CN115597054A - Fluidized bed boiler mixes and burns marsh gas system - Google Patents
Fluidized bed boiler mixes and burns marsh gas system Download PDFInfo
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- CN115597054A CN115597054A CN202211291522.2A CN202211291522A CN115597054A CN 115597054 A CN115597054 A CN 115597054A CN 202211291522 A CN202211291522 A CN 202211291522A CN 115597054 A CN115597054 A CN 115597054A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/22—Fuel feeders specially adapted for fluidised bed combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/28—Control devices specially adapted for fluidised bed, combustion apparatus
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Abstract
The invention relates to the technical field of a fluidized bed boiler mixed combustion biogas system, in particular to a fluidized bed boiler mixed combustion biogas system, aiming at the problems that the existing fluidized bed boiler mixed combustion biogas system technology still adopts biogas for desulfurization and then performs combustion power generation, and pollution gas is easy to leak in the using process of the biogas, so that the biogas utilization cost is high and the environmental pollution rate is high.
Description
Technical Field
The invention relates to the technical field of a fluidized bed boiler co-combustion biogas system, in particular to a fluidized bed boiler co-combustion biogas system.
Background
As is well known, paper making enterprises are large in power consumption, and energy conservation and emission reduction are problems to be faced by each enterprise today when carbon emission is increasingly tense. At present, the energy composition of China still mainly uses coal, and how to improve the combustion efficiency of a coal-fired boiler, reduce carbon emission and optimize the energy structure is the problem to be solved by each paper-making enterprise. The paper industry is an industry closely related to the national economy and social culture industry. At present, the papermaking industry in China is facing great demands brought by the rapid development of culture, information and industry and the upgrade of consumption structure, but the papermaking industryThe industry pollutes water resources of China most seriously. In the sewage treatment system, the high-concentration organic wastewater is mainly treated by anaerobic treatment, and each kilogram of COD can produce CH 4 (methane) 0.5m 3 Enterprises need to obtain sustainable development and have irreparable responsibility for protecting the environment. Therefore, the utilization of the methane for power generation is an effective energy-saving mode for saving energy and resources, reducing enterprise cost and solving the problem of environmental pollution caused by methane emission, and is beneficial to the nation and people.
Biogas generated by anaerobic treatment of domestic and foreign wastewater is generally used as a domestic fuel, and a few enterprises directly burn and evacuate; the other method is used for power generation, and the biogas combustion power generation mainly adopts a biogas desulfurization method and then uses a gas generator set for combustion power generation, but the method needs to purchase a new gas generator set and matched equipment, has large investment and is not economical enough for general paper-making enterprises with large biogas production. For enterprises making pulp and paper, the biogas is a clean energy which can be utilized, if the biogas is directly introduced into a boiler to be mixed with pulverized coal for power generation, resources are saved, the environment is protected, and economic benefits can be created for the enterprises.
However, the existing technology of the fluidized bed boiler co-combustion biogas system still has the problems that biogas is adopted for desulfurization and then is combusted for power generation, and pollution gas is easy to leak in the using process of biogas, so that the biogas utilization cost is high and the environmental pollution rate is high, and therefore, the fluidized bed boiler co-combustion biogas system is provided for solving the problems.
Disclosure of Invention
The invention aims to solve the problems that the existing technology of the fluidized bed boiler co-combustion biogas system still adopts biogas for desulfurization and then carries out combustion power generation, and pollution gas is easy to leak in the use process of the biogas, so that the biogas utilization cost is high, the environmental pollution rate is high, and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fluidized bed boiler co-combustion biogas system comprises a design module, an acquisition module, an assembly module, a construction module, a pretreatment module, a test module, a real-time detection module, a data observation module, a judgment module, a processing module and a use module, wherein the design module is connected with the acquisition module, the acquisition module is respectively connected with the assembly module, the processing module and the use module, the assembly module is connected with the construction module, the construction module is connected with the pretreatment module, the pretreatment module is connected with the test module, the test module is connected with the real-time detection module, the real-time detection module is connected with the data observation module, the data observation module is connected with the judgment module, and the judgment module is connected with the processing module;
preferably, the design module is used for designing the fluidized bed boiler co-combustion biogas system, the acquisition module is used for acquiring devices and biogas contained in the fluidized bed boiler co-combustion biogas system, the assembly module is used for assembling the acquired devices at fixed points, the construction module is used for constructing the fluidized bed boiler co-combustion biogas system through a design drawing, the preprocessing module is used for preprocessing the fluidized bed boiler co-combustion biogas system, the test module is used for testing the constructed fluidized bed boiler co-combustion biogas system, the real-time detection module is used for detecting pressure data of the fluidized bed boiler co-combustion biogas system in the test process in real time, the data observation module is used for observing pressure data displayed by a gas tightness detector in the test process, the judgment module is used for judging the observation results, the processing module is used for processing the judgment results, and the use module is used for using the fluidized bed boiler co-combustion biogas system;
the construction method comprises the following steps:
s1: constructing a system: designing the fluidized bed boiler co-combustion biogas system by a professional according to requirements, and constructing the fluidized bed boiler co-combustion biogas system through a design drawing;
