CN205045965U - Mud system gas power generation system - Google Patents
Mud system gas power generation system Download PDFInfo
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- CN205045965U CN205045965U CN201520794911.6U CN201520794911U CN205045965U CN 205045965 U CN205045965 U CN 205045965U CN 201520794911 U CN201520794911 U CN 201520794911U CN 205045965 U CN205045965 U CN 205045965U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model provides a mud system gas power generation system, it includes drying device, breaker, make -up machine, gas producer, purifier and gas turbine generator, drying device, breaker and make -up machine connect gradually and are used for successively carrying out drying, breakage and shaping to mud, gas producer connects and to be used for producing coal gas in make -up machine low reaches, and its furnace roof or furnace body upper portion are provided with the pan feeding mouth that is used for inputing shaping mud, and stove bottom or furnace body lower part are provided with the air inlet that is used for inputing the gasification agent, purifier and gas turbine generator connect and are arranged in purifying coal gas that gas producer produced respectively and utilize the coal gas after purifying to generate electricity for the raw materials in gas producer low reaches, it can realize innoxious, stabilization, minimizing and resourceful treatment's final goal to municipal waste water treatment plant's mud to can gain better economic benefits, it extensively is applicable to the processing of various municipal sludges and rubbish.
Description
Technical field
The utility model relates to a kind of mud gas power generation system.
Background technology
In order to the water resources protecting us limited, create excellent living environment, sanitary sewage and trade effluent have to pass through the process of sewage work, could discharge after reaching state sewage emission standard, whether have urban sewage treatment system, this has become the mark of a modern city civilization, is also the requisite environmental engineering measure of Urban Ecology Environment Construction; Urban sewage treatment system comprises sewage disposal and sludge treatment two portions, in recent years, by Importing Foreign Advanced Technology and technological transformation, the water technology level of China is greatly improved, various types of sewage can be effectively controlled, but, can use for reference owing to there is no a kind of effective sludge disposal technology in the world, China, to the sludge disposal technology produced in sewage treatment process, lags behind the development of urban sewage treatment technology out and away; Pollutent most in sewage, in the process making sewage be purified, is transferred in mud by various water technology, and it is large that this mud that municipal sewage plant is produced has quantity, and the feature of the hazardous contaminant of enrichment high density.
At present, China mainly takes the method for disposal of interim heap buried to sludge from wastewater treatment plant, not only spend a large amount of funds and take a large amount of land resources, and cause serious secondary pollution to ecotope, ooze under sewage particularly in mud, the harm brought to groundwater resource is unable to estimate especially, and in fact peri-urban can not have the space and place that are applicable to stacking this kind of mud, the harm of the secondary environmental pollution that the interim heap buried of mud produces, in fact counteracts the environmental benefit of sewage disposal; The environmental problem caused in the face of mud increasingly sharp-pointed and mud endanger the reality of increasingly sharpening, and people attempt utilizing mud as fertilizer, and for agricultural or afforest, but each heavy metal species contained by mud limits the adaptability that soil utilizes mud; Research shows, the heavy metal of 1mg/L is removed from waste water, the heavy metal of 10000mg/L will be accumulated in mud, their meeting enrichments in soil, and enter food chain by the absorption of crop, finally jeopardize the health of human body, even if some mud is from city domestic sewage, although heavy metal content is lower, pathogenic agent contained in mud and persistence organic pollutant, and the various medicaments added in sewage treatment process, all can bring potential harm to environment.
With reference to the practice of external sludge incineration, some places are attempted by burning the object reaching mud decrement, but sludge incinerator investment cost is high, energy-output ratio is large, and working cost is expensive, the expense of sludge incineration is more than 400 yuan/ton, adding that mud is when burning, the residue after polluting and burning can be brought still to need the reasons such as disposal, according to the national conditions of China to atmospheric environment, sludge incineration process is difficult to bear economically, goes back imperfection technically.
The chemical constitution of municipal sludge is kept stable, and wherein the content of nitrogen and phosphorus is higher, containing higher organic substance in mud; In mud, organic content is high, and its calorific value is also high, and show by measuring, the organic substance of sludge from wastewater treatment plant accounts for 70% ~ 80%, and its calorific value is about the calorific value that 14MJ/kg is equivalent to brown coal; If the heat energy in mud can be developed, municipal sludge treatment plant can not only be made to obtain thoroughly processing safely, and the heat energy that mud can be made to have become valuable resource.
