CN107339702A - A kind of method of cement kiln synergic processing urban and rural domestic refuse - Google Patents

Abstract

The invention discloses a method for co-processing urban and rural household garbage by a cement kiln, which relates to the technical field of garbage disposal systems. Including domestic waste pretreatment system, domestic waste incineration system, domestic waste leachate treatment system, deodorization system and bypass ventilation system, as the main disposal link, the domestic waste pretreatment system and domestic waste incineration system can be It can be carried out in different places or it can be built in a centralized manner. The domestic waste pretreatment system and the domestic waste incineration system need to be equipped with a domestic waste leachate treatment system and a deodorization system. The domestic waste incineration system also needs to be equipped with a bypass ventilation system. The invention has the advantages of simple operation, stable operation, small investment and high benefit, realizes harmless disposal of waste residue, waste water and waste gas, and can fully meet the requirements of national standards for environmental impact, and truly realizes "harmless and resourceful domestic waste" , Capacity reduction, environmental protection" purpose.

Description

A method for co-processing urban and rural domestic waste in cement kilns

technical field

The invention relates to the technical field of garbage disposal systems, in particular to a method for co-processing urban and rural household garbage by cement kilns.

Background technique

Urban and rural domestic waste generally refers to solid waste generated by urban and rural residents. At present, there is no thorough and effective classified collection of household garbage in China, so urban and rural household garbage is also mixed with commercial garbage, garbage generated in municipal maintenance and management.

At present, the annual domestic garbage production amounted to 165 million tons, and the backlog of garbage in our country reached more than 7 billion tons. With the increase of urban and rural population in the future, the annual waste generation is expected to increase at a rate of 8%. The vast majority of domestic garbage has been piled up in the suburbs without treatment, occupying an area of 500 million square meters of land. Garbage dumped indiscriminately damages urban and rural landscapes and breeds pests and bacteria that spread disease. Garbage that has not been effectively treated for a long time is easy to ferment, and the generated harmful gases such as ammonia, nitrogen, sulfide, and methane form stench, pollute the environment, emit heat, and even cause explosions. A large number of acidic and alkaline organic pollutants dissolve heavy metals in garbage, becoming a concentrated pollution source of organic matter, heavy metals and pathogenic microorganisms, polluting the surrounding surface water or infiltrating groundwater, causing serious pollution of water resources, and then entering the human body through the food chain to affect health.

Disposal of urban and rural domestic waste has become a worldwide concern, and it is a very arduous comprehensive and systematic project. Many developed countries in the world have adopted various methods to deal with urban and rural domestic waste, such as: landfill method, composting method, heat treatment method, worm method, feeding of urban and rural domestic waste, bacterial digestion, water-borne method, microwave treatment Law or classification recycling, comprehensive utilization and so on. The main treatment methods are landfill, composting and heat treatment. The landfill method will occupy a large amount of land resources, and at the same time, it will cause environmental problems such as leachate leakage, polluting groundwater, and emitting a large amount of greenhouse gas methane into the atmosphere; the stench problem, product quality and product outlet problems caused by the composting method have always been obstacles. Reasons for the promotion and application of composting treatment methods; the heat treatment method currently mainly uses the incineration method, which is also a garbage treatment method commonly used in countries all over the world. It has the characteristics of large processing capacity, good compatibility and heat recovery.

As a method of waste incineration, cement kiln co-processing of domestic waste has been used more and more in my country, but the existing cement kiln co-processing domestic waste technology has a low utilization rate of waste calorific value, and the heat generated by waste combustion cannot be fully utilized. The existing technology is only suitable for bulk, light, flammable, low-moisture garbage, and the cement kiln system itself is affected by factors such as the moisture content in the garbage, the particle size, and the incineration position of the garbage in the cement kiln. Greater impact. Problems such as the odor generated during the pretreatment process, storage and transportation of garbage, leachate, and waste residue generated after garbage incineration have not been effectively and thoroughly dealt with.

To sum up, the present invention designs a method for co-processing urban and rural domestic waste in cement kilns.

Contents of the invention

Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a method for co-processing urban and rural household garbage in cement kilns, which is easy to operate, stable in operation, small in investment and high in benefit, and can realize harmless treatment of waste residue, waste water and waste gas Disposal, the impact on the environment can fully meet the requirements of national standards, and truly realize the purpose of "harmless, resourceful, volume reduction, and environmental protection" of domestic waste.

In order to achieve the above object, the present invention is achieved through the following technical solutions: a cement kiln co-processing system for urban and rural domestic waste, including a domestic waste pretreatment system, a domestic waste incineration system, a domestic waste leachate treatment system, and a deodorization system and bypass ventilation system, the odorous air from the domestic waste pretreatment system, domestic waste incineration system, and domestic waste leachate treatment system is sealed and connected to the deodorization system through the exhaust pipe; from the domestic waste pretreatment system, domestic waste incineration system , The leachate or process wastewater of the deodorization system passes through the collection tank and is transported to the leachate treatment system through pipelines. The domestic waste incineration system needs to be implanted into the existing cement clinker production line through thermal equipment transformation, and the bypass ventilation system The thermal pipeline is connected with the cement clinker production line to extract part of the high-temperature flue gas to control the content of sulfur, chlorine and alkali; the domestic waste pretreatment system and domestic waste incineration system are the main disposal links, which can be based on different construction conditions. Local implementation can also be centralized construction. The domestic waste pretreatment system and the domestic waste incineration system need to be equipped with a domestic waste leachate treatment system and a deodorization system. The domestic waste incineration system also needs to be equipped with a bypass ventilation system.