s2: the test was carried out: testing the constructed fluidized bed boiler co-combustion biogas system by professional staff;
s3: acquiring biogas: treating the EGSB anaerobic tank by a professional to obtain biogas;
s4: the use is as follows: the constructed mixed-burning biogas system of the fluidized bed boiler is used by professionals;
preferably, in S1, a professional person designs the fluidized bed boiler co-combustion biogas system according to requirements, and constructs the fluidized bed boiler co-combustion biogas system according to a design drawing, wherein the design requirement is that a device included in the fluidized bed boiler co-combustion biogas system needs to include an EGSB anaerobic tank, a biogas pressure stabilizing tank, a booster fan, a biogas burner, a valve, a pipeline, and a co-combustion controller, the booster fan adopts a roots blower, the valve and the pipeline adopt stainless steel materials, the biogas burner and the boiler adopt a dedicated biogas burner of the same model, the biogas burner has a design for combustion characteristics, operation parameters, and biogas characteristics of a circulating fluidized bed boiler, the co-combustion controller adopts a siemens PLC program controller and a PID automatic control, the frequency of the roots blower is adjusted by taking a gas level of a gas storage tank and a pipeline pressure as parameters, the gas level and the pipeline pressure as parameters, the gas burner is led to a boiler centralized control room remote control system, the fluidized bed boiler combustion biogas system has a safety protection function, wherein the safety protection function includes flameout protection, flameout prevention and flameout protection, explosion protection, overpressure protection, shutdown protection, and linked low-pressure protection, and a special device acquisition is obtained by the professional person when the design drawing is used to obtain the fluidized bed boiler co-combustion device, and the design drawing to obtain the fluidized bed boiler co-combustion device, and obtain the design drawing, and then the fluidized bed boiler co-combustion device, and obtain the design drawing;
preferably, in S2, a professional tests the constructed fluidized bed boiler co-combustion biogas system, wherein the professional pretreats the fluidized bed boiler co-combustion biogas system before testing, the professional places the fluidized bed boiler co-combustion biogas system in a sealed environment, inflates an EGSB anaerobic tank gas outlet under the condition that all contact surfaces are completely sealed, and simultaneously, the professional detects pressure data of the fluidized bed boiler co-combustion biogas system in real time through an air tightness detector, wherein during real-time detection, the connection of adjacent devices is provided with the air tightness detector, the professional observes the pressure data through the air tightness detector, judges whether the connection has a leakage condition or not through observation results, and processes through judgment results, wherein the judgment results show that the connection has no leakage condition, and does not process the connection, uses the fluidized bed boiler co-combustion biogas system, stops testing if the judgment results show that the connection has a leakage condition, reconnects the connection of the leakage condition, and processes through the fluidized bed boiler co-combustion biogas system, and tests the judgment results show that the fluidized bed boiler co-combustion biogas system has no leakage condition;
preferably, in S3, handle by the professional and acquire marsh gas to the EGSB anaerobic pool, wherein mix by the professional through the fluidized bed boiler who constructs when handling earlier and burn the valve of marsh gas system to the EGSB anaerobic pool and carry out remote closing control, control is added the anaerobe of specific proportion in to the EGSB anaerobic pool by the professional after accomplishing, add and open the inside stirring rod switch of EGSB anaerobic pool by the professional after accomplishing and carry out the stirring processing, wherein the stirring rate of stirring rod is 20r/min when carrying out the stirring processing, stirring time is 2min, it is right after the stirring is accomplished the EGSB anaerobic pool is stood the fermentation and is handled, wherein when carrying out the fermentation of stewing through carrying out the catabolism to the waste water in the EGSB anaerobic pool to the anaerobe and obtain marsh gas, and the time of stewing is 72h when carrying out the fermentation processing of stewing, wherein specific proportion adds the volume for the anaerobe: the total volume of the wastewater contained in the EGSB anaerobic tank is 3:97 and the anaerobes are formed by mixing 60% of moderate anaerobes, 30% of aerotolerant anaerobes and 10% of anaerobes sensitive to oxygen extremes;
preferably, in S4, mix by the professional and burn the biogas system and use the fluidized bed boiler who constitutes, mix by the professional and burn the valve of biogas system to the EGSB anaerobism pond through the fluidized bed boiler who constitutes when wherein using, control through the long-range open control of valve output EGSB anaerobism pond after the control is accomplished, and carry out steady voltage processing to the marsh gas of input through marsh gas surge tank, pressurize the marsh gas after the steady voltage through booster fan, and carry to boiler furnace through the built-up pipeline, wherein placed the coal in advance in the boiler, and 2 marsh gas burners of every boiler configuration, wherein marsh gas burners are installed respectively on the furnace wall of boiler both sides, boiler coal operation back is automatic to spouting burning marsh gas in the boiler furnace, wherein the gas house steward is equipped with the gas trip valve to the person in charge before every boiler furnace, and the marsh gas person in charge in front of every boiler divides the branch pipe, inserts the combustor on the furnace wall of both sides through adjusting control valves two ways.
Compared with the prior art, the invention has the beneficial effects that:
1. by constructing the mixed-combustion biogas system of the fluidized bed boiler, the device is simple and low in cost, and the biogas utilization cost is reduced;
2. by using clean energy biogas as doping gas and carrying out gas tightness test on the system device, leakage of polluting gas is avoided, and the environmental pollution rate is reduced.
The invention aims to construct a fluidized bed boiler mixed-combustion biogas system, which has the advantages of simple device and low cost, reduces the biogas utilization cost, simultaneously avoids leakage of polluting gas and reduces the environmental pollution rate by using clean energy biogas as a doping gas and carrying out an air tightness test on the system device.
