at the bottom of the rotary kiln and close to a refractory material layer and a waste material layer, a drying section of the waste is prolonged, the waste is prevented from being rapidly combusted to generate high temperature after entering the kiln, the kiln speed of the rotary kiln is adjusted by matching with the filling rate of the kiln, and the waste is prevented from being rapidly combusted to generate high temperature after entering the kiln;
s6: the overall operation is as follows: and when the air supply mode of the kiln head and SMP (symmetric multi-processing) actual treatment of the low-flash-point material are combined, a reasonable control scheme is adopted to meet the requirement of good temperature control, and the incineration treatment is finished.
2. The kiln temperature control method under the rotary kiln secondary air design and SMP feeding mode according to claim 1, characterized in that: the SMP apparatus in the step S2 is a waste treatment apparatus integrating crushing, mixing and pumping.
3. The kiln temperature control method under the rotary kiln secondary air design and SMP feeding mode according to claim 1, characterized in that: and the material entering the rotary kiln in the step S3 is a low-flash-point material, the flash point is lower than 65 ℃, and the heat value is more than 20 MJ/kg.
4. The kiln temperature control method under the rotary kiln secondary air design and SMP feeding mode according to claim 1, characterized in that: and the air distribution design of the rotary kiln in the step S4 comprises an annular air distribution design, a single-point tangent air distribution design and a multi-point air supply design.
5. The kiln temperature control method under the rotary kiln secondary air design and SMP feeding mode according to claim 1, characterized in that: and in the step S5, the proportion of the low-flash-point material is optimized, and the heat value of the material is controlled to be 13-15 MJ/Kg.
6. The kiln temperature control method under the rotary kiln secondary air design and SMP feeding mode according to claim 1, characterized in that: and in the step S5, air supply operation is carried out by adopting an air strategy in a furnace low-oxygen and second combustion chamber oxygen-rich mode.
7. The kiln temperature control method under the rotary kiln secondary air design and SMP feeding mode according to claim 1, characterized in that: and in the step S5, water is adopted as the low-calorific-value waste liquid, and the water quantity is reasonably controlled.
8. The kiln temperature control method under the rotary kiln secondary air design and SMP feeding mode according to claim 1, characterized in that: and in the step S5, the kiln speed of the rotary kiln is reasonably controlled by adjusting the filling rate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110810657.4A CN113587115A (en) | 2021-07-19 | 2021-07-19 | Kiln temperature control method under rotary kiln secondary air design and SMP feeding mode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110810657.4A CN113587115A (en) | 2021-07-19 | 2021-07-19 | Kiln temperature control method under rotary kiln secondary air design and SMP feeding mode |
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| CN113587115A true CN113587115A (en) | 2021-11-02 |
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| CN202110810657.4A Pending CN113587115A (en) | 2021-07-19 | 2021-07-19 | Kiln temperature control method under rotary kiln secondary air design and SMP feeding mode |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU898215A1 (en) * | 1980-04-21 | 1982-01-15 | Ивановский Энергетический Институт Им. В.И. Ленина | Method of burning liquid combustible quick-imflammable wastes |
| EP0926440A1 (en) * | 1996-09-07 | 1999-06-30 | Equa Co., Ltd. | Incinerator |
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