CN103539333B - System and method for drying sludge through waste heat of gas turbine - Google Patents
System and method for drying sludge through waste heat of gas turbine Download PDFInfo
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- CN103539333B CN103539333B CN201310518977.8A CN201310518977A CN103539333B CN 103539333 B CN103539333 B CN 103539333B CN 201310518977 A CN201310518977 A CN 201310518977A CN 103539333 B CN103539333 B CN 103539333B
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Abstract
The invention provides a system and a method for drying sludge through the waste heat of a gas turbine. The gas turbine is connected with a generator; a flue gas outlet of the gas turbine is communicated with a waste heat boiler; a steam outlet of the waste heat boiler is communicated with a steam turbine; the steam turbine is connected with the generator; a steam extraction pipe of the steam turbine is communicated with an inlet of a heated surface pipe of an internal thermal type fluidized bed dryer; an air outlet of an air heater is communicated with an air inlet of the internal thermal type fluidized bed dryer; wet sludge enters the internal thermal type fluidized bed dryer through a wet sludge pipe, flows outside the heated surface pipe, is dried and then is discharged into a dry sludge pipe from a discharging hole. Steam is produced through the flue gas waste heat of the gas turbine to push a steam turbine generator set to generate power, and the waste heat of the steam turbine is taken as a heat source for drying the sludge, so that gradient energy utilization is realized, the heat efficiency is high, and a peculiar smell is not discharged; the fluidization air of the fluidized bed dryer is preheated by hot water, so that the energy utilization rate is further improved, and the environmental problems of groundwater pollution and the like caused by sludge burying and soil utilization are effectively solved.
Description
Technical field
The present invention relates to waste heat recovery and drying sludge field, particularly a kind of system and method utilizing internal combustion turbine waste heat sludge-drying.
Background technology
(1) output of sewage sludge and harm thereof
Along with the quick propelling of Development of China's Urbanization, the sewage disposal industry of China is developed rapidly, and sewage treatment capacity and processing rate rapid development, the output of sewage sludge increases sharply.By the end of the end of the year 2009, the urban wastewater treatment firm 1992 that China puts into operation, the amount of disposing of sewage 28,000,000,000 m
3, produce about 2,005 ten thousand tons, the mud of water ratio 80%.Along with the increase of the level of urbanization and sewage load, sludge quantity will break through 3,000 ten thousand tons very soon.The composition of mud and chemical property complexity, both comprised organism, plant nutrient ingredient etc., also comprised the objectionable impuritiess such as heavy metal.The Hygienic Index of mud mainly comprises total plate count, excrement colibacillus group number, parasitic ovum content etc.Mud contains the hazardous and noxious substances such as pathogenic agent, heavy metal and persistent organism, without effectively processing disposal, very easily causes secondary pollution to underground water, soil etc.
Through the development of decades, the specific resistance to filtration technology of the developed regions such as American-European, Japanese and country has been mature on the whole, and relevant laws and regulations and technological standard are substantially perfect.Main technological route comprises: burning disposal, sanitary landfill, Land_use change etc., can realize the object of the minimizing of mud, innoxious, stabilization.
According to incompletely statistics, current national urban wastewater treatment firm mud only has small portion to carry out sanitary landfill, Land_use change, burning and building materials utilization etc., and major part does not carry out normalized process disposal, directly threaten environmental safety and the public health of China, the environmental benefit of sewage treatment facility is reduced greatly.
(2) basic demand of sludge treatment
Sludge treatment should meet safety and environmental protection, recycle, the principle such as energy-saving and cost-reducing.In the treating processes of mud, mud contains the hazardous and noxious substances such as pathogenic agent, heavy metal and persistent organism must reach Environmental capacity standard; Make full use of organic matter, various nutritive element and energy contained in mud, the organic matter in mud and nutritive element are added in soil, or reclaim the energy in mud by the technology such as anaerobic digestion or burning; Should avoid adopting the process disposal technology consuming a large amount of high-quality clean energy, material and land resources, dispose to realize the process of mud low-carbon (LC).
Country encourage to utilize produce in anaerobic sludge digestion process biogas heat energy, rubbish and sludge incineration waste heat, waste heat of power plant or other waste heats be as the thermal source of specific resistance to filtration.
(3) sludge disposal technology
Sludge disposal comprises the modes such as Land_use change, burning, landfill.