Drawings
FIG. 1 is a structural diagram of a fluidized bed boiler co-combustion biogas system according to the present invention;
FIG. 2 is a flow chart of the system construction of a fluidized bed boiler co-combustion biogas system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example one
Referring to fig. 1, a fluidized bed boiler co-combustion biogas system comprises a design module, an acquisition module, an assembly module, a construction module, a pretreatment module, a test module, a real-time detection module, a data observation module, a judgment module, a processing module and a use module, wherein the design module is connected with an acquisition module, the acquisition module is respectively connected with the assembly module, the processing module and the use module, the assembly module is connected with a construction module, the construction module is connected with a pretreatment module, the pretreatment module is connected with a test module, the test module is connected with the real-time detection module, the real-time detection module is connected with the data observation module, the data observation module is connected with the judgment module, the judgment module is connected with the processing module, the design module is used for designing the fluidized bed boiler mixed-combustion biogas system, the acquisition module is used for acquiring devices and biogas contained in the fluidized bed boiler co-combustion biogas system, the assembly module is used for carrying out fixed-point assembly on the acquired devices, the construction module is used for constructing the mixed-burning biogas system of the fluidized bed boiler through a design drawing, the pretreatment module is used for pretreating the mixed-burning biogas system of the fluidized bed boiler, the test module tests the constructed mixed combustion biogas system of the fluidized bed boiler, the real-time detection module is used for detecting the pressure data of the mixed combustion biogas system of the fluidized bed boiler in the test process in real time, the data observation module is used for observing the pressure data displayed by the air tightness detector in the test process, the judgment module is used for judging the observation result, the processing module is used for processing the judgment result, and the using module is used for using the fluidized bed boiler co-combustion biogas system;
referring to fig. 2, the construction method thereof includes the steps of:
s1: constructing a system: designing the fluidized bed boiler co-combustion biogas system by a professional according to requirements, constructing the fluidized bed boiler co-combustion biogas system through a design drawing, wherein the design requirement is that a device contained in the fluidized bed boiler co-combustion biogas system comprises an EGSB (expanded granular sludge bed) anaerobic tank, a biogas pressure stabilizing tank, a booster fan, a biogas burner, a valve, a pipeline and a co-combustion controller when the design is carried out, the booster fan adopts a Roots blower, the valve and the pipeline are made of stainless steel materials, the biogas burner and the boiler adopt a special biogas burner matched with the same model, the biogas burner has the design aiming at the combustion characteristic, the operation parameter and the biogas characteristic of the circulating fluidized bed boiler, the co-combustion controller adopts a West door PLC (programmable logic controller) and PID (proportion integration differentiation) automatic control, the frequency of the Roots blower is adjusted by taking the gas level of a gas storage tank and the pressure of the pipeline as parameters, the gas storage tank and the pipeline pressure as the parameters, the gas storage tank and the special biogas burner are connected to a remote control room of the boiler, meanwhile, the fluidized bed boiler co-combustion biogas system has a safety protection function, wherein the safety protection function comprises power failure protection, flameout protection, the professional personnel obtain the devices when the design is carried out, the design and obtain the devices of the fluidized bed boiler co-combustion device, and the specialized devices when the fluidized bed boiler co-combustion device, the specialized devices are obtained by the specialized boiler assembly of the specialized boiler;
s2: the test was carried out: testing a constructed fluidized bed boiler co-combustion biogas system by a professional, wherein the professional preprocesses the fluidized bed boiler co-combustion biogas system before testing, the professional places the fluidized bed boiler co-combustion biogas system in a sealed environment during preprocessing, and inflates an EGSB anaerobic tank air outlet under the condition of completely sealing all contact surfaces, meanwhile, the professional detects pressure data of the fluidized bed boiler co-combustion biogas system in real time through an air tightness detector, the professional observes the pressure data through the air tightness detector, judges whether the connection part has leakage conditions or not through observation results, and processes through judgment results, wherein the judgment results show that the connection part has no leakage condition or not, and uses the fluidized bed boiler co-combustion biogas system, the judgment results show that the connection part has leakage conditions, stops the test, the professional reconnects the connection part with leakage conditions, and conducts the test on the newly connected fluidized bed boiler co-combustion biogas system again, and processes through the results until the judgment results show that the connection part has no leakage conditions, and the fluidized bed boiler co-combustion biogas system stops using tests;
s3: obtaining biogas: handle by the professional and obtain marsh gas to EGSB anaerobic tank, wherein mix by the professional through the fluidized bed boiler who constructs earlier when handling and burn the valve of marsh gas system to the EGSB anaerobic tank and carry out remote closing control, control is added the anaerobe of specific proportion in to the EGSB anaerobic tank by the professional after accomplishing, add and open the inside stirring rod switch of EGSB anaerobic tank by the professional and carry out stirring processing after accomplishing, wherein the stirring rate of stirring rod is 20r/min when carrying out stirring processing, stirring time is 2min, it is right after the stirring is accomplished EGSB anaerobic tank carries out the fermentation treatment that stews, wherein when carrying out the fermentation treatment that stews through carrying out catabolism to the waste water in the anaerobe pair EGSB anaerobic tank to obtain marsh gas, and stew time when carrying out the fermentation treatment that stews is 72h, wherein specific proportion adds the volume for the anaerobe: the total volume of the wastewater contained in the EGSB anaerobic tank is 3:97 and the anaerobe is formed by mixing 60% of moderate anaerobe, 30% of aerotolerant anaerobe and 10% of anaerobe sensitive to oxygen extreme;
s4: the use is as follows: mix the marsh gas system of burning by the professional to the fluidized bed boiler who constructs and use, mix by the professional when wherein carrying out the use and burn the valve of marsh gas system to the EGSB anaerobism pond through the fluidized bed boiler who constructs and carry out long-range open control, control is accomplished the marsh gas of fermentation in the back through the valve output EGSB anaerobism pond, and carry out steady voltage through marsh gas surge tank to the marsh gas of input and handle, pressurize through booster fan marsh gas after the steady voltage, and carry to boiler furnace before through the built-up pipeline, wherein placed the coal in advance in the boiler, and 2 marsh gas combustors of every boiler configuration, wherein marsh gas combustor installs respectively on the brickwork of boiler both sides, automatic spout burning marsh gas in the boiler furnace after the coal-fired operation of boiler, wherein marsh gas house steward is equipped with the gas trip valve to the person in charge before every boiler furnace, and the marsh gas in front of every boiler is responsible for two way branch pipes of shunting, through the combustor on the access both sides brickwork of adjusting control valves.
