CN113531556B - Control method of high-water-content sludge self-maintenance smoldering treatment system - Google Patents
Control method of high-water-content sludge self-maintenance smoldering treatment system Download PDFInfo
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- 239000010802 sludge Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000012423 maintenance Methods 0.000 title claims abstract description 12
- 238000002485 combustion reaction Methods 0.000 claims abstract description 88
- 239000000463 material Substances 0.000 claims abstract description 43
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000003546 flue gas Substances 0.000 claims abstract description 33
- 238000001035 drying Methods 0.000 claims abstract description 24
- 230000001105 regulatory effect Effects 0.000 claims description 58
- 239000000779 smoke Substances 0.000 claims description 24
- 238000009833 condensation Methods 0.000 claims description 13
- 230000005494 condensation Effects 0.000 claims description 13
- 239000000428 dust Substances 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 13
- 239000001301 oxygen Substances 0.000 description 13
- 229910052760 oxygen Inorganic materials 0.000 description 13
- 238000000197 pyrolysis Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 7
- 239000007921 spray Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
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- 230000000875 corresponding effect Effects 0.000 description 4
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
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- 230000008859 change Effects 0.000 description 2
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- 239000002893 slag Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
-
- 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
- F23G5/44—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
- F23G5/50—Control or safety arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention relates to the technical field of sludge treatment, in particular to a control method of a high-water-content sludge self-maintenance smoldering treatment system. The control method comprises the following steps: and (3) data acquisition: the control system collects data of a combustion chamber temperature sensor arranged in the combustion chamber, a flue gas temperature sensor arranged on a flue, a flue gas pressure sensor, an upper material level sensor in a drying chamber, a middle material level sensor in the combustion chamber and a lower material level sensor in real time; state matching: the control system compares and judges the acquired temperature or pressure data with the initial set value set by the system, and then matches the obtained result with a plurality of states of sludge smoldering. The technical scheme is used for solving the problems that sludge is treated in a smoldering mode in the prior art, the sludge smoldering cannot reach a self-maintenance state, the treatment efficiency is low and the treatment cost is high.
Description
Technical Field
The invention relates to the technical field of sludge treatment, in particular to a control method of a high-water-content sludge self-maintenance smoldering treatment system.
Background
The common treatment modes of sludge include landfill, incineration and composting, wherein the landfill and the composting have the dilemma of occupying a large amount of land, having high salt content and heavy metal content of products, unsmooth composting sales, serious pollution and low recycling level; while incineration can achieve the purposes of volume reduction and weight reduction and resource utilization, the resource utilization is insufficient, and the problem of dioxin pollution exists.
By utilizing the self heat energy of biomass pyrolysis, anaerobic pyrolysis treatment is carried out on the sludge, so that the sludge has excellent cleanliness, and high-value clean fuel gas and fuel oil can be obtained. Pyrolysis of sludge under the condition of complete anaerobic or anoxic is a new technology in rapid development of the state of the art in recent years, and is the comprehensive optimal method for reduction, harmlessness and recycling conversion in the current main treatment method. Research reports show that the pyrolysis smoke amount is 1/2 of the incineration, the NO is 1/2 of the incineration, the HCL is 1/25 of the incineration, and the dust is 1/2 of the incineration;
the organic compound bonds forming the garbage are broken to generate micromolecular substances through pyrolysis, the organic substances are converted into usable energy forms, and the products comprise three types of gas, liquid tar and solid semicoke. The combustible products comprise products of low molecular hydrocarbon such as hydrogen, carbon monoxide, methane and the like which are liquid at normal temperature, and carbon black formed by mixing pure carbon of combustion oils such as acetic acid, acetone, formaldehyde and the like with glass, metal, soil sand and the like is a solid product.