The Land_use change of mud comprises for land reclamation, for afforestation, for agricultural etc.But the shale of Land_use change to mud of mud has very strict requirement, otherwise secondary pollution may be produced to underground water and surrounding environment.
The landfill disposal of mud not only needs to take a large amount of soils, and landfill yard also discharges a large amount of foul gas, methane isothermal chamber gas, if mishandling, also can cause groundwater pollution.
The most frequently used scheme of sludge incineration treatment technology is: first carry out drying to the wet mud that water ratio is about 80%, dried mud enters incinerator and completes burning disposal.The burning disposal of mud can farthest realize minimizing and stabilization, and almost kill the germ of in mud 100%, innoxious degree is high, but also can carry out thermal utilization to the combustiblematerials in mud, realizes the resource utilization of sludge heat energy.But need in the drying process of sludge incineration process to consume coal-fired grade for high-grade energy, cost is higher; In addition, wet drying sludge process need consumption fire coal provides the energy, the atmospheric polluting materials such as fired coal combustion discharge sulfurous gas, oxynitride, dust.
(4) UTILIZATION OF VESIDUAL HEAT IN of internal combustion turbine
Utilize internal combustion turbine to carry out Combined cycle gas-steam turbine, the generating efficiency of combustion gas can be made to bring up to about 45% to 55%, if adopt extraction condensing type steam turbine, the energy utilization rate of combustion gas can up to more than 70%.Although Combined cycle gas-steam turbine is in conjunction with sucking condensing turbine, the utilization ratio of the energy can up to more than 70%, but with the supporting waste heat boiler funnel temperature of internal combustion turbine generally up to more than 120 DEG C, the residual heat resources of low temperature like this are difficult to utilize, generally can only be discharged in air, not only cause energy dissipation, also produce environmental thermal pollution problem.
Summary of the invention
The object of the invention is to overcome prior art defect, provide a kind of energy utilization rate high, outer row has that gas with foreign flavor, funnel temperature are low, the system and method utilizing internal combustion turbine waste heat sludge-drying of safety and environmental protection.
For achieving the above object, the technical solution used in the present invention is:
A kind of system utilizing internal combustion turbine waste heat sludge-drying, comprise internal combustion turbine, internal combustion turbine is connected with generator, gas turbine flue gas outlet waste heat boiler is connected, vapour generator and water-heater is provided with in waste heat boiler, waste heat boiler vapour outlet is connected with steam turbine, steam turbine is connected with generator, the extraction steam pipe of steam turbine is connected with the heating surface tube entrance of internal heat type fluidized bed dryer, turbine discharge mouth is connected with condenser, condenser is connected with deoxygenator, the heating surface tube outlet of internal heat type fluidized bed dryer is connected with deoxygenator, deoxygenator is connected with vapour generator water-in through service pump, the water heater hot-water outlet of described waste heat boiler is connected with airheater, and airheater cooling water outlet is connected with the water-in of water-heater by recycle pump, airheater air outlet is connected with internal heat type fluidized bed dryer blast inlet by heating duct, internal heat type fluidized bed dryer air outlet is connected with fly-ash separator in turn, induced draft fan and moisture condensation device, the pneumatic outlet of moisture condensation device is communicated with airheater inlet mouth by gas blower, blower export is also connected with waste discharge tracheae, internal heat type fluidized bed dryer opening for feed connects wet sludge pipe, discharge port connects dewatered sludge pipe, wet mud enters into internal heat type fluidized bed dryer through wet sludge pipe, flow outward at heating surface tube, dewatered sludge pipe is entered from discharge port after drying.
Described moisture condensation device is spray column, and induced draft fan is connected with the inlet mouth of spray column, and the air outlet of spray column is connected with gas blower; Be disposed with mist eliminator, spray header and water collecting basin from top to bottom in spray column, be provided with interchanger in water collecting basin, water collecting basin is connected with spray header by recycle pump, and water collecting basin is also provided with water shoot.
Described moisture condensation device pneumatic outlet is connected with mixing wind tube, and mixing wind tube is communicated with gas blower, and airheater air outlet is divided into two-way, and a road is connected with internal heat type fluidized bed dryer blast inlet, and another road is communicated with mixing wind tube.
Described waste discharge tracheae outlet is connected with gas sweetening or odor removal.