Example two
Referring to fig. 1, a fluidized bed boiler co-combustion biogas system comprises a design module, an acquisition module, an assembly module, a construction module, a pretreatment module, a test module, a real-time detection module, a data observation module, a judgment module, a processing module and a use module, wherein the design module is connected with an acquisition module, the acquisition module is respectively connected with the assembly module, the processing module and the use module, the assembly module is connected with a construction module, the construction module is connected with a pretreatment module, the pretreatment module is connected with a test module, the test module is connected with the real-time detection module, the real-time detection module is connected with the data observation module, the data observation module is connected with the judgment module, the judgment module is connected with the processing module, the design module is used for designing the fluidized bed boiler mixed-combustion biogas system, the acquisition module is used for acquiring devices and biogas contained in the fluidized bed boiler co-combustion biogas system, the assembly module is used for carrying out fixed-point assembly on the acquired devices, the construction module is used for constructing the fluidized bed boiler co-combustion biogas system through a design drawing, the pretreatment module is used for pretreating the fluidized bed boiler co-combustion biogas system, the test module tests the constructed mixed combustion biogas system of the fluidized bed boiler, the real-time detection module is used for detecting the pressure data of the mixed combustion biogas system of the fluidized bed boiler in the test process in real time, the data observation module is used for observing the pressure data displayed by the air tightness detector in the test process, the judgment module is used for judging the observation result, the processing module is used for processing the judgment result, and the using module is used for using the fluidized bed boiler co-combustion biogas system;
referring to fig. 2, the construction method thereof includes the steps of:
s1: constructing a system: designing the fluidized bed boiler co-combustion biogas system by a professional according to requirements, constructing the fluidized bed boiler co-combustion biogas system through a design drawing, and acquiring devices contained in the fluidized bed boiler co-combustion biogas system through the design drawing by the professional after the design is finished, wherein the devices are all explosion-proof when the devices are acquired, and assembling the acquired devices at fixed points through the design drawing by the professional after the devices are acquired to acquire the fluidized bed boiler co-combustion biogas system;
s2: the test was carried out: testing a constructed fluidized bed boiler co-combustion biogas system by a professional, wherein the professional preprocesses the fluidized bed boiler co-combustion biogas system before testing, the professional places the fluidized bed boiler co-combustion biogas system in a sealed environment during preprocessing, and inflates an EGSB anaerobic tank air outlet under the condition of completely sealing all contact surfaces, meanwhile, the professional detects pressure data of the fluidized bed boiler co-combustion biogas system in real time through an air tightness detector, the professional observes the pressure data through the air tightness detector, judges whether the connection part has leakage conditions or not through observation results, and processes through judgment results, wherein the judgment results show that the connection part has no leakage condition or not, and uses the fluidized bed boiler co-combustion biogas system, the judgment results show that the connection part has leakage conditions, stops the test, the professional reconnects the connection part with leakage conditions, and conducts the test on the newly connected fluidized bed boiler co-combustion biogas system again, and processes through the results until the judgment results show that the connection part has no leakage conditions, and the fluidized bed boiler co-combustion biogas system stops using tests;
s3: obtaining biogas: handle by the professional and obtain marsh gas to EGSB anaerobic tank, wherein mix by the professional through the fluidized bed boiler who constructs earlier when handling and burn the valve of marsh gas system to the EGSB anaerobic tank and carry out remote closing control, control is added the anaerobe of specific proportion in to the EGSB anaerobic tank by the professional after accomplishing, add and open the inside stirring rod switch of EGSB anaerobic tank by the professional and carry out stirring processing after accomplishing, wherein the stirring rate of stirring rod is 20r/min when carrying out stirring processing, stirring time is 2min, it is right after the stirring is accomplished EGSB anaerobic tank carries out the fermentation treatment that stews, wherein when carrying out the fermentation treatment that stews through carrying out catabolism to the waste water in the anaerobe pair EGSB anaerobic tank to obtain marsh gas, and stew time when carrying out the fermentation treatment that stews is 72h, wherein specific proportion adds the volume for the anaerobe: the total volume of the wastewater contained in the EGSB anaerobic tank is 3:97 and the anaerobes are formed by mixing 60% of moderate anaerobes, 30% of aerotolerant anaerobes and 10% of anaerobes sensitive to oxygen extremes;
s4: the following were used: mix the marsh gas system of burning by the professional to the fluidized bed boiler who constructs and use, mix by the professional when wherein carrying out the use and burn the valve of marsh gas system to the EGSB anaerobism pond through the fluidized bed boiler who constructs and carry out long-range open control, control is accomplished the marsh gas of fermentation in the back through the valve output EGSB anaerobism pond, and carry out steady voltage through marsh gas surge tank to the marsh gas of input and handle, pressurize through booster fan marsh gas after the steady voltage, and carry to boiler furnace before through the built-up pipeline, wherein placed the coal in advance in the boiler, and 2 marsh gas combustors of every boiler configuration, wherein marsh gas combustor installs respectively on the brickwork of boiler both sides, automatic spout burning marsh gas in the boiler furnace after the coal-fired operation of boiler, wherein marsh gas house steward is equipped with the gas trip valve to the person in charge before every boiler furnace, and the marsh gas in front of every boiler is responsible for two way branch pipes of shunting, through the combustor on the access both sides brickwork of adjusting control valves.