Summary of the invention
For above-mentioned situation, the utility model object is to provide a kind of mud gas power generation system, the using waste heat from tail gas that it utilizes jet dynamic control to discharge is to sludge drying process, again by dried sludge crushing, extrusion molding, enter producer gas generator and vaporized chemical to react and produce coal gas, gas electricity generator generating is conveyed into by the coal gas after recovery of heat, washing, storage, purification, thus the mud of municipal sewage plant is realized to the ultimate aim of innoxious, stabilization, minimizing and recycling treatment, and good economic benefit can be obtained.
For realizing above-mentioned task, a kind of mud gas power generation system, it comprises drying installation, crusher, forming machine, producer gas generator, refining plant and gas electricity generator; Described drying installation, crusher and forming machine are connected for successively carrying out drying, fragmentation and shaping to mud successively; Described producer gas generator is connected to forming machine downstream for generation of coal gas, and its furnace roof or upper of furnace body are provided with the feeding mouth for molding mud, and furnace bottom or lower portion of furnace body are provided with the inlet mouth for inputting vaporized chemical; Described refining plant and gas electricity generator are connected to producer gas generator downstream and are respectively used to purify in producer gas generator the coal gas that produces and the coal gas after utilizing purification for raw material and generate electricity.
For realizing the utility model effect optimization, its further step: be provided with the heat sink for lowering the temperature to coal gas between described producer gas generator and refining plant.
Be connected with the pipeline for carrying high-temperature tail gas between described gas electricity generator and drying installation, described high-temperature tail gas contacts with mud and carries out drying to mud.
Described gas electricity generator is provided with exhaust scrubber and thionizer successively to the downstream, exhaust pipe road of drying installation, and described exhaust scrubber and thionizer are respectively used to carry out cleaning dedusting and desulfurization removing nitric to tail gas.
The utility model provides a kind of mud gas power generation system, and it comprises drying installation, crusher, forming machine, producer gas generator, refining plant and gas electricity generator; Described drying installation, crusher and forming machine are connected for successively carrying out drying, fragmentation and shaping to mud successively; Described producer gas generator is connected to forming machine downstream for generation of coal gas, and its furnace roof or upper of furnace body are provided with the feeding mouth for molding mud, and furnace bottom or lower portion of furnace body are provided with the inlet mouth for inputting vaporized chemical; Described refining plant and gas electricity generator are connected to producer gas generator downstream and are respectively used to purify the coal gas produced in producer gas generator and the technical scheme utilizing the coal gas after purifying to generate electricity for raw material; The using waste heat from tail gas that it utilizes jet dynamic control to discharge is to sludge drying process, again by dried sludge crushing, extruding, shaping, enter producer gas generator and oxygen-rich air to react and produce coal gas, coal gas is by generating electricity through jet dynamic control after recovery of heat, washing, storage, purification, thus the mud of municipal sewage plant is realized to the ultimate aim of innoxious, stabilization, minimizing and recycling treatment, and good economic benefit can be obtained.