However, at different temperatures, the effects of pyrolysis vary greatly; pyrolysis is basically equivalent to incineration, pyrolysis at a temperature below 450 ℃ is also called smoldering, the smoldering energy conversion rate is high, harmful gas is less generated, and a complete sludge pyrolysis system comprises: the device comprises a receiving, storing and feeding system, a pyrolysis chamber, a gasification chamber, a waste heat utilization system, a tail gas purification system, an ash collection system and a central control system. The sludge smoldering self-maintenance state is achieved, and system parameters influencing the pyrolysis process and effect are quite large, so that the domestic existing low-temperature pyrolysis equipment cannot self-maintain the smoldering state, a large amount of energy is required to be consumed for drying the high-water-content sludge in advance, the treatment speed is low, the self-maintenance pyrolysis is also required to add combustible materials such as fuel oil, coal dust and the like, or a combustion system with additional energy sources, such as an electric heating and natural gas combustion machine and the like, and the sludge treatment cost is quite high.
Disclosure of Invention
Aiming at the defects of the technology, the invention aims to provide a control method of a high-water-content sludge self-maintenance smoldering treatment system, which is used for solving the problems that sludge is treated in a smoldering mode in the prior art, the sludge smoldering is lack to reach a self-maintenance state, and the comprehensive evaluation treatment efficiency is low and the treatment cost is high.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a control method of a high-water-content sludge self-maintenance smoldering treatment system is used for controlling the working state of the smoldering treatment control system to enable the sludge smoldering treatment system to continuously and normally run, and comprises the following steps:
and (3) data acquisition: the control system collects data of a combustion chamber temperature sensor arranged in the combustion chamber, a flue gas temperature sensor arranged on a flue, a flue gas pressure sensor, an upper material level sensor in a drying chamber, a middle material level sensor in the combustion chamber and a lower material level sensor in real time;
State matching: the control system compares and judges the acquired temperature or pressure data with an initial set value set by the system, and then matches the obtained result with a plurality of states of sludge smoldering;
State execution: according to the result of the state matching, the control system sends a designation to one or more execution mechanisms in the blower, the burner, the flue regulating valve, the upper air regulating valve and the lower air regulating valve, and one or more parameters in the temperature and the pressure in the combustion furnace are regulated by changing the working state of the execution mechanisms.
Further defined, state one: the pressure range of the smoke pressure sensor arranged on the flue between the drying chamber and the condensation device is-20 Pa < P 1 < 80Pa, and if P 1 < -20Pa or P 1 > 80Pa is acquired, the control system controls the upper air regulating valve and the lower air regulating valve to be closed and gives an alarm.
Further defined, in the direction of flow of the flue gas, the pressure difference between the previous flue gas pressure sensor and the next flue gas pressure sensor is Δp x, and the preset pipeline section pressure difference value in the control system is P x.
Further defined, state two: if the pressure difference data delta P x≥Px is acquired, the control system sends alarm information to the outside
Further defined, the average value of the temperature sensors of the combustion chamber positioned at the same height in the combustion chamber is t x, and the value of x sequentially increases from the lower part to the upper part of the combustion chamber.
Further defined, state four: when x=1, the collected temperature average value is t 1
If the temperature is more than 200 ℃ and less than 1 ℃ and less than 300 ℃, the control system outputs a command for heating the combustion furnace, namely the control system controls the upper air regulating valve and the lower air regulating valve to be closed and simultaneously controls the combustion machine to be opened;
if t 1 is less than 200 ℃, the control system outputs a command of less materials in the combustion chamber by judging data acquired by the upper material level sensor, the middle material level sensor and the lower material level sensor, namely the control system controls the upper air regulating valve, the lower air regulating valve and the combustion machine to be opened, controls the mixing conveyor to be started, and controls the lifting blanking device to inject the materials into the combustion chamber;
if the temperature is more than 300 ℃ and less than 1 ℃ and less than 450 ℃, the control system outputs a command for keeping the temperature in the combustion chamber, namely the control system controls the upper air regulating valve to be opened, and the lower air regulating valve to be closed, so that the combustion engine is in the lowest gear.
Further defined, when x=2, the collected temperature average value is t 2; if t 2 is more than or equal to 450 ℃, the control system outputs the designation of the excessive temperature in the combustion chamber at the moment, namely, the control system controls the upper air regulating valve and the lower air regulating valve to be opened, and simultaneously, the combustion machine is closed.
Further defined, state four: when x=3-6, the collected temperature average value data is t 3-6 = (t3+t4+t5+t6)/4, and if t 3-6 = (t3+t4+t5+t6)/4 < 200 ℃, the control system outputs a command of heating and drying when the water content of the upper material of the combustion chamber is large, namely the control system controls the upper regulating valve and the lower regulating valve to be closed and simultaneously enables the combustion engine to be opened.
Further defined, state five: the temperature value of the flue gas temperature sensors in the flowing direction of the flue gas is t θ, the temperature of the flue gas temperature sensors arranged on the flue between the condensation device and the cyclone separation device is t 4, and if t 4 is more than 100 ℃, the control system controls the flue regulating valve arranged on the flue between the condensation device and the cyclone separation device to be fully opened.
Further limited, an oxygen analyzer is further arranged on the flue connected with the drying chamber, the control system sends an instruction to the blower through oxygen content data acquired by the oxygen analyzer, and the oxygen content in the combustion furnace is further changed by adjusting the power of the blower.
The technical effects obtained by the invention are as follows:
The control method in the technical scheme can collect information of each component in the control system, make corresponding judgment, then send corresponding instructions to corresponding execution components in the sludge smoldering treatment system according to the judgment result, and make corresponding actions, so that parameters such as temperature, pressure and oxygen concentration in the combustion furnace are changed, the environment in the system is suitable for smoldering reaction, the smoldering reaction in the sludge treatment system can be continuously carried out, phenomena such as flameout are not easy to occur, and the treatment efficiency of sludge is improved.
Drawings
Fig. 1 is a control logic flow chart of a control method in this embodiment.
Fig. 2 is a schematic diagram of the overall mechanism of the smoldering system in this embodiment.
1. An electronic scale; 2. stirring and feeding devices; 3. a daily oil tank; 4. a combustion machine; 5. a charging elevator; 6. a combustion chamber; 7. a discharging device; 8. a slag discharging device; 9. a water condensing device; 10. a blower; 11. a cyclone dust removal device; 12. a spray tower; 13. an integral box; 14. an induced draft fan; 15. and (5) a chimney.
Detailed Description
The following is a further detailed description of the embodiments:
a control method of a high-water-content sludge self-maintenance smoldering treatment system is used for controlling the working state of the smoldering treatment control system to enable the sludge smoldering treatment system to continuously and normally run.
The sludge smoldering treatment system comprises a stirring feeding device 2, a combustion furnace, a smoke treatment device and a smoke discharge device which are sequentially arranged; the inside of the combustion furnace is provided with a drying chamber, a combustion chamber 6 and an ignition chamber from top to bottom, a charging elevator 5 is arranged between the drying chamber and the ignition chamber, a stirring feeding device 2 is connected with a feeding hole arranged at the upper part of the drying chamber through a conveying mechanism, a combustor 4 is arranged at the outer side of the lower part of the ignition chamber, a daily oil tank 3 is arranged as fuel in the combustor, and a discharging device 7 and a slag discharging device 8 which are communicated with the combustion chamber 6 are arranged at the lower end of the ignition chamber; the flue gas treatment device comprises a condensation device 9, a cyclone dust removal device 11, a spray tower 12 and an integral box 13 which are sequentially connected through a flue, the flue communicates a smoke outlet at the upper end of the combustion furnace with a smoke inlet of the flue gas treatment device, the flue communicates the combustion chamber 6 and the ignition chamber with the interior of the flue gas treatment device respectively, an upper air regulating valve and a lower air regulating valve are arranged on the flue respectively, and a blower 10 communicated with the cyclone dust removal device 11 is also arranged at the lower part of the cyclone dust removal device;
The control system comprises a drying chamber temperature sensor, a combustion chamber temperature sensor, a smoke pressure sensor and a flue regulating valve; the drying chamber temperature sensors are symmetrically arranged on the side surface of the interior of the drying chamber, the combustion chamber temperature sensors are symmetrically arranged on the side surface of the interior of the combustion chamber 6, the number of the combustion chamber temperature sensors on the same side is at least 3, the 3 combustion chamber temperature sensors are positioned on the same vertical line, the flue gas temperature sensors and the flue gas pressure sensors are respectively arranged on a flue connected with the condensation device 9, a flue connected with the condensation device 9 and the cyclone separation device, a flue connected with the cyclone separation device and the spray tower 12, a flue connected with the spray tower 12 and the integrated box 13 and a flue connected with the flue gas discharge device according to the flue gas flow direction, and the flue gas regulating valve is used for regulating the flow of air entering the combustion furnace and the flue gas discharge in unit time;
in summary, the control method acting on the control system is as follows:
And (3) data acquisition: the control system collects data of a combustion chamber temperature sensor arranged in the combustion chamber 6, a flue gas temperature sensor arranged on a flue, a flue gas pressure sensor, an upper material level sensor in a drying chamber, a middle material level sensor and a lower material level sensor in the combustion chamber 6 in real time;
State matching: the control system compares and judges the acquired temperature or pressure data with an initial set value set by the system, and then matches the obtained result with a plurality of states of sludge smoldering;
state execution: according to the result of the state matching, the control system sends a designation to one or more actuators of the blower 10, the combustor 4, the flue regulating valve, the upper air regulating valve and the lower air regulating valve, and adjusts one or more parameters of temperature and pressure in the combustion furnace by changing the operating state of the actuators.
As shown in fig. 1, in this embodiment, the number of the temperature sensors in the combustion chamber 6 is 14, since the left side and the right side are symmetrically arranged, the main furnace temperature test points t 1-1、t1-2、t1-3、t1-4、t1-5、t1-6 and t 1-7 are sequentially arranged on one side of the combustion chamber 6 from bottom to top, the main furnace temperature test points t 2-1、t2-2、t2-3、t2-4、t2-5、t2-6 and t 2-7 are sequentially arranged on the other side of the combustion chamber 6 from bottom to top, The drying chamber is piled up with t 1-0 and t 2-0 smoke temperature sensor t θ (theta=3-7) and smoke pressure sensor p n (n=1-5), a smoke temperature sensor t 3 and a smoke pressure sensor P 1 are arranged on the smoke tube between the drying chamber and the condensation device 9, a smoke temperature sensor t 4 and a smoke pressure sensor P 2 are arranged between the condensation device 9 and the cyclone dust collector 11, A smoke temperature sensor t 5 and a smoke pressure sensor P 3 are arranged between the cyclone dust collector 11 and the spray tower 12, a smoke temperature sensor t 6 and a smoke pressure sensor P 4 are arranged between the spray tower 12 and the light integrated box 13, A smoke temperature sensor t 7 and a smoke pressure sensor P 5 are arranged between the integrated box 13 and the induced draft fan 14. FK 2 refers to the upper air regulating valve, FK 1 refers to the lower air regulating valve, induced draft fan 14yf, ld refers to the lower level sensor, lh2 refers to the upper level sensor, and more specifically, the control method is further refined to obtain:
S1: when P1 < -20pa or P1 > 80pa, the control system closes the air regulating valve Fk 1、Fk2 and triggers the alarm module);
S2: when Δp1= (P1-P2) is not less than Pa, when Δp2= (P2-P3) is not less than Pb, when Δp3= (P3-P4) is not less than Pc, when Δp4= (P4-P5) is not less than Pd, the control system triggers the alarm module when any one of the above conditions is satisfied, wherein Pa, pb, pc, pd is the differential pressure set value of the measured pipe section;
S3: when x=1, the number of the groups,
When 200 ℃ is less than tx less than 300 ℃, the control system closes the upper air regulating valve and the lower air regulating valve and enables the combustion engine 4 to be opened to the maximum;
When tx is less than 200 ℃, the control system controls the upper air regulating valve, the lower air regulating valve and the burner 4 to be opened, and controls the stirring feeding device 2 to be started and controls the lifting blanking device to inject materials into the combustion chamber 6;
when the temperature is more than 300 ℃ and less than 450 ℃, the control system controls the upper air regulating valve to be opened, and the lower air regulating valve to be closed, so that the combustor 4 is at the lowest gear;
when x=2, the number of times,
When tx is more than or equal to 450 ℃, the control system controls the upper air regulating valve and the lower air regulating valve to be opened, and simultaneously, the burner 4 is closed; s4: x=3 to 6, when tx= ((t3+t4+t5+t6)/4) < 200 ℃, the control system controls the upper and lower regulating valves to be closed while the burner 4 is turned on;
S5: for the flue regulating valve Fym, when m=3, if t θ =t4 > 100 ℃, the control system controls the flue regulating valve arranged on the flue between the condensation device 9 and the cyclone separation device to be fully opened.
Preferably, the fume emission device comprises a chimney 15 and an induced draft fan 14, the air inlet end of the induced draft fan 14 is connected with the air outlet end of the integrated box 13, the air outlet end of the induced draft fan 14 is connected with the chimney 15, the induced draft fan 14 is helpful for extracting fume in the preamble device, the fume emission effect is improved, and the air pressure in the combustion furnace can be adjusted.
Preferably, an upper material level sensor is arranged in the drying chamber, a middle material level sensor and a lower material level sensor are arranged in the combustion chamber 6 from top to bottom, and through measuring the oxygen content in the exhaust smoke in the combustion furnace, the speed of the air blower 10 for conveying air into the combustion furnace can be controlled, so that the oxygen in the combustion chamber 6 is always kept between the optimal oxygen concentration required by smoldering, the combustion effect of smoldering is ensured, and meanwhile, the conversion from smoldering combustion to open flame combustion can be realized through the monitoring of oxygen and the action of the air blower 10.
Preferably, a flue gas detector interface is arranged on the chimney 15, a flue gas detector fixedly connected with the flue gas detector is arranged on the flue gas detector interface, the upper material level sensor, the middle material level sensor and the lower material level sensor are used for detecting the heights of materials in the drying chamber and the combustion chamber 6, namely, when the height of the materials in the combustion chamber 6 is lower than the height set by the lower material level sensor, the control system controls the feeding lifting machine 5 to move, so that the materials in the drying chamber flow into the combustion chamber 6 until the height of the materials in the combustion chamber 6 reaches the position of the middle material level sensor, and when the height of the materials in the drying chamber is lower than the height of the upper material level sensor, the control system controls the stirring feeding device 2 to feed the materials into the drying chamber, so that the feeding continuity in the combustion furnace is ensured, and meanwhile, the definite reason of temperature change in the combustion furnace can be determined through the detection of the height of the materials, namely, whether the temperature in the combustion furnace is changed due to the change caused by the material addition or the poor smoldering state can be clarified.
Preferably, an oxygen analyzer is further arranged on a pipeline for communicating the drying chamber with the smoke inlet of the condensation device 9, and through measuring the oxygen content in the smoke discharged from the combustion furnace, the speed of the air blower 10 for conveying air into the combustion furnace can be controlled, so that the oxygen in the combustion chamber 6 is always kept between the optimal oxygen concentrations required by smoldering combustion, and the combustion effect of smoldering combustion is ensured.
It should be noted in advance that, in the present invention, unless explicitly specified and limited otherwise, terms such as "mounted," "connected," "fixed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The foregoing is merely exemplary embodiments of the present application, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present application, and these should also be considered as the scope of the present application, which does not affect the effect of the implementation of the present application and the utility of the patent. The protection scope of the present application is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (1)
1. The control method of the high-water-content sludge self-maintenance smoldering treatment system is used for controlling the working state of the smoldering treatment control system to ensure that the sludge smoldering treatment system continuously and normally operates, and is characterized by comprising the following steps of:
and (3) data acquisition: the control system collects data of a combustion chamber temperature sensor arranged in the combustion chamber, a flue gas temperature sensor arranged on a flue, a flue gas pressure sensor, an upper material level sensor in a drying chamber, a middle material level sensor in the combustion chamber and a lower material level sensor in real time; wherein the flue is respectively provided with an upper air regulating valve and a lower air regulating valve;
State matching: the control system compares and judges the acquired temperature or pressure data with an initial set value set by the system, and then matches the obtained result with a plurality of states of sludge smoldering;
State execution: according to the result of state matching, the control system sends out instructions to one or more execution mechanisms in the blower, the burner, the flue regulating valve, the upper air regulating valve and the lower air regulating valve, and one or more parameters in the temperature and the pressure in the combustion furnace are regulated by changing the working state of the execution mechanism; the blower is communicated with the lower part of the cyclone dust collector;
The state execution includes state one: the pressure range of a smoke pressure sensor arranged on a flue between the drying chamber and the condensation device is-20 Pa < P 1 < 80Pa, and if P 1 < -20Pa or P 1 > 80Pa is acquired, the control system controls the upper air regulating valve and the lower air regulating valve to be closed and gives an alarm;
In the flow direction of the flue gas, the pressure difference between the front flue gas pressure sensor and the rear flue gas pressure sensor is delta P x, and the preset pipeline section pressure difference value in the control system is P x;
The state execution includes state two: if the pressure difference data delta P x≥Px is acquired, the control system sends alarm information to the outside;
The average value of the temperature sensors of the combustion chamber positioned at the same height in the combustion chamber is t x, and the value of x is sequentially increased from the lower part to the upper part of the combustion chamber;
The state execution includes state three: when x=1, the collected temperature average value is t 1 ;
If the temperature is more than 200 ℃ and less than 1 ℃ and less than 300 ℃, the control system outputs a command for heating the combustion furnace, namely the control system controls the upper air regulating valve and the lower air regulating valve to be closed and simultaneously controls the combustion machine to be opened;
if t 1 is less than 200 ℃, the control system outputs a command of less materials in the combustion chamber by judging data acquired by the upper material level sensor, the middle material level sensor and the lower material level sensor, namely the control system controls the upper air regulating valve, the lower air regulating valve and the combustion machine to be opened, controls the mixing conveyor to be started, and controls the lifting blanking device to inject the materials into the combustion chamber;
If the temperature is more than 300 ℃ and less than 1 ℃ and less than 450 ℃, the control system outputs a command for keeping the temperature in the combustion chamber, namely the control system controls the upper air regulating valve to be opened, and the lower air regulating valve to be closed, so that the combustion engine is at the lowest gear;
When x=2, the collected temperature average value is t 2; if t 2 is more than or equal to 450 ℃, the control system outputs the designation of the excessive temperature in the combustion chamber at the moment, namely the control system controls the upper air regulating valve and the lower air regulating valve to be opened, and simultaneously, the combustion machine is closed;
The state execution includes state four: when x=3-6, the collected temperature average value data is t 3-6 = (t3+t4+t5+t6)/4, and if t 3-6 = (t3+t4+t5+t6)/4 < 200 ℃, the control system outputs a command that the water content of the upper material of the combustion chamber is large and heating and drying are needed, namely the control system controls the upper regulating valve and the lower regulating valve to be closed and simultaneously enables the combustion machine to be opened;
the state execution includes state five: and when the temperature value of the flue gas temperature sensors in the flowing direction of the flue gas is t θ and the temperature of the flue gas temperature sensors arranged on the flue between the condensation device and the cyclone separation device is greater than 100 ℃, the control system controls the flue regulating valve arranged on the flue between the condensation device and the cyclone separation device to be fully opened.
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