EXAMPLE III
Referring to fig. 1, a fluidized bed boiler co-combustion biogas system comprises a design module, an acquisition module, an assembly module, a construction module, a pretreatment module, a test module, a real-time detection module, a data observation module, a judgment module, a processing module and a use module, wherein the design module is connected with an acquisition module, the acquisition module is respectively connected with the assembly module, the processing module and the use module, the assembly module is connected with a construction module, the construction module is connected with a pretreatment module, the pretreatment module is connected with a test module, the test module is connected with the real-time detection module, the real-time detection module is connected with the data observation module, the data observation module is connected with the judgment module, the judgment module is connected with the processing module, the design module is used for designing the fluidized bed boiler mixed-combustion biogas system, the acquisition module is used for acquiring devices and biogas contained in the fluidized bed boiler co-combustion biogas system, the assembly module is used for carrying out fixed-point assembly on the acquired devices, the construction module is used for constructing the mixed-burning biogas system of the fluidized bed boiler through a design drawing, the pretreatment module is used for pretreating the mixed-burning biogas system of the fluidized bed boiler, the test module tests the constructed fluidized bed boiler co-combustion biogas system, the real-time detection module is used for detecting the pressure data of the fluidized bed boiler co-combustion biogas system in the test process in real time, the data observation module is used for observing the pressure data displayed by the air tightness detector in the test process, the judgment module is used for judging the observation result, the processing module is used for processing the judgment result, and the using module is used for using the mixed-burning biogas system of the fluidized bed boiler;
referring to fig. 2, the construction method thereof includes the steps of:
s1: constructing a system: designing the fluidized bed boiler co-combustion biogas system by a professional according to requirements, constructing the fluidized bed boiler co-combustion biogas system through a design drawing, wherein the design requirement is that a device contained in the fluidized bed boiler co-combustion biogas system comprises an EGSB (expanded granular sludge bed) anaerobic tank, a biogas pressure stabilizing tank, a booster fan, a biogas burner, a valve, a pipeline and a co-combustion controller when the design is carried out, the booster fan adopts a Roots blower, the valve and the pipeline are made of stainless steel materials, the biogas burner and the boiler adopt a special biogas burner matched with the same model, the biogas burner has the design aiming at the combustion characteristic, the operation parameter and the biogas characteristic of the circulating fluidized bed boiler, the co-combustion controller adopts a West door PLC (programmable logic controller) and PID (proportion integration differentiation) automatic control, the frequency of the Roots blower is adjusted by taking the gas level of a gas storage tank and the pressure of the pipeline as parameters, the gas storage tank and the pipeline pressure as the parameters, the gas storage tank and the special biogas burner are connected to a remote control room of the boiler, meanwhile, the fluidized bed boiler co-combustion biogas system has a safety protection function, wherein the safety protection function comprises power failure protection, flameout protection, the professional personnel obtain the devices when the design is carried out, the design and obtain the devices of the fluidized bed boiler co-combustion device, and the specialized devices when the fluidized bed boiler co-combustion device, the specialized devices are obtained by the specialized boiler assembly of the specialized boiler;
s2: acquiring biogas: handle by the professional and obtain marsh gas to EGSB anaerobic tank, wherein mix by the professional through the fluidized bed boiler who constructs earlier when handling and burn the valve of marsh gas system to the EGSB anaerobic tank and carry out remote closing control, control is added the anaerobe of specific proportion in to the EGSB anaerobic tank by the professional after accomplishing, add and open the inside stirring rod switch of EGSB anaerobic tank by the professional and carry out stirring processing after accomplishing, wherein the stirring rate of stirring rod is 20r/min when carrying out stirring processing, stirring time is 2min, it is right after the stirring is accomplished EGSB anaerobic tank carries out the fermentation treatment that stews, wherein when carrying out the fermentation treatment that stews through carrying out catabolism to the waste water in the anaerobe pair EGSB anaerobic tank to obtain marsh gas, and stew time when carrying out the fermentation treatment that stews is 72h, wherein specific proportion adds the volume for the anaerobe: the total volume of the wastewater contained in the EGSB anaerobic tank is 3:97 and the anaerobes are formed by mixing 60% of moderate anaerobes, 30% of aerotolerant anaerobes and 10% of anaerobes sensitive to oxygen extremes;
s3: the following were used: mix the marsh gas system of burning by the professional to the fluidized bed boiler who constructs and use, mix by the professional when wherein carrying out the use and burn the valve of marsh gas system to the EGSB anaerobism pond through the fluidized bed boiler who constructs and carry out long-range open control, control is accomplished the marsh gas of fermentation in the back through the valve output EGSB anaerobism pond, and carry out steady voltage through marsh gas surge tank to the marsh gas of input and handle, pressurize through booster fan marsh gas after the steady voltage, and carry to boiler furnace before through the built-up pipeline, wherein placed the coal in advance in the boiler, and 2 marsh gas combustors of every boiler configuration, wherein marsh gas combustor installs respectively on the brickwork of boiler both sides, automatic spout burning marsh gas in the boiler furnace after the coal-fired operation of boiler, wherein marsh gas house steward is equipped with the gas trip valve to the person in charge before every boiler furnace, and the marsh gas in front of every boiler is responsible for two way branch pipes of shunting, through the combustor on the access both sides brickwork of adjusting control valves.