The beneficial effect that the utility model is produced compared to existing technology:
I, the utility model adopts the thermal energy of gas-fired to be electric energy, and lowers the temperature to the tail gas after burning, wash and desulfurization removing nitric process, ensures qualified discharge, meets the policy requirements of developing a circular economy;
II, the utility model adopts jet dynamic control using waste heat from tail gas dewatered sludge, reduce the water ratio of mud, creating condition for realizing sludge power generation, opening the effective way of a cyclic utilization of waste, significant society and environmental benefit can be produced, obvious economic benefit can be obtained again;
III, the utility model adopts and carries out carbon dioxide removal and hydrogen sulfide to before gas to generate electricity, adds unit volume caloric power of gas, improves fuel gas temperature, thus improve the efficiency of gas electricity generator, meet the requirement of gas electricity generator to fuel;
IV, the utility model adopts the square particle length of side to be 25mm ~ 40mm, or cylindrical particle diameter be 25mm ~ 40mm and high be 25mm ~ 40mm, or spheroidal particle equivalent diameter is the shaped fuel of 55mm ~ 80mm, the output increased 30% of per kilogram fuel production coal gas can be made;
V, the utility model adopts Ca in the soft water producing superheated vapour
2+and Mg
2+equivalent sum≤the 100mg/L of ion, effectively can prevent producer gas generator from producing bird nest, improve the work-ing life of equipment and the production efficiency of coal gas;
VI, the utility model utilize jet dynamic control to discharge using waste heat from tail gas to sludge drying process, again by dried sludge crushing, extruding, shaping, enter producer gas generator and vaporized chemical to react and produce coal gas, coal gas is by generating electricity through jet dynamic control after recovery of heat, washing, storage, purification, thus the mud of municipal sewage plant is realized to the ultimate aim of innoxious, stabilization, minimizing and recycling treatment, and good society, benefits of environment and economy can be obtained.
The utility model is widely used in the process of various municipal sludge and rubbish.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing forming the application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.
Fig. 1 is workflow diagram of the present utility model.
Fig. 2 is syndeton schematic diagram of the present utility model.
Fig. 3 is the syndeton schematic diagram of exhaust scrubber and thionizer in the utility model.
In figure: 1-drying installation, 2-crusher, 3-forming machine, 4-producer gas generator, 5-heat sink, 6-refining plant, 7-gas electricity generator, 8-exhaust scrubber, 9-thionizer.
Embodiment
As shown in Figure 1, workflow of the present utility model comprises the following steps:
1) dry: to utilize gas electricity generator using waste heat from tail gas to remove moisture further to dewatered sludge in drying installation 1, obtain the sludge-drying of water ratio 10 ~ 35%, wherein organic matter comprises protein, humic acids and carbohydrate equal size and is greater than 50%, Lower heat value >=8500KJ/Kg, its Lower heat value method of masurement operative norm GB/T12206;
2) broken: dried mud to be carried out rolling through crusher 2, broken processing;
3) shaping: the sludge-drying of fragmentation to be utilized forming machine 3 extrusion molding, obtaining the square particle length of side is 5mm ~ 50mm, or cylindrical particle diameter be 5mm ~ 50mm and high be 5mm ~ 50mm, or spheroidal particle equivalent diameter is 5mm ~ 100mm; Described shaping mud preferred size is square particle length of side 25mm ~ 40mm, or cylindrical particle diameter is 25mm ~ 40mm and high 25mm ~ 40mm, or spheroidal particle equivalent diameter is 55mm ~ 80mm, every kilogram of shaping mud can be made to produce the output increased 30% of coal gas;
4) detect: chemical composition and physical property are carried out to shaping mud and detects, the parameter of described detection comprise in ash content, volatile matter, fixed carbon, sulphur, water ratio, calorific value and lime-ash softening temperature one or more; Preferably its chemical composition content meets ash content 20 ~ 40%, volatile matter 40 ~ 70%, fixed carbon 5 ~ 15%, sulphur 0.2 ~ 0.8% and water ratio 10 ~ 35%; Its physical property meets calorific value >=8.5MJ/Kg and lime-ash softening temperature 1200 ~ 1600 DEG C; Described lime-ash is silicate by the elementary composition compound such as silicon, aluminium, iron, calcium and oxygen, its principal mode, silico-aluminate, silicon, aluminium, iron, calcium oxide, vitriol etc.; Silicate, silico-aluminate, vitriol etc. have higher softening temperature, and the inner top temperature of shaping mud will lower than softening temperature, otherwise lime-ash difficulty is broken, and lime-ash wraps up shaping mud and causes utilization ratio low, and affect vaporized chemical passage, reduce gas making efficiency;
