CN111322623A - Primary drying air control system and method for mechanical grate garbage incinerator - Google Patents
Primary drying air control system and method for mechanical grate garbage incinerator Download PDFInfo
- Publication number
- CN111322623A CN111322623A CN202010264516.2A CN202010264516A CN111322623A CN 111322623 A CN111322623 A CN 111322623A CN 202010264516 A CN202010264516 A CN 202010264516A CN 111322623 A CN111322623 A CN 111322623A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- recirculation
- gain module
- garbage
- gas temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2207/00—Control
- F23G2207/40—Supplementary heat supply
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
Abstract
A primary dry air control system and method for a mechanical grate garbage incinerator comprises a flue gas recirculation baffle and a flue gas recirculation fan which are arranged at the tail part of a boiler, a recirculation flue gas flow sensor and a recirculation flue gas temperature sensor which are arranged between the flue gas recirculation baffle and the flue gas recirculation fan, a garbage moisture content sensor which is arranged at the outlet of a garbage hopper, a recycling flue gas temperature sensor gain module connected with the recycling flue gas temperature sensor, a garbage moisture sensor gain module connected with the garbage moisture sensor, a second-level multiplication operation module connected with the boiler outlet steam set value gain module, the garbage moisture sensor gain module and the recycling flue gas temperature sensor gain module, the PID controller is connected with the secondary multiplication module, the flue gas recirculation baffle and the recirculation flue gas flow sensor; the invention thoroughly improves the economy and the adjusting performance of the primary air system, improves the burning efficiency of the grate furnace and simultaneously reduces the pollutant discharge.
Description
Technical Field
The invention relates to the technical field of automatic control of waste incineration power generation, in particular to a primary drying air control system and a primary drying air control method for a mechanical grate waste incinerator.
Background
With the increasing attention on environmental protection, the waste incineration power generation is regarded as an important means for disposing domestic waste in a reduction, harmless and recycling manner, the industry development is concerned, the requirements of sustainable development strategies in China are met, the domestic waste incineration treatment enters a market comprehensive development stage under the strong support of national policies, and the grate furnace is one of the main types of current waste incineration.
At present, the autonomy of incineration equipment is realized by introducing advanced technologies such as German Martin, Belgium West, Japanese teddy bear, Hitachi and the like into domestic enterprises for absorption and innovation, but the economical efficiency and the stability of the operation of the incineration equipment still need to be further improved.
Mechanical grate incinerators generally employ a refuse centralized combustion system in which refuse transportation, agitation and air blowing are independent of each other. The grate furnace is provided with a multi-stage combustion area, and garbage is dried, devolatilized, pyrolyzed, gasified, combusted, burned out and cooled on the grate furnace. The whole grate forms three primary air areas with different functions: the drying area, the combustion area, the burnout and cooling area, the primary air comes from the same primary air main pipe, and different independent air supply is adopted to provide the primary air and control for each combustion section of the fire grate. The temperature of the exhaust smoke at the tail part of the boiler is generally about 180-230 ℃. The higher the air temperature control in the drying process of the mechanical grate waste incinerator for treating high-moisture and low-heat value waste in China at present, the faster the waste is dried, and the more favorable the combustion is. Meanwhile, the problem that the combustion in the incinerator is unstable and the garbage combustion efficiency is influenced due to the fact that low-temperature air is fed into the incinerator is avoided. The excessive oxygen is sent into the drying section of the fire grate, which is not beneficial to environmental protection. Therefore, the wind temperature is required to be controlled stably and timely.
In the prior art, a primary air system selectively sucks air from a garbage storage pit, the air is heated to a certain temperature through a two-stage steam air preheater and then enters an incinerator after being pressurized through a primary fan, and at present, the air preheater is heated mainly at home and abroad by adopting the following three modes.