Example four
Referring to fig. 1, a fluidized bed boiler co-combustion biogas system comprises a design module, an acquisition module, an assembly module, a construction module, a pretreatment module, a test module, a real-time detection module, a data observation module, a judgment module, a processing module and a use module, wherein the design module is connected with an acquisition module, the acquisition module is respectively connected with the assembly module, the processing module and the use module, the assembly module is connected with a construction module, the construction module is connected with a pretreatment module, the pretreatment module is connected with a test module, the test module is connected with the real-time detection module, the real-time detection module is connected with the data observation module, the data observation module is connected with the judgment module, the judgment module is connected with the processing module, the design module is used for designing the fluidized bed boiler mixed-combustion biogas system, the acquisition module is used for acquiring devices and biogas contained in the fluidized bed boiler co-combustion biogas system, the assembly module is used for carrying out fixed-point assembly on the acquired devices, the construction module is used for constructing the fluidized bed boiler co-combustion biogas system through a design drawing, the pretreatment module is used for pretreating the fluidized bed boiler co-combustion biogas system, the test module tests the constructed fluidized bed boiler co-combustion biogas system, the real-time detection module is used for detecting the pressure data of the fluidized bed boiler co-combustion biogas system in the test process in real time, the data observation module is used for observing the pressure data displayed by the air tightness detector in the test process, the judgment module is used for judging the observation result, the processing module is used for processing the judgment result, and the using module is used for using the fluidized bed boiler co-combustion biogas system;
referring to fig. 2, the construction method thereof includes the following steps:
s1: constructing a system: designing the fluidized bed boiler co-combustion biogas system by a professional according to requirements, constructing the fluidized bed boiler co-combustion biogas system by a design drawing, wherein the design requirement is that a device contained in the fluidized bed boiler co-combustion biogas system comprises an EGSB (expanded granular sludge bed) anaerobic tank, a biogas pressure stabilizing tank, a booster fan, a biogas burner, a valve, a pipeline and a co-combustion controller, the booster fan adopts a Roots fan, the valve and the pipeline are made of stainless steel materials, the biogas burner and the boiler adopt a special biogas burner matched with the same model, the biogas burner is designed according to the combustion characteristics, operation parameters and biogas characteristics of a circulating fluidized bed boiler, the co-combustion controller adopts a Siemens PLC (programmable logic controller) and a PID (proportion integration differentiation) for automatic control, the frequency of the Roots fan is adjusted by taking the gas level of a gas storage tank and the pressure of the pipeline as parameters, the gas storage tank and the pipeline pressure as a remote control chamber, the fluidized bed boiler co-combustion biogas system has a safety protection function, the safety protection function is realized by the professional staff after the design, the safety protection function comprises power failure protection, flameout prevention and backfire protection, the main pipe low-pressure protection and explosion-prevention protection before the pressurization fan, the boiler co-combustion area chain low-combustion protection device is obtained by the professional design drawing acquisition of the fluidized bed boiler co-combustion device, and the specialized boiler co-combustion device is obtained by the professional design drawing, and the design drawing is obtained by the professional design drawing, and the fluidized bed boiler co-combustion device is obtained by the professional design, and the specialized fluidized bed boiler co-combustion controller, and the design is obtained by the specialized device is obtained by the professional design drawing when the design drawing is obtained by the specialized fluidized bed boiler co-combustion controller;
s2: the test was carried out: testing a constructed fluidized bed boiler mixed combustion biogas system by a professional, wherein the fluidized bed boiler mixed combustion biogas system is pretreated by the professional before the testing is carried out, the professional places the fluidized bed boiler mixed combustion biogas system in a sealed environment during the pretreatment, and inflates an EGSB anaerobic tank gas outlet under the condition of completely sealing all contact surfaces, meanwhile, the professional detects pressure data of the fluidized bed boiler mixed combustion biogas system in real time through a gas tightness detector, the professional observes the pressure data through the gas tightness detector, judges whether the connection is in a leakage state or not through observation results, and processes the judgment results, wherein the judgment results show that the connection is not in a leakage state, the fluidized bed boiler mixed combustion biogas system is used, the judgment results show that the connection is in a leakage state, stops the testing, the professional reconnects the connection in a leakage state, and performs the testing on the newly connected fluidized bed boiler mixed combustion biogas system, and processes the mixed combustion biogas system again through the judgment results until the connection is in a biogas state, and the judgment results show that the fluidized bed boiler mixed combustion biogas system is in a leakage state, and the connection is in a heavy combustion biogas system, and the fluidized bed boiler mixed combustion biogas system is used;
s3: acquiring biogas: processing an EGSB anaerobic pool by a professional to obtain biogas, wherein the professional performs remote closing control on a valve of the EGSB anaerobic pool through a constructed fluidized bed boiler mixed-burning biogas system during processing, the professional adds anaerobic bacteria in a specific proportion into the EGSB anaerobic pool after the control is completed, the professional opens a stirring rod switch in the EGSB anaerobic pool for stirring processing after the addition is completed, the stirring speed of the stirring rod is 20r/min during the stirring processing, the stirring time is 2min, the EGSB anaerobic pool is subjected to standing fermentation processing after the stirring is completed, the anaerobic bacteria is decomposed and metabolized to wastewater in the EGSB anaerobic pool during the standing fermentation processing to obtain biogas, and the standing fermentation processing is performed for 72h;
s4: the use is as follows: mix the marsh gas system of burning by the professional to the fluidized bed boiler who constructs and use, mix by the professional when wherein carrying out the use and burn the valve of marsh gas system to the EGSB anaerobism pond through the fluidized bed boiler who constructs and carry out long-range open control, control is accomplished the marsh gas of fermentation in the back through the valve output EGSB anaerobism pond, and carry out steady voltage through marsh gas surge tank to the marsh gas of input and handle, pressurize through booster fan marsh gas after the steady voltage, and carry to boiler furnace before through the built-up pipeline, wherein placed the coal in advance in the boiler, and 2 marsh gas combustors of every boiler configuration, wherein marsh gas combustor installs respectively on the brickwork of boiler both sides, automatic spout burning marsh gas in the boiler furnace after the coal-fired operation of boiler, wherein marsh gas house steward is equipped with the gas trip valve to the person in charge before every boiler furnace, and the marsh gas in front of every boiler is responsible for two way branch pipes of shunting, through the combustor on the access both sides brickwork of adjusting control valves.