5) gas processed: the qualified shaping mud of detection is transported to producer gas generator 4 top, enters fuel bed through hopper from top to bottom; And vaporized chemical oxygen-rich air and superheated vapour are through the grate even fuel bed by producer gas generator 4 meeting with shaping mud from bottom to top, now shaping mud and vaporized chemical react generation coal gas; In the gas-making process of described coal gas, the temperature of fuel layer of producer gas generator 4 is 600 ~ 1200 DEG C; The pressure of vaporized chemical oxygen-rich air and superheated vapour is 1000 ~ 20000Pa, and flow velocity is 0.5 ~ 2.0m/s; Fuel layer height is 1.0 ~ 5.8m; Softened water hardness≤the 100mg/L of described production superheated vapour, i.e. Ca in soft water
2+and Mg
2+equivalent sum≤the 100mg/L of ion, effectively can prevent producer gas generator 4 from producing bird nest, improve the work-ing life of equipment and the production efficiency of coal gas;
6) lower the temperature: coal gas, through vapor superheater generation heat exchange, make steam superheating actuator temperature rise to 200 ~ 250 DEG C, and water-gas temperature drops to 250 ~ 300 DEG C; Coal gas comprises scrubber tower washing cooling dedusting, tar removing and the removal of impurity through heat sink 5 again, and temperature drops to 20 ~ 50 DEG C further, and the coal gas arrangement after described cooling enters gas holder storage;
7) purify: the coal gas in storage gas holder is delivered in the process of gas electricity generator the partial CO 2 removed through refining plant 6 in coal gas; Wet desulfurizing process such as employing MSQ, tannin process etc. removes the hydrogen sulfide in coal gas, makes the hydrogen sulfide content in coal gas be less than 20mg/m
3, add unit volume caloric power of gas, improve fuel gas temperature, thus improve the efficiency of gas electricity generator 7, meet the requirement of gas electricity generator 7 pairs of coal gas;
8) generate electricity: the coal gas after purification is delivered into gas electricity generator 7 and to burn generation heat energy, drive gas electricity generator 7 to generate electricity; Gas electricity generator 7 is mechanical energy by the thermal energy of gas-fired, then be the equipment of electric energy by mechanical energy; It is made up of air feed, lubrication, cooling, igniting, startup and speed governing six Iarge-scale system; Institute's Import Gas temperature≤40 DEG C in described generating set incinerator, combustibleconstituents content>=50%, the rate of change of combustibleconstituents content≤2%/min, H
2s≤20mg/Nm
3, impurity granularity≤5 μm, foreign matter content≤30mg/Nm
3, water-content≤40g/Nm
3; Described combustibleconstituents comprises hydrogen, carbon monoxide, methane (nitrogen, indifferent gas, carbonic acid gas are non-combustible components), described impurity mainly refers to incombustible ash content, the content of combustibleconstituents is high, and calorific value is just high, and the efficiency of gas electricity generator 7 is just high; Impurity is few, little to the wearing and tearing of gas electricity generator 7 cylinder, can extend the work-ing life of gas electricity generator 7, reduces maintenance cost;
9) heat exchange: the high-temperature tail gas (combustibleconstituents content≤1%, temperature≤600 DEG C) ejected by jet dynamic control is by sludge drying mechanism 1, mud fully contacts with tail gas in drying installation 1, there is heat exchange, mud obtains mummification further, and exhaust temperature is also reduced to less than 150 DEG C simultaneously;
10) wash: adopt clear water fully to contact in exhaust scrubber 8 with tail gas, the trace solid in washing tail gas, exhaust temperature is reduced to less than 50 DEG C further;
11) desulfurization: doctor solution fully contacts in thionizer 9 with tail gas, SO in tail gas
2generate stable compound with doctor solution reaction, desulfurization regeneration Posterior circle uses; Desulfurization adopts sodalime double alkali method, and doctor solution can also partial removal NO
x, dust concentration can be reduced further simultaneously.
12) discharge: the characteristic of final externally emission is exhaust temperature≤50 DEG C, smoke content≤5mg/m
3, SO
2content≤10mg/Nm
3, NO
xcontent≤50mg/Nm
3; Odor concentration reaches GB14554-1993 primary standard value: ammonia content≤1.0mg/Nm
3, hydrogen sulfide content <0.03mg/Nm
3, trimethylamine content <0.05mg/Nm
3, methanthiol <0.004mg/Nm
3, dimethyl sulfide content <0.03mg/Nm
3, methyl disulfide content <0.03mg/Nm
3, dithiocarbonic anhydride content <2.0mg/Nm
3, styrene content <3.0mg/Nm
3, Dioxins is at 0.01ng/Nm
3below.