(1) Steam is used as heating Source (SAH)
The primary air preheater generally adopts a steam-air heat exchange mode. The preheater adopts the one-level or second grade to arrange, in order to adapt to high moisture, the high-efficient complete combustion of low calorific value rubbish, needs to improve the primary air temperature as far as possible. If the primary drying is to be done to a hotter 220 c, the temperature of the heating source must be greater than 220 c. The heating heat source can reach above 220 ℃, and the waste incineration power plant only has steam drum saturated steam and main steam which are generated by a power generation process system boiler and used for doing work and generating power. Saturated steam and main steam pressure that the boiler produced are higher, and the steam pocket saturated steam just can become main steam after the superheater heating, and main steam is high-quality heat energy, can be used for the electricity generation. In order to reduce the consumption of high-temperature and high-pressure steam and achieve the effect of energy saving, the prior art generally adopts a two-stage heating mode, firstly uses the extracted steam of a steam turbine which has already performed part of work to heat as a first-stage heating steam source, and then uses saturated steam or main steam generated by a boiler as a second-stage heating steam source. However, at present, high-quality steam which can be originally used for work-making and power generation is required to be used for heating a heat source in any mode, so that the energy consumption level is high.
(2) Tail flue gas is used as heating source (GAH)
The air preheating system also adopts a two-stage heating mode, the first-stage heating section adopts steam heating to heat normal-temperature air (20 ℃) to 120 ℃, and a heating heat source is from a first pump (1.0MPa, 260 ℃) of a steam engine. The second-stage heating section adopts tail flue gas heating, the flue gas is discharged after entering the flue gas side of the air preheater, heat carried in the flue gas can be absorbed by radiating fins in the air preheater, then the air preheater rotates slowly, the radiating fins move to the air side, the heat is transferred to the air before entering a boiler, and the air after the first-stage heating is heated to 180-260 ℃. Although the waste heat of the flue gas is utilized for heating the flue gas without generating heat source loss, an expensive rotary air preheater is required to be added; in addition, the air preheater has poor sealing effect, is easy to block, and has low operation economy and reliability.
(3) Using other heating sources (DAH)
In consideration of the economy of a refuse power plant, in order to save the consumption of high-quality steam, natural gas or methane (generated by leachate treatment generated by refuse stacking) is increasingly adopted in the current design to directly heat primary air, so that the temperature of the primary air is increased. A gas burner is arranged in an air duct at the rear part of the primary fan, primary air passes through the burner and is mixed with fuel in the burner to burn so as to improve the temperature of the primary air. Although the defects of the two methods are avoided, the oxygen content of the primary air is reduced by burning in the primary air, and the oxygen demand of the combustion in the grate incinerator mainly comes from the primary air, so the reduction of the oxygen content of the primary air sacrifices the oxygen-enriched environment in the garbage burning process, and the increase of the incomplete combustion loss is easily caused, so that the garbage is incompletely burnt.
Through the analysis of the three modes, the investment is large, the equipment maintenance cost is high, and the three modes have respective limitations.
Disclosure of Invention
In order to solve the problems existing in the prior art, the invention aims to provide a primary drying air control system and a primary drying air control method for a mechanical grate waste incinerator, which thoroughly improve the economy and the adjusting performance of a primary air system, improve the incineration efficiency of the grate incinerator and simultaneously facilitate the reduction of pollutant emission.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a primary drying air control system of a mechanical grate garbage incinerator comprises a flue gas recirculation baffle 8 arranged on a pipeline connected with a tail flue of the boiler, a flue gas recirculation fan 7 arranged at an outlet of the flue gas recirculation baffle 8, a recirculation flue gas flow sensor 9 and a recirculation flue gas temperature sensor 12 arranged on the pipeline between the flue gas recirculation baffle 8 and the flue gas recirculation fan 7, a garbage moisture content sensor 10 arranged at an outlet of a garbage hopper, a recirculation flue gas temperature sensor gain module 16 connected with the recirculation flue gas temperature sensor 12 and used for outputting a recirculation flue gas temperature correction signal, a garbage moisture sensor gain module 15 connected with the garbage moisture content sensor 10 and used for outputting a garbage moisture correction signal, a boiler outlet steam set value gain module 14, a steam temperature sensor gain module 12, A secondary multiplication module 18 connected with the garbage moisture sensor gain module 15 and the recirculated flue gas temperature sensor gain module 16 and used for outputting an actual drying air demand signal, and a PID controller 13 connected with the secondary multiplication module 18, the flue gas recirculation baffle 8 and the recirculated flue gas flow sensor 9;
the recycling flue gas temperature and the garbage moisture measuring signals output by the recycling flue gas temperature sensor 12 and the garbage moisture sensor 10 are respectively sent to the recycling flue gas temperature sensor gain module 16 and the garbage moisture sensor gain module 15, and the recycling flue gas temperature sensor gain module 16 and the garbage moisture sensor gain module 15 output recycling flue gas temperature and garbage moisture correcting signals; the artificially set boiler outlet steam flow set value 11 outputs a theoretical drying air demand signal through a boiler outlet steam set value gain module 14, and a recirculated flue gas temperature correction signal and a garbage moisture correction signal which are respectively output by a recirculated flue gas temperature sensor gain module 16 and a garbage moisture sensor gain module 15 are jointly sent into a secondary multiplication module 18, and the secondary multiplication module 18 outputs an actual drying air demand signal which is the product of three paths of signals and is sent into a PID controller 13 as a set value of the PID controller; the recirculated flue gas flow signal output by the recirculated flue gas flow sensor 9 is used as the feedback input of the PID controller and is sent into the PID controller 13; the PID controller 13 outputs a control instruction of the flue gas recirculation baffle 8 according to a set value input of the PID controller output by the secondary multiplication module 18 and a feedback input of the PID controller output by the recirculation flue gas flow sensor 9, controls the opening of the flue gas recirculation baffle 8, and realizes the regulation of the recirculation flue gas flow.