EXAMPLE five
Referring to fig. 1, a fluidized bed boiler co-combustion biogas system comprises a design module, an acquisition module, an assembly module, a construction module, a pretreatment module, a test module, a real-time detection module, a data observation module, a judgment module, a processing module and a use module, wherein the design module is connected with an acquisition module, the acquisition module is respectively connected with the assembly module, the processing module and the use module, the assembly module is connected with a construction module, the construction module is connected with a pretreatment module, the pretreatment module is connected with a test module, the test module is connected with the real-time detection module, the real-time detection module is connected with the data observation module, the data observation module is connected with the judgment module, the judgment module is connected with the processing module, the design module is used for designing the fluidized bed boiler mixed-combustion biogas system, the acquisition module is used for acquiring devices and biogas contained in the fluidized bed boiler co-combustion biogas system, the assembly module is used for carrying out fixed-point assembly on the acquired devices, the construction module is used for constructing the fluidized bed boiler co-combustion biogas system through a design drawing, the pretreatment module is used for pretreating the fluidized bed boiler co-combustion biogas system, the test module tests the constructed mixed combustion biogas system of the fluidized bed boiler, the real-time detection module is used for detecting the pressure data of the mixed combustion biogas system of the fluidized bed boiler in the test process in real time, the data observation module is used for observing the pressure data displayed by the air tightness detector in the test process, the judgment module is used for judging the observation result, the processing module is used for processing the judgment result, and the using module is used for using the fluidized bed boiler co-combustion biogas system;
referring to fig. 2, the construction method thereof includes the following steps:
s1: constructing a system: designing the fluidized bed boiler co-combustion biogas system by a professional according to requirements, constructing the fluidized bed boiler co-combustion biogas system through a design drawing, wherein the design requirement is that a device contained in the fluidized bed boiler co-combustion biogas system comprises an EGSB (expanded granular sludge bed) anaerobic tank, a biogas pressure stabilizing tank, a booster fan, a biogas burner, a valve, a pipeline and a co-combustion controller when the design is carried out, the booster fan adopts a Roots blower, the valve and the pipeline are made of stainless steel materials, the biogas burner and the boiler adopt a special biogas burner matched with the same model, the biogas burner has the design aiming at the combustion characteristic, the operation parameter and the biogas characteristic of the circulating fluidized bed boiler, the co-combustion controller adopts a West door PLC (programmable logic controller) and PID (proportion integration differentiation) automatic control, the frequency of the Roots blower is adjusted by taking the gas level of a gas storage tank and the pressure of the pipeline as parameters, the gas storage tank and the pipeline pressure as the parameters, the gas storage tank and the special biogas burner are connected to a remote control room of the boiler, meanwhile, the fluidized bed boiler co-combustion biogas system has a safety protection function, wherein the safety protection function comprises power failure protection, flameout protection, the professional personnel obtain the devices when the design is carried out, the design and obtain the devices of the fluidized bed boiler co-combustion device, and the specialized devices when the fluidized bed boiler co-combustion device, the specialized devices are obtained by the specialized boiler assembly of the specialized boiler;
s2: the test was carried out: testing a constructed fluidized bed boiler mixed combustion biogas system by a professional, wherein the fluidized bed boiler mixed combustion biogas system is pretreated by the professional before the testing is carried out, the professional places the fluidized bed boiler mixed combustion biogas system in a sealed environment during the pretreatment, and inflates an EGSB anaerobic tank gas outlet under the condition of completely sealing all contact surfaces, meanwhile, the professional detects pressure data of the fluidized bed boiler mixed combustion biogas system in real time through a gas tightness detector, the professional observes the pressure data through the gas tightness detector, judges whether the connection is in a leakage state or not through observation results, and processes the judgment results, wherein the judgment results show that the connection is not in a leakage state, the fluidized bed boiler mixed combustion biogas system is used, the judgment results show that the connection is in a leakage state, stops the testing, the professional reconnects the connection in a leakage state, and performs the testing on the newly connected fluidized bed boiler mixed combustion biogas system, and processes the mixed combustion biogas system again through the judgment results until the connection is in a biogas state, and the judgment results show that the fluidized bed boiler mixed combustion biogas system is in a leakage state, and the connection is in a heavy combustion biogas system, and the fluidized bed boiler mixed combustion biogas system is used;
s3: the use is as follows: mix the marsh gas system of burning by the professional to the fluidized bed boiler who constructs and use, mix by the professional when wherein carrying out the use and burn the valve of marsh gas system to the EGSB anaerobism pond through the fluidized bed boiler who constructs and carry out long-range open control, control is accomplished the marsh gas of fermentation in the back through the valve output EGSB anaerobism pond, and carry out steady voltage through marsh gas surge tank to the marsh gas of input and handle, pressurize through booster fan marsh gas after the steady voltage, and carry to boiler furnace before through the built-up pipeline, wherein placed the coal in advance in the boiler, and 2 marsh gas combustors of every boiler configuration, wherein marsh gas combustor installs respectively on the brickwork of boiler both sides, automatic spout burning marsh gas in the boiler furnace after the coal-fired operation of boiler, wherein marsh gas house steward is equipped with the gas trip valve to the person in charge before every boiler furnace, and the marsh gas in front of every boiler is responsible for two way branch pipes of shunting, through the combustor on the access both sides brickwork of adjusting control valves.
The fluidized bed boiler co-combustion biogas system in the first embodiment, the second embodiment, the third embodiment, the fourth embodiment and the fifth embodiment is tested, and the following results are obtained:
compared with the existing system, the utilization cost and the environmental pollution rate of the biogas are remarkably reduced, and the first embodiment is the best embodiment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a fluidized bed boiler mixes burns marsh gas system, includes design module, acquires module, equipment module, construction module, preprocessing module, test module, real-time detection module, data observation module, judgment module, processing module and service module, its characterized in that, the design module is connected with acquisition module, acquisition module is connected with assembly module, processing module and service module respectively, the equipment module is connected with construction module, construction module is connected with preprocessing module, preprocessing module is connected with test module, test module is connected with real-time detection module, real-time detection module is connected with data observation module, data observation module and judgment module, judgment module and processing module are connected.
2. The system of claim 1, wherein the design module is configured to design the system, the acquisition module is configured to acquire the device and biogas included in the system, the assembly module is configured to assemble the acquired device at a fixed point, the construction module is configured to construct the system according to a design drawing, the preprocessing module is configured to preprocess the system, the test module is configured to test the system, the real-time detection module is configured to detect pressure data of the system in real time, the data observation module is configured to observe pressure data displayed by the gas tightness detector during the test process, the determination module is configured to determine an observation result, the processing module is configured to process a determination result, and the use module is configured to use the system in real time.
3. The fluidized bed boiler co-combustion biogas system as claimed in claim 1, wherein the construction method comprises the following steps:
s1: constructing a system: designing the fluidized bed boiler co-combustion biogas system by a professional according to requirements, and constructing the fluidized bed boiler co-combustion biogas system through a design drawing;
s2: the test was carried out: testing the constructed mixed combustion biogas system of the fluidized bed boiler by professional personnel;
s3: acquiring biogas: processing the EGSB anaerobic tank by professional personnel to obtain biogas;
s4: the use is as follows: the constructed fluidized bed boiler co-combustion biogas system is used by professionals.
4. The system of claim 3, wherein in step S1, a professional design personnel designs the mixed combustion biogas system of the fluidized bed boiler according to requirements, and constructs the mixed combustion biogas system of the fluidized bed boiler according to design drawings, wherein the design requirements include that a device included in the mixed combustion biogas system of the fluidized bed boiler comprises an EGSB anaerobic tank, a biogas pressure stabilizing tank, a booster fan, a biogas burner, a valve, a pipeline and a mixed combustion controller, the booster fan adopts a Roots blower, the valve and the pipeline are made of stainless steel materials, the biogas burner and the boiler adopt a special biogas burner of the same model, the biogas burner has design aiming at combustion characteristics, operation parameters and biogas characteristics of the circulating fluidized bed boiler, the mixed combustion controller adopts a Siemens PLC (programmable logic controller) and a PID (proportion integration differentiation) and adjusts the frequency of the Roots blower by taking a gas mixing position and pipeline pressure as parameters and is connected to a remote control system of a boiler control room, and the fluidized bed boiler mixed combustion biogas system has a safety protection function, wherein the safety protection function includes a power failure protection device, a chain flameout protection device, a fixed-point protection device, a special low-pressure-point protection device and a special-point protection device for obtaining the design drawing after the boiler combustion by the professional combustion protection device, and obtaining the design drawing of the fluidized bed boiler.
5. The system of claim 3, wherein in step S2, a professional is used to test the constructed mixed-combustion biogas system of the fluidized bed boiler, wherein the professional preprocesses the mixed-combustion biogas system of the fluidized bed boiler before the test, the professional places the mixed-combustion biogas system of the fluidized bed boiler in a sealed environment during the preprocessing, inflates an EGSB anaerobic tank gas outlet under the condition that all contact surfaces are completely sealed, and simultaneously, the professional detects pressure data of the mixed-combustion biogas system of the fluidized bed boiler through an air tightness detector in real time, wherein the air tightness detector is arranged at a joint of adjacent devices during the real-time detection, the professional observes the pressure data through the air tightness detector, judges whether the leakage occurs at the joint according to observation results, and processes the judgment results, wherein the judgment results show that no leakage occurs at the joint, the fluidized bed boiler mixed-combustion biogas system is not processed, the test is stopped when the judgment results show that leakage occurs at the joint, the boiler mixed-combustion biogas system is reused, and the test is carried out until the test is carried out.
6. The blending combustion biogas system of a fluidized bed boiler according to claim 3, wherein in S3, a professional carries out treatment on the EGSB anaerobic tank to obtain biogas, wherein the professional carries out remote closing control on a valve of the EGSB anaerobic tank through the constructed blending combustion biogas system of the fluidized bed boiler when carrying out treatment, the professional adds anaerobic bacteria with a specific proportion into the EGSB anaerobic tank after the control is completed, a stirring rod switch inside the EGSB anaerobic tank is opened by the professional to carry out stirring treatment after the adding is completed, wherein the stirring speed of the stirring rod is 20r/min when carrying out stirring treatment, the stirring time is 2min, the EGSB anaerobic tank is subjected to standing fermentation treatment after the stirring treatment, wherein the biogas is obtained by decomposing and metabolizing the wastewater in the EGSB anaerobic tank by the anaerobic bacteria when carrying out standing fermentation treatment, and the standing time is 72h when carrying out standing fermentation treatment.
7. The blending combustion biogas system of a fluidized bed boiler as claimed in claim 6, wherein the specific ratio is the anaerobic bacteria addition volume: the total volume of the wastewater contained in the EGSB anaerobic tank is 3:97 and the anaerobes are formed by mixing 60% of moderate anaerobes, 30% of aerotolerant anaerobes and 10% of anaerobes sensitive to oxygen extremes.
8. The system of claim 3, wherein in step S4, the constructed mixed-combustion biogas system of the fluidized bed boiler is used by a professional, wherein the professional remotely opens and controls a valve of the EGSB anaerobic tank through the constructed mixed-combustion biogas system of the fluidized bed boiler when in use, the biogas fermented in the EGSB anaerobic tank is output through the valve after the control is completed, the input biogas is subjected to pressure stabilization treatment through a biogas pressure stabilizing tank, the stabilized biogas is pressurized through a booster fan and is conveyed to the front of the boiler through an overhead pipeline, wherein coal is placed in the boiler in advance, and each boiler is provided with 2 biogas burners, wherein the biogas burners are respectively installed on furnace walls at two sides of the boiler, the biogas is automatically sprayed into the boiler furnace after the boiler operates, wherein a main pipe from a main pipe to the front of the boiler is provided with a gas shut-off valve, and a main pipe of each boiler is connected with two branch pipes of each fuel gas, and is connected to the burners on the furnace walls at two sides through a regulating and controlling valve set.
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