As shown in Figure 2, mud gas electric generating apparatus of the present utility model comprises drying installation 1, crusher 2, forming machine 3, producer gas generator 4, refining plant 6 and gas electricity generator 7; Described drying installation 1, crusher 2 and forming machine 3 are connected successively and are used for successively carrying out drying, fragmentation and shaping to mud; Described producer gas generator 4 is connected to forming machine 3 downstream for generation of coal gas, and its furnace roof or upper of furnace body are provided with the feeding mouth for molding mud, and furnace bottom or lower portion of furnace body are provided with the inlet mouth for inputting vaporized chemical; Described refining plant 6 and gas electricity generator 7 are connected to producer gas generator 4 downstream and are respectively used to purify the coal gas that produces in producer gas generator 4 and utilize purification coal gas to generate electricity for raw material; The heat sink 5 for lowering the temperature to coal gas is provided with between producer gas generator 4 and refining plant 6.
As shown in Figure 3, mud gas electric generating apparatus of the present utility model also comprises the pipeline being communicated with described gas electricity generator 7 and described drying installation 1, described pipeline is for transporting the high-temperature tail gas in gas electricity generator 7, and described high-temperature tail gas contacts with mud and carries out drying to mud; Described exhaust scrubber 8 and thionizer 9 are connected to the downstream in the exhaust pipe road from gas electricity generator 7 to drying installation 1 in turn, clear water and tail gas complete the washing process to tail gas in exhaust scrubber 8, tail gas after washing and doctor solution complete FGD-Flue gas desulphurization process in described thionizer 9, and described thionizer 9 is provided with exhaust port.
Embodiment of the present utility model sees the following form, and affects large by the size of known shaping mud in table on the production efficiency of coal gas.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations; All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a mud gas power generation system, is characterized in that comprising drying installation (1), crusher (2), forming machine (3), producer gas generator (4), refining plant (6) and gas electricity generator (7); Described drying installation (1), crusher (2) and forming machine (3) are connected successively and are used for successively carrying out drying, fragmentation and shaping to mud; Described producer gas generator (4) is connected to forming machine (3) downstream for generation of coal gas, and its furnace roof or upper of furnace body are provided with the feeding mouth for molding mud, and furnace bottom or lower portion of furnace body are provided with the inlet mouth for inputting vaporized chemical; Described refining plant (6) and gas electricity generator (7) are connected to producer gas generator (4) downstream and are respectively used to purify the coal gas that produces in producer gas generator (4) and the coal gas after utilizing purification for raw material and generate electricity.
2. a kind of mud gas power generation system according to claim 1, is characterized in that the heat sink (5) be provided with between described producer gas generator (4) and refining plant (6) for lowering the temperature to coal gas.
3. a kind of mud gas power generation system according to claim 1, it is characterized in that the pipeline be connected with between described gas electricity generator (7) and drying installation (1) for carrying high-temperature tail gas, described high-temperature tail gas contacts with mud and carries out drying to mud.
4. a kind of mud gas power generation system according to claim 1, it is characterized in that described gas electricity generator (7) is provided with exhaust scrubber (8) and thionizer (9) successively to the downstream, exhaust pipe road of drying installation (1), described exhaust scrubber (8) and thionizer (9) are respectively used to carry out cleaning dedusting and desulfurization removing nitric to tail gas.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520794911.6U CN205045965U (en) | 2015-10-14 | 2015-10-14 | Mud system gas power generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520794911.6U CN205045965U (en) | 2015-10-14 | 2015-10-14 | Mud system gas power generation system |
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| CN205045965U true CN205045965U (en) | 2016-02-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108587691A (en) * | 2018-03-29 | 2018-09-28 | 东南大学 | A kind of system and method for municipal sludge pressurized gasification gas turbine power generation |
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2015
- 2015-10-14 CN CN201520794911.6U patent/CN205045965U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108587691A (en) * | 2018-03-29 | 2018-09-28 | 东南大学 | A kind of system and method for municipal sludge pressurized gasification gas turbine power generation |
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