Utilize a method for internal combustion turbine waste heat sludge-drying, it is characterized in that comprising the following steps:
(1), combustion gas and air enter gas turbine combustion, the flue gas propelling gas turbine engine high speed rotating of High Temperature High Pressure drive electrical generators generating, the flue gas of discharge of gas turbine enters waste heat boiler, and flue gas is to the vapour generator heat release of waste heat boiler, and vapour generator produces steam; Flue gas after cooling is discharged further after the water-heater heat release of waste heat boiler;
(2), vapour generator produce steam enter steam turbine and pushing turbine drive electrical generators generating, from steam turbine extract out some vapor enter internal heat type fluidized bed dryer; The exhaust steam of turbine exhaust enters after condenser condenses into water and enters deoxygenator; Enter drawing gas of internal heat type fluidized bed dryer and condense into water after the heat release of moisture eliminator heating surface Bottomhole pressure, condensed water enters into deoxygenator; The wet mud entering into internal heat type fluidized bed dryer from wet sludge pipe is full of the gap between heating surface tube; The hot blast that airheater produces enters into upper flowing in internal heat type fluidized bed dryer, and drive the mud between different heating surface tube to carry out flowing and being in fluidization, after mud heat absorption, water vapor evaporation enters in the middle of fluidized wind; Sludge-drying is discharged from dewatered sludge pipe; Fluidized wind carries water vapor and partial sludge particle leaves internal heat type fluidized bed dryer, enters in fly-ash separator;
(3) deaerated water, in deoxygenator is transformed into steam after entering after service pump and absorbing heat in vapour generator and enters into steam turbine again; Moisture condensation device is entered through induced draft fan after the fluidized wind carrying mud granule carries out dedusting in fly-ash separator, water vapor in fluidized wind cools and condenses into water, the fluidized wind of removing steam enters into airheater as recirculating air through gas blower, carries out heat exchange with the hot water from water-heater, recirculating air temperature is left airheater after raising and is again entered in internal heat type fluidized bed dryer as fluidized wind, and unnecessary recirculating air is discharged through waste discharge tracheae; Hot water in airheater becomes cold water after recirculating air heat release, and cold water leaves airheater, enter water-heater endothermic transition from flue gas through recycle pump becomes hot water to enter into circulating pipe again.
Described moisture condensation device is spray column, water collecting basin inner cold water is transported to spray header and is atomized into water droplet by recycle pump, the recirculating air entered in spray column upwards flows, be atomized after water droplet flow downward, the two countercurrent flow heat exchange, the water vapor in recirculating air cools and condenses into water and enters into water collecting basin; Recirculating air containing water droplet upwards flows further and through mist eliminator, the water droplet in recirculating air is captured down, enters into water collecting basin, and the recirculating air after demist leaves spray column; Arrange interchanger in water collecting basin, continuously taken away by the heat in water collecting basin, the condensed water that spray column produces is discharged through water shoot.
Described moisture condensation device pneumatic outlet is connected with mixing wind tube; mixing wind tube is communicated with gas blower; airheater air outlet is divided into two-way; one tunnel is connected with internal heat type fluidized bed dryer blast inlet; another road is communicated with mixing wind tube, mix with recirculating air from airheater extension hot blast to mixing wind tube, the recirculating air temperature guaranteed in mixing wind tube maintain mixing wind in water vapor temperature of saturation more than.
The flue-gas temperature of described discharge of gas turbine is 450 DEG C to 600 DEG C, and flue gas enters waste heat boiler and is reduced to less than 200 DEG C to temperature after vapour generator heat release, and vapour generator produces the medium temperature and medium pressure steam that pressure is greater than 2.5MPa, temperature is greater than 400 DEG C; Flue-gas temperature is reduced to less than 100 DEG C further, finally discharges through smoke exhaust pipe.
The present invention compared with prior art, has the following advantages:
(1) fume afterheat of internal combustion turbine is utilized to produce the generating of Steam Actuation turbine driven set, the thermal source of waste heat as mud internal heat type fluidized bed dryer that draw gas of steam turbine, realize energy cascade utilization, thermo-efficiency is high, the fuel cost of drying sludge can be saved, it also avoid the emission problem of the atmospheric polluting materials such as the sulfurous gas of burning coal sludge-drying generation, oxynitride and dust.
(2) utilize fluidized bed dryer and sealing and circulating fluidized wind system, the drying treatment amount of mud be large, failure rate is low, can realize continuous and steady operation, not outer row has the gas of peculiar smell in a large number.
(3) low-temperature flue gas (less than the 120 DEG C) waste heat making full use of discharge of gas turbine produces hot water, and utilize hot water to preheat the fluidized wind of fluidized bed dryer, energy utilization rate improves further.
(4) after dry, the water ratio of mud is lower than 10%, and innoxious, minimizing, the stabilization treatment of mud are guaranteed, and the storage of dewatered sludge, convenient transportation, the range of application of dewatered sludge increases considerably.The environmental problems such as the occupation of land problem effectively avoiding Sludge landfill and Land_use change to cause and groundwater pollution.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
In figure: 1-internal combustion turbine, 2-flue, 3-vapour generator, 4-waste heat boiler, 5-water-heater, 6-smoke exhaust pipe, 7-recycle pump, 8-airheater, 9-gas blower, 10-mixing wind tube, 12-water shoot, 13-water collecting basin, 14-interchanger, 15-spray column, 16-recirculating air arm, 17-dewatered sludge pipe, 18-circulating pipe, 19-heating duct, 20-drain pipe, 21-condensate pipe, 22-deoxygenator, 23-service pump, 24-spray header, 25-mist eliminator, 26-exhaust duct, 27-induced draft fan, 28-fly-ash separator, 29-circulation airduct, 30-wets sludge pipe, 31-heating surface tube, 32-internal heat type fluidized bed dryer, 33-extraction steam pipe, 34-condenser, 35-generator, 36-steam turbine, 37-vapour pipe, 38-gas line, 39-waste discharge tracheae, 40-blast main.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
See Fig. 1, the present invention mainly comprises internal combustion turbine 1, waste heat boiler 4, steam turbine 36, internal heat type fluidized bed dryer 32, spray column 15, airheater 8 etc.
Internal combustion turbine 1 is connected with generator 35, internal combustion turbine 1 exhanst gas outlet is connected with waste heat boiler 4 by flue 2, vapour generator 3 and water-heater 5 is provided with in waste heat boiler 4, and be connected with smoke exhaust pipe 6, waste heat boiler 4 vapour outlet is connected with steam turbine 36, steam turbine 36 is connected with generator 35, the extraction steam pipe 33 of steam turbine 36 is connected with heating surface tube 31 entrance of internal heat type fluidized bed dryer 32, steam turbine 36 steam drain is connected with condenser 34, and be connected with deoxygenator 22 by condensate pipe 21, the heating surface tube 31 of internal heat type fluidized bed dryer 32 exports and is connected with deoxygenator 22 through drain pipe 20, deoxygenator 22 is connected with vapour generator 3 water-in through service pump 23, water-heater 5 hot water outlet of described waste heat boiler 4 is connected with airheater 8, and airheater 8 cooling water outlet is connected by the water-in of recycle pump 7 with water-heater 5, airheater 8 air outlet is connected with internal heat type fluidized bed dryer 32 blast inlet, internal heat type fluidized bed dryer 32 air outlet is connected with fly-ash separator 28 in turn, induced draft fan 27 and moisture condensation device, the pneumatic outlet of moisture condensation device is communicated with airheater 8 inlet mouth by gas blower 9, gas blower 9 exports and is also connected with waste discharge tracheae 39, described waste discharge tracheae 39 outlet is connected with gas sweetening or odor removal, the waste gas of waste air tube drainage can be introduced sludge incinerating boiler and burn, or introducing internal combustion turbine 1 burns, or through the deodorizing of deodorizing sterilizing device, directly be discharged in air after sterilization, internal heat type fluidized bed dryer 32 opening for feed connects wet sludge pipe 30, discharge port row connects dewatered sludge pipe 17, wet mud enters into internal heat type fluidized bed dryer 32 through wet sludge pipe 30, in the outer flowing of heating surface tube 31, dewatered sludge pipe 17 is entered from discharge port after drying.
Further, described moisture condensation device is spray column 15, and induced draft fan 27 is connected with the inlet mouth of spray column 15, and the air outlet of spray column 15 is connected with gas blower 9; Be disposed with mist eliminator 25, spray header 24 and water collecting basin 13 in spray column 15 from top to bottom, be provided with interchanger 14 in water collecting basin 13, water collecting basin 13 is connected with spray header 24 by recycle pump 7, and water collecting basin 13 is also provided with water shoot 12.
Described moisture condensation device pneumatic outlet is connected with mixing wind tube 10, and mixing wind tube 10 is communicated with gas blower 9, and airheater 8 air outlet is divided into two-way, and a road is connected with internal heat type fluidized bed dryer 32 blast inlet, and another road is communicated with mixing wind tube 10.
The fume afterheat of discharge of gas turbine produces steam and hot water, Steam Actuation turbine driven set generating, steam turbine draw gas as the thermal source of fluidized bed dryer, the fluidized wind of hot water to fluidized bed dryer preheats, fluidized wind sealing and circulating uses, and the steam that wet drying sludge produces is outer after condensation in spray column 15 to be arranged; High-grade energy generates electricity, low-grade energy dry wet mud, high efficiency of energy, cascade utilization; Make full use of low-temperature flue gas waste heat, energy utilization rate improves further; Wet drying sludge does not consume high-grade energy, and drying cost is low; Wet drying sludge does not use fuel separately, does not discharge pollutants; Fluidized wind recycles, and not outer row has gas with foreign flavor; System stability, continuous seepage, dry tenacity is large, and the dry amount of mud is large.Therefore, the present invention can realize drying sludge, the object reaching energy-saving and emission-reduction and develop a circular economy under the prerequisite of safety, environmental protection and economy.
Also disclose a kind of method utilizing internal combustion turbine waste heat sludge-drying, comprise the following steps:
(1), the gas line 38 of described internal combustion turbine 1 and blast main 40 provide combustion gas and air respectively to internal combustion turbine 1 and burn, flue gas propelling gas turbine engine 1 high speed rotating of High Temperature High Pressure drive electrical generators 35 generate electricity, the flue gas that internal combustion turbine 1 discharges 450 DEG C to 600 DEG C enters waste heat boiler 4 by flue 2, flue gas is reduced to less than 200 DEG C and produces medium temperature and medium pressure to temperature after vapour generator 3 heat release, the steam that pressure is greater than 2.5MPa, temperature is greater than 400 DEG C; Flue gas after cooling is further to water-heater 5 heat release, and funnel temperature is reduced to less than 100 DEG C further and discharges from smoke exhaust pipe 6, makes full use of flue gas low-temperature waste heat;
(2), the medium temperature and medium pressure steam that produces of vapour generator 3 enters steam turbine 36 pushing turbine 36 drive electrical generators 35 by vapour pipe 37 and generates electricity, and steam turbine 36 extraction section steam enters internal heat type fluidized bed dryer 32 through extraction steam pipe 33; The exhaust steam that steam turbine 36 discharges enters condenser 34 and condenses into water, enters deoxygenator 22 through condensate pipe 21; Enter into the flowing in heating surface tube 31 of drawing gas of internal heat type fluidized bed dryer 32, the wet mud of internal heat type fluidized bed dryer 32 is entered in the outer flowing of heating surface tube 31 through wet sludge pipe 30, condense into water after the wet mud heat release of the flowing outside heating surface tube 31 of drawing gas of flowing in heating surface tube 31, and enter into deoxygenator 22 through drain pipe 20 and complete deoxygenation process; Deaerated water in deoxygenator 22 enters into vapour generator 3 through service pump 23, is transformed into medium temperature and medium pressure steam and enters into steam turbine 36 again through vapour pipe 37, complete circulation from flue gas after heat absorption; Internal heat type fluidized bed dryer 32 arranges wet sludge pipe 30, dewatered sludge pipe 17, heating surface tube 31, and internal heat type fluidized bed dryer 32 arranges heating duct 19 respectively, arranges circulation airduct 29 on top in bottom.The wet mud entering into internal heat type fluidized bed dryer 32 from wet sludge pipe 30 is full of the gap between heating surface tube 31; The hot blast entering into internal heat type fluidized bed dryer 32 from heating duct 19 upwards flows, and drive the mud between different heating surface tube 31 to carry out flowing and being in fluidization, strengthen the heat exchange between mud and heating surface tube 31, after mud heat absorption, water vapor evaporation enters in the middle of fluidized wind; Sludge-drying is discharged from dewatered sludge pipe 17; Fluidized wind carries water vapor and partial sludge particle leaves internal heat type fluidized bed dryer 32, enters into circulation airduct 29.
(3), the recirculating air carrying mud granule entered in circulation airduct 29 carries out dedusting in fly-ash separator 28, and the recirculating air after dedusting enters into spray column 15 through induced draft fan 27; Water collecting basin 13 inner cold water is transported to spray header 24 and is atomized into water droplet by recycle pump 7, the recirculating air entered in spray column 15 upwards flows, be atomized after water droplet flow downward, the two countercurrent flow heat exchange, the water vapor in recirculating air cools and condenses into water and enters into water collecting basin 13; Recirculating air containing water droplet upwards flows further and through mist eliminator 25, the water droplet in recirculating air is captured down, enter into water collecting basin 13, and the recirculating air after demist leaves spray column 15 and enters into exhaust duct 26; Arrange interchanger 14 in water collecting basin 13, continuously the heat in water collecting basin 13 taken away, make the water temperature of water collecting basin 13 maintain certain low temperature, maintain cooling power to recirculating air; The condensed water that spray column 15 produces is discharged through water shoot 12;
The recirculating air entering exhaust duct 26 enters into airheater 8 through gas blower 9, carries out heat exchange with the hot water from circulating pipe 18, gas blower 9 exports and is also connected with waste discharge tracheae 39, unnecessary recirculating air is discharged through waste discharge tracheae 39, the waste gas of waste air tube drainage can be introduced sludge incinerating boiler and burn, or introducing internal combustion turbine 1 burns, or be directly discharged in air after the deodorizing of deodorizing sterilizing device, sterilization; Recirculating air temperature is left airheater 8 after raising and is entered into heating duct 19, enters into internal heat type fluidized bed dryer 32, complete circulation as fluidized wind; Hot water from circulating pipe 18 enters into airheater 8, after recirculating air heat release, temperature reduces and is transformed into cold water, cold water leaves airheater 8, enters the cooling water inlet of water-heater 5 through recycle pump 7, cold water in water-heater 5 from flue gas endothermic transition become hot water to enter into circulating pipe 18 again, complete circulation.
Further, although the recirculating air in spray column 15 before leaving spray column 15 through demist process, because the water vapor in recirculating air is in state of saturation substantially, there is certain corrodibility.In order to avoid exhaust duct 26, gas blower 9, airheater 8 corrode; heating duct 19 is introduced recirculating air arm 16 and is connected with exhaust duct 26; exhaust duct 26 is communicated with mixing wind tube 10; mixing wind tube 10 is communicated with gas blower 9, mix with recirculating air from heating duct 19 extension hot blast to exhaust duct 26, the recirculating air temperature guaranteed in mixing wind tube 10 maintain mixing wind water vapor temperature of saturation more than.
Claims (6)
1. one kind utilizes the system of internal combustion turbine waste heat sludge-drying, it is characterized in that: comprise internal combustion turbine (1), internal combustion turbine (1) is connected with generator (35), internal combustion turbine (1) exhanst gas outlet is connected with waste heat boiler (4), vapour generator (3) and water-heater (5) is provided with in waste heat boiler (4), waste heat boiler (4) vapour outlet is connected with steam turbine (36), steam turbine (36) is connected with generator (35), the extraction steam pipe (33) of steam turbine (36) is connected with heating surface tube (31) entrance of internal heat type fluidized bed dryer (32), steam turbine (36) steam drain is connected with condenser (34), condenser (34) is connected with deoxygenator (22), heating surface tube (31) outlet of internal heat type fluidized bed dryer (32) is connected with deoxygenator (22), deoxygenator (22) is connected with vapour generator (3) water-in through service pump (23), water-heater (5) hot water outlet of described waste heat boiler (4) is connected with airheater (8), and airheater (8) cooling water outlet is connected by the water-in of recycle pump (7) with water-heater (5),
Airheater (8) air outlet is connected with internal heat type fluidized bed dryer (32) blast inlet, internal heat type fluidized bed dryer (32) air outlet is connected with fly-ash separator (28), induced draft fan (27) and moisture condensation device in turn, the pneumatic outlet of moisture condensation device is communicated with airheater (8) inlet mouth by gas blower (9), and gas blower (9) outlet is also connected with waste discharge tracheae (39);
Internal heat type fluidized bed dryer (32) opening for feed connects wet sludge pipe (30), discharge port connects dewatered sludge pipe (17), wet mud enters into internal heat type fluidized bed dryer (32) through wet sludge pipe (30), flows outward, enters dewatered sludge pipe (17) from discharge port after drying at heating surface tube (31);
Described moisture condensation device pneumatic outlet is connected with mixing wind tube (10), mixing wind tube (10) is communicated with gas blower (9), airheater (8) air outlet is divided into two-way, one tunnel is connected with internal heat type fluidized bed dryer (32) blast inlet, and another road is communicated with mixing wind tube (10);
Described waste discharge tracheae (39) outlet is connected with gas sweetening or odor removal.
2. the system utilizing internal combustion turbine waste heat sludge-drying according to claim 1, it is characterized in that: described moisture condensation device is spray column (15), induced draft fan (27) is connected with the inlet mouth of spray column (15), and the air outlet of spray column (15) is connected with gas blower (9); Mist eliminator (25), spray header (24) and water collecting basin (13) is disposed with from top to bottom in spray column (15), interchanger (14) is provided with in water collecting basin (13), water collecting basin (13) is connected with spray header (24) by recycle pump (7), and water collecting basin (13) is also provided with water shoot (12).
3., based on a drying method for sludge for claim 1 system, it is characterized in that comprising the following steps:
(1), combustion gas and air enter internal combustion turbine (1) burning, flue gas propelling gas turbine engine (1) high speed rotating of High Temperature High Pressure drive electrical generators (35) generating, the flue gas that internal combustion turbine (1) discharges enters waste heat boiler (4), flue gas is to vapour generator (3) heat release of waste heat boiler (4), and vapour generator (3) produces steam; Flue gas after cooling is discharged further after the water-heater of waste heat boiler (4) (5) heat release;
(2), the steam that produces of vapour generator (3) enters steam turbine (36) and pushing turbine (36) drive electrical generators (35) generating, and the some vapor extracted out from steam turbine (36) enters internal heat type fluidized bed dryer (32); The exhaust steam that steam turbine (36) discharges enters after condenser (34) condenses into water and enters deoxygenator (22); Enter drawing gas to flow after heat release in moisture eliminator heating surface tube (31) and condensing into water of internal heat type fluidized bed dryer (32), condensed water enters into deoxygenator (22); The wet mud entering into internal heat type fluidized bed dryer (32) from wet sludge pipe (30) is full of the gap between heating surface tube (31); The hot blast that airheater (8) produces enters in internal heat type fluidized bed dryer (32) and upwards flows, drive the mud between different heating surface tube (31) to carry out flowing and being in fluidization, after mud heat absorption, water vapor evaporation enters in the middle of fluidized wind; Sludge-drying is discharged from dewatered sludge pipe (17); Fluidized wind carries water vapor and partial sludge particle leaves internal heat type fluidized bed dryer (32), enters in fly-ash separator (28);
(3) deaerated water, in deoxygenator (22) is transformed into steam after entering after service pump (23) and absorbing heat in vapour generator (3) and enters into steam turbine (36) again; Moisture condensation device is entered through induced draft fan (27) after the fluidized wind carrying mud granule carries out dedusting in fly-ash separator (28), water vapor in fluidized wind cools and condenses into water, the fluidized wind of removing steam enters into airheater (8) as recirculating air through gas blower (9), carries out heat exchange with the hot water from water-heater (5), recirculating air temperature is left airheater (8) after raising and is again entered in internal heat type fluidized bed dryer (32) as fluidized wind, and unnecessary recirculating air is discharged through waste discharge tracheae (39); Hot water in airheater (8) becomes cold water after recirculating air heat release, and cold water leaves airheater (8), enter water-heater (5) endothermic transition from flue gas through recycle pump (7) becomes hot water to enter into circulating pipe (18) again.
4. drying method for sludge according to claim 3, it is characterized in that: described moisture condensation device is spray column (15), water collecting basin (13) inner cold water is transported to spray header (24) and is atomized into water droplet by recycle pump (7), the recirculating air entered in spray column (15) upwards flows, be atomized after water droplet flow downward, the two countercurrent flow heat exchange, the water vapor in recirculating air cools and condenses into water and enters into water collecting basin (13); Recirculating air containing water droplet upwards flows further and through mist eliminator (25), the water droplet in recirculating air is captured down, enter into water collecting basin (13), and the recirculating air after demist leaves spray column (15); Arrange interchanger (14) in water collecting basin (13), continuously taken away by the heat in water collecting basin (13), the condensed water that spray column (15) produces is discharged through water shoot (12).
5. the drying method for sludge according to claim 3 or 4, it is characterized in that: described moisture condensation device pneumatic outlet is connected with mixing wind tube (10), mixing wind tube (10) is communicated with gas blower (9), airheater (8) air outlet is divided into two-way, one tunnel is connected with internal heat type fluidized bed dryer (32) blast inlet, another road is communicated with mixing wind tube (10), mix with recirculating air to mixing wind tube (10) from airheater (8) extension hot blast, guarantee that the recirculating air temperature in mixing wind tube (10) maintains more than the temperature of saturation of water vapor in mixing wind.
6. the drying method for sludge according to claim 3 or 4, it is characterized in that: the flue-gas temperature that described internal combustion turbine (1) discharges is 450 DEG C to 600 DEG C, flue gas enters waste heat boiler (4) and is reduced to less than 200 DEG C to temperature after vapour generator (3) heat release, and vapour generator (3) produces the medium temperature and medium pressure steam that pressure is greater than 2.5MPa, temperature is greater than 400 DEG C; Flue gas after cooling is further after water-heater (5) heat release, and flue-gas temperature is reduced to less than 100 DEG C further, finally discharges through smoke exhaust pipe (6).
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| CN201310518977.8A CN103539333B (en) | 2013-10-28 | 2013-10-28 | System and method for drying sludge through waste heat of gas turbine |
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| CN201310518977.8A CN103539333B (en) | 2013-10-28 | 2013-10-28 | System and method for drying sludge through waste heat of gas turbine |
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| CN103979766A (en) * | 2014-05-26 | 2014-08-13 | 南京理工大学 | Indirect sludge drying tail gas treatment device and treatment method thereof |
| CN104176897A (en) * | 2014-08-27 | 2014-12-03 | 无锡市杰家化工装备有限公司 | Environment-friendly and energy-saving sludge high-temperature carbonization system |
| CN104176898B (en) * | 2014-08-29 | 2015-10-28 | 凤阳海泰科能源环境管理服务有限公司 | A kind of sludge drying system and method |
| CN104863714A (en) * | 2015-06-01 | 2015-08-26 | 江苏华强新能源科技有限公司 | Exhaust device for gas turbine |
| CN104944716A (en) * | 2015-06-04 | 2015-09-30 | 青岛坎比环保能源有限公司 | Medium-pressure superheated steam-based continuous anaerobic sludge digestion pretreatment device and method |
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| CN108239483B (en) * | 2016-12-26 | 2021-03-26 | 中国林业科学研究院资源昆虫研究所 | Low-temperature drying method for bleached lac |
| 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 |
| CN108842337B (en) * | 2018-07-25 | 2024-08-02 | 山东鑫蓝新能源科技有限公司 | Energy supply system of textile printing and dyeing production line |
| CN108867142B (en) * | 2018-07-25 | 2024-05-03 | 山东鑫蓝新能源科技有限公司 | Energy supply system of papermaking production line |
| CN109455898A (en) * | 2018-12-21 | 2019-03-12 | 江苏格陵兰传热科技有限公司 | Sludge drying system based on hot industry exhaust gas |
| CN111548029B (en) * | 2020-05-20 | 2022-04-01 | 大峘集团有限公司 | Preparation method of metallurgical waste residue micro powder |
| CN111748981B (en) * | 2020-06-16 | 2021-09-03 | 广东天美洗涤有限公司 | Through type drying equipment |
| CN113958960A (en) * | 2021-10-28 | 2022-01-21 | 中原环保股份有限公司 | Municipal sludge treatment system |
| CN115521041B (en) * | 2022-09-21 | 2023-09-22 | 佛山吉康智能设备制造有限公司 | Sludge low-temperature drying deodorization system and control method |
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| CN102531318A (en) * | 2011-12-06 | 2012-07-04 | 华北电力大学（保定） | Sludge drying and incinerating integrated zero-discharge treatment system and treatment process |
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| CN102531318A (en) * | 2011-12-06 | 2012-07-04 | 华北电力大学（保定） | Sludge drying and incinerating integrated zero-discharge treatment system and treatment process |
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