The control method of the mechanical grate garbage incinerator primary drying air control system comprises the steps of starting a flue gas recirculation fan 7 when garbage throwing conditions are met, starting a flue gas recirculation baffle 8 after wind pressure is built, increasing or decreasing a theoretical drying air demand signal output by a boiler outlet steam set value gain module 14 when a boiler outlet steam flow set value 11 given by an operator is increased or decreased, linearly amplifying or decreasing a given gain and a bias coefficient of the signal through a recirculation flue gas temperature sensor gain module 16 and a garbage moisture sensor gain module 15, then respectively outputting a recirculation flue gas temperature and garbage moisture correction signal to form an increased or decreased actual drying air demand signal, increasing or decreasing a control instruction of the flue gas recirculation baffle 8 output by a PID (proportion integration differentiation) controller 13, and increasing or decreasing the opening degree of the flue gas recirculation baffle 8, and reducing or increasing the throttling of the recirculated flue gas pipeline, so as to increase or reduce the recirculated flue gas flow, until the output of the PID controller 13 does not change continuously after the feedback input of the PID controller from the recirculated flue gas flow sensor 9 is the same as the actual dry air demand signal from the secondary multiplication module 18, and finally the adjustment process of the recirculated flue gas flow is completed.
Compared with the prior art, the invention has the following advantages:
1. the tail flue gas of the boiler is introduced to be used as primary drying air, and the waste heat of the flue gas is used as a drying heat source, so that the energy is saved.
2. The drying section of the mechanical grate garbage incinerator is used for fully drying garbage, oxygen is not needed, the oxygen content of the recirculated flue gas is extremely low in the drying section 1, the oxidation generation of NOx (oxygen enrichment generation emission is high) is reduced, and therefore the NOx emission is lower.
3. The efficiency of the grate incinerator has higher requirement on the drying quality of the garbage with constantly changing quality, the temperature of the recycled flue gas adopted by the invention is high, the drying output of the independent control system according to moisture measurement is stably controlled, the response speed is high, the efficiency and the stability of combustion are better facilitated, and the better combustion and the burnout of the garbage on the grate are promoted.
Drawings
Fig. 1 is a schematic view of a primary drying air control system of a mechanical grate waste incinerator.
In the figure: 1-drying section 2-gasification section 3-burnout section 4-feeding grate 5-primary gasification fan 6-primary cooling fan 7-smoke recirculation fan 8-smoke recirculation baffle 9-recirculation smoke flow sensor 10-garbage moisture content sensor 11-boiler outlet steam flow set value 12-recirculation smoke temperature sensor 13-PID controller 14-boiler outlet steam set value gain module 15-garbage moisture sensor gain module 16-recirculation smoke temperature sensor gain module 17-air preheater 18-secondary multiplication And a method operation module.