Preferably, the domestic waste pretreatment system includes a mobile air compressor, a first grab bridge crane, a shear crusher, a baffle flat belt conveyor, a second grab bridge crane, a dehydrator, a lower Steel silo, third grab bridge crane, belt-type speed-adjustable quantitative feeder, pipe conveyor, landfill leachate, original ecological waste storage pit, crushed waste storage pit and dehydrated waste storage pit, domestic waste It is transported to the original ecological garbage storage pit of the pretreatment workshop by the garbage transport vehicle. A mobile air compressor for cleaning the vehicle is installed on one side of the garbage transport vehicle, and then transported to the top of the shear crusher by the first grab bridge crane The lower hopper is sent to the storage pit by the belt conveyor after crushing; in the storage pit, the garbage undergoes the second grab bridge crane turning, forced ventilation, the biological fermentation speed increases, and the free water content increases; 5-10 Days later, the garbage is sent to the dewatering machine by the second grab bridge crane for extrusion and dehydration, and then sent to the unloading steel bin, which is then sent to the dehydrated garbage storage pit. The grab bridge crane sends it to the belt-type speed-adjustable quantitative feeder, and transports it to the domestic waste incineration system through the pipe conveyor for processing.

As a preference, the domestic waste incineration system includes three air lock valves, a cold material bin, a decomposition furnace, a four-stage cyclone, a hot plate furnace and a cooling fan, and a belt conveyor is arranged above the three air lock valves, and The three air lock valves are sealed and connected to the hot plate furnace through the feeding pipe. A cooling fan is installed under the hot plate furnace. For the cement clinker production line, the ascending flue of the flue chamber is rebuilt to the cone of the calciner and then implanted. The domestic waste entering the hot plate furnace is ignited and burned in the hot plate furnace, and then enters the cement kiln through the ascending flue for further incineration. .

As preferably, the domestic waste leachate treatment system (3) includes anaerobic treatment module, denitrification module, nitrification module, cooling system module, ultrafiltration module (3-5), nanofiltration module, reverse osmosis module, garbage The leachate will enter the underground leachate collection tank by gravity. When the liquid level in the collection tank reaches a certain height, the sewage pump will pump the leachate to the adjustment tank of the anaerobic treatment module for leachate treatment. After the denitrification module, The sludge and concentrate produced after the nitrification module, cooling system module, ultrafiltration module, nanofiltration module, and reverse osmosis module are directly transported to the cement kiln for incineration and disposal, which effectively reduces the disposal cost of secondary waste; the treated water is recycled It is used in the process system to realize zero discharge of waste water.

Preferably, the deodorization system includes a confluence box, a deodorization fan, a water bath dust removal device, a biological filter, a pre-washing tank, a sludge discharge tank, a spray tank, an activated carbon tower and a grate cooler cooling fan duct, The bellows are connected in sequence with the water bath dust removal device, the biological filter and the activated carbon tower through the deodorizing fan. The pre-washing pool, the sludge discharge tank and the spraying pool are arranged under the biological filter. The combined wind box is also cooled by the induced draft fan and the grate cooler The air pipes are connected; the biological filter and the spray pool are sealed and connected through an exhaust pipe, and a fan and a confluence box are installed on the right side of the biological filter.

As a preference, the bypass ventilation system includes a bypass cyclone, a flue gas cooler, a dust collector, a second cooling fan and an ash storage bin, and the second cooling fan extracts excess potassium, sodium, and chlorine gases, and passes through the bypass The road cyclone, flue gas cooler, and dust collector will discharge the cement clinker burning system. After extracting a certain amount of gas, it can effectively reduce or avoid the crusting and agglomeration of chlorine elements. The air volume of the bypass ventilation system is determined by The chlorine content in the garbage and the chlorine content in the cement raw meal are determined, and the flue gas cooler and dust collector are also connected with the ash storage bin.

A method for the co-processing of urban and rural domestic waste by cement kilns. The specific process is as follows: the original ecological domestic waste enters the original ecological domestic waste storage pit after arriving at the factory, and passes through the plate feeder and shear crusher in sequence through the grab bridge crane. Complete the initial breaking operation, and form 90% of the garbage fragments with a particle size of <200mm. In the domestic garbage storage pit, the grab bucket is regularly turned over, the bottom blast device is periodically blown, and the leachate is sprinkled for biological drying treatment for 5-10 days. Biochemical treatment is that domestic waste fragments are mechanically dehydrated by a plate feeder and a dehydrator in turn through a bridge-type crane with a grab bucket, and then sent to the finished product domestic waste storage area, and then dumped into the finished product garbage warehouse by the grab bucket.

As a preference, the deodorization system sends the odorous air from the domestic waste pretreatment system, domestic waste incineration system