Detailed Description
As shown in figure 1, the primary drying air control system of the mechanical grate waste incinerator comprises a flue gas recirculation baffle 8 arranged on a pipeline connected with a flue at the tail part of the boiler, and a flue gas recirculation fan 7 arranged at the outlet of the flue gas recirculation baffle 8, so that flue gas at the outlet of the boiler can be regulated by throttling of the recirculation baffle 8, is pressurized by the flue gas recirculation fan 7, and is finally sent into a drying section 1 of the mechanical grate waste incinerator through a pipeline to dry waste, and is used as primary air of the waste incineration grate boiler together with hot air sent into a gasification section 2 and a burnout section 3.
The invention relates to a primary drying air control system of a mechanical grate garbage incinerator, which further comprises a recirculated flue gas flow sensor 9 and a recirculated flue gas temperature sensor 12 which are arranged on a pipeline between a flue gas recirculation baffle 8 and a flue gas recirculation fan 7, and a garbage moisture content sensor 10 which is arranged at the outlet position of a garbage hopper; a recirculated flue gas temperature sensor gain module 16 connected with the recirculated flue gas temperature sensor 12 and outputting a recirculated flue gas temperature correction signal, and a garbage moisture sensor gain module 15 connected with the garbage moisture content sensor 10 and outputting a garbage moisture correction signal; the system also comprises a boiler outlet steam set value gain module 14, a secondary multiplication module 18 which is connected with the boiler outlet steam set value gain module 14, the garbage moisture sensor gain module 15 and the recycling flue gas temperature sensor gain module 16 and outputs an actual dry air demand signal, and a PID controller 13 which is connected with the secondary multiplication module 18, the flue gas recycling baffle 8 and the recycling flue gas flow sensor 9.
The recirculated flue gas temperature and the garbage moisture measurement signals output by the recirculated flue gas temperature sensor 12 and the garbage moisture sensor 10 are respectively sent to the recirculated flue gas temperature sensor gain module 16 and the garbage moisture sensor gain module 15, and the recirculated flue gas temperature sensor gain module 16 and the garbage moisture sensor gain module 15 output recirculated flue gas temperature and garbage moisture correction signals. The artificially set boiler outlet steam flow set value 11 outputs a theoretical drying air demand signal through a boiler outlet steam set value gain module 14, and a recirculated flue gas temperature correction signal and a garbage moisture correction signal which are respectively output by a recirculated flue gas temperature sensor gain module 16 and a garbage moisture sensor gain module 15 are jointly sent into a secondary multiplication module 18, and the secondary multiplication module 18 outputs an actual drying air demand signal which is the product of three paths of signals and is sent into a PID controller 13 as a set value of the PID controller. The recirculated flue gas flow signal output by the recirculated flue gas flow sensor 9 is fed to the PID controller 13 as a feedback input to the PID controller. The PID controller 13 outputs a control instruction of the flue gas recirculation baffle 8 according to a set value input of the PID controller output by the secondary multiplication module 18 and a feedback input of the PID controller output by the recirculation flue gas flow sensor 9, controls the opening of the flue gas recirculation baffle 8, and realizes the regulation of the recirculation flue gas flow.
The garbage falling from the garbage hopper firstly passes through the drying section 1, is dried by hot flue gas from the flue gas recirculation fan 7 by using combustion waste heat of the grate boiler, and then enters the gasification section 2 to complete main gasification incineration, and the garbage after main body combustion gradually enters the burnout section 3 to complete burnout, and is taken away heat by primary air and cooled, and finally residue is formed and discharged.
The invention discloses a control method of a primary drying air control system of a mechanical grate garbage incinerator, which comprises the following steps: when the condition of delivering the garbage is met, starting a flue gas recirculation fan 7, opening a flue gas recirculation baffle 8 after establishing wind pressure, increasing or decreasing a theoretical drying air demand signal output by a boiler outlet steam set value gain module 14 when a boiler outlet steam flow set value 11 given by an operator is increased or decreased, linearly amplifying or decreasing the signal by a given gain and a bias coefficient through a recirculation flue gas temperature sensor gain module 16 and a garbage moisture sensor gain module 15, then respectively outputting a recirculation flue gas temperature and a garbage moisture correction signal to form an increased or decreased actual drying air demand signal, increasing or decreasing a control instruction of the flue gas recirculation baffle 8 output by a PID controller 13, controlling the increase or decrease of the flue gas recirculation baffle 8, reducing or increasing the throttling of a recirculation flue gas pipeline, thereby increasing or decreasing the opening degree of the recirculation flue gas, until the feedback input of the PID controller from the recirculation flue gas flow sensor 9 is the same as the actual drying air demand signal from the secondary multiplication module 18, the output of the PID controller 13 does not change any more, and finally the adjustment process of the recirculation flue gas flow is completed.
Claims (2)
1. The utility model provides a mechanical grate waste incinerator primary drying wind control system which characterized in that: the device comprises a flue gas recirculation baffle (8) arranged on a pipeline connected with a tail flue of a boiler, a flue gas recirculation fan (7) arranged at an outlet of the flue gas recirculation baffle (8), a recirculation flue gas flow sensor (9) and a recirculation flue gas temperature sensor (12) arranged on the pipeline between the flue gas recirculation baffle (8) and the flue gas recirculation fan (7), a garbage moisture content sensor (10) arranged at an outlet of a garbage hopper, a recirculation flue gas temperature sensor gain module (16) connected with the recirculation flue gas temperature sensor (12) and used for outputting a recirculation flue gas temperature correction signal, a garbage moisture sensor gain module (15) connected with the garbage moisture content sensor (10) and used for outputting a garbage moisture correction signal, a boiler outlet steam set value gain module (14) and a boiler outlet steam set value gain module (14), A secondary multiplication module (18) which is connected with the garbage moisture sensor gain module (15) and the recycling flue gas temperature sensor gain module (16) and outputs an actual drying air demand signal, and a PID controller (13) which is connected with the secondary multiplication module (18), the flue gas recycling baffle (8) and the recycling flue gas flow sensor (9);
the recycling flue gas temperature and the garbage moisture measuring signals output by the recycling flue gas temperature sensor (12) and the garbage moisture sensor (10) are respectively sent to a recycling flue gas temperature sensor gain module (16) and a garbage moisture sensor gain module (15), and the recycling flue gas temperature sensor gain module (16) and the garbage moisture sensor gain module (15) output recycling flue gas temperature and garbage moisture correcting signals; a boiler outlet steam flow set value (11) which is manually set outputs a theoretical drying air demand signal and a recirculation flue gas temperature correction signal and a garbage moisture correction signal which are respectively output by a recirculation flue gas temperature sensor gain module (16) and a garbage moisture sensor gain module (15) through a boiler outlet steam set value gain module (14) and are jointly sent into a secondary multiplication module (18), and the secondary multiplication module (18) outputs an actual drying air demand signal which is the product of three paths of signals and is sent into a PID controller (13) as a set value of the PID controller; a recirculated flue gas flow signal output by a recirculated flue gas flow sensor (9) is used as the feedback input of a PID controller and is sent to the PID controller (13); and the PID controller (13) outputs a control instruction of the flue gas recirculation baffle (8) according to a set value input of the PID controller output by the secondary multiplication module (18) and a feedback input of the PID controller output by the recirculation flue gas flow sensor (9), controls the opening of the flue gas recirculation baffle (8), and realizes the regulation of the recirculation flue gas flow.
2. The control method of the primary drying air control system of the mechanical grate garbage incinerator of claim 1, characterized in that: when the condition of garbage delivery is met, a flue gas recirculation fan (7) is started, a flue gas recirculation baffle (8) is opened after wind pressure is established, when a boiler outlet steam flow set value (11) given by an operator is increased or decreased, a theoretical drying wind demand signal output by a boiler outlet steam set value gain module (14) is increased or decreased, the signal is subjected to linear amplification or reduction of given gain and offset coefficient through a recirculation flue gas temperature sensor gain module (16) and a garbage moisture sensor gain module (15), then recirculation flue gas temperature and garbage moisture correction signals are respectively output to form an increased or decreased actual drying wind demand signal, a control instruction of the flue gas recirculation baffle (8) output by a PID controller (13) is increased or decreased, and the opening degree of the flue gas recirculation baffle (8) is controlled to be increased or decreased, and reducing or increasing the throttling of the recirculated flue gas pipeline, so as to increase or reduce the recirculated flue gas flow, until the output of the PID controller (13) is not changed continuously after the feedback input of the PID controller from the recirculated flue gas flow sensor (9) is the same as the actual dry air demand signal from the secondary multiplication module (18), and finally the adjustment process of the recirculated flue gas flow is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010264516.2A CN111322623A (en) | 2020-04-07 | 2020-04-07 | Primary drying air control system and method for mechanical grate garbage incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010264516.2A CN111322623A (en) | 2020-04-07 | 2020-04-07 | Primary drying air control system and method for mechanical grate garbage incinerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111322623A true CN111322623A (en) | 2020-06-23 |
Family
ID=71169715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010264516.2A Pending CN111322623A (en) | 2020-04-07 | 2020-04-07 | Primary drying air control system and method for mechanical grate garbage incinerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111322623A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853801A (en) * | 2020-07-28 | 2020-10-30 | 山东百川同创能源有限公司 | Garbage pyrolysis gasification incineration system and technology |
| CN113587083A (en) * | 2021-07-27 | 2021-11-02 | 光大环境科技（中国）有限公司 | Grate furnace primary air distribution adjusting device and adjusting method |
| CN114370757A (en) * | 2021-03-25 | 2022-04-19 | 中冶长天国际工程有限责任公司 | Storage bin lump ore pretreatment system and lump ore pretreatment method |
| CN115218199A (en) * | 2022-06-29 | 2022-10-21 | 光大环境科技（中国）有限公司 | Automatic control method for flue gas recirculation and over-fire air |
-
2020
- 2020-04-07 CN CN202010264516.2A patent/CN111322623A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853801A (en) * | 2020-07-28 | 2020-10-30 | 山东百川同创能源有限公司 | Garbage pyrolysis gasification incineration system and technology |
| CN114370757A (en) * | 2021-03-25 | 2022-04-19 | 中冶长天国际工程有限责任公司 | Storage bin lump ore pretreatment system and lump ore pretreatment method |
| CN113587083A (en) * | 2021-07-27 | 2021-11-02 | 光大环境科技（中国）有限公司 | Grate furnace primary air distribution adjusting device and adjusting method |
| CN115218199A (en) * | 2022-06-29 | 2022-10-21 | 光大环境科技（中国）有限公司 | Automatic control method for flue gas recirculation and over-fire air |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111322623A (en) | Primary drying air control system and method for mechanical grate garbage incinerator | |
| JP2017203434A (en) | Furnace operating method in waste treatment facility and waste treatment facility | |
| CN110805906A (en) | Sludge and garbage drying carbonization pyrolysis combustion treatment system and method | |
| CN203273907U (en) | Combustion air system of large-scale household garbage incinerator | |
| CN112503497A (en) | Combined cycle thermodynamic system based on coupling of light gas turbine and biomass direct-fired grate boiler | |
| CN212005697U (en) | Primary drying air control system of mechanical grate garbage incinerator | |
| CN218721507U (en) | High-efficient domestic waste burns burning furnace air distribution system | |
| CN208253642U (en) | Composite heating air preheater | |
| CN116123558A (en) | Direct-fired utilization system of quality-improving gasification fine slag pulverized coal furnace and operation method thereof | |
| CN216953087U (en) | Improve sludge incinerator of burning | |
| CN216409021U (en) | Flue gas recycling system of waste heat boiler of gas turbine | |
| CN215892366U (en) | Smoke circulating heating device of incinerator grate | |
| CN213955834U (en) | Lignite drying system for drying lignite by using circulating flue gas | |
| CN207849356U (en) | A kind of efficient multi-chamber boiler-burner | |
| CN212178877U (en) | Primary air system for waste incineration power generation | |
| CN114636159A (en) | Mechanical grate furnace garbage incineration equipment and method | |
| CN204240386U (en) | Superheat steam drying powder process type coal generating system | |
| CN202420214U (en) | Waste-heat utilization flue after-burning device | |
| CN216047699U (en) | Garbage incinerator primary air and flue gas hybrid system | |
| CN113280354B (en) | Process method for coupling high-temperature tail gas and gas into furnace in active carbon preparation process | |
| CN217928780U (en) | Circulating fluidized bed hot blast stove system | |
| KR20000002871A (en) | Incinerator drying facilitating device using recirculation of ignition gas | |
| CN219063442U (en) | Combustion furnace depending on coal-fired power plant | |
| CN218442311U (en) | High-efficient oxygen boosting burning structure of waste incinerator | |
| CN218895407U (en) | Pyrolysis and gasification treatment system for solid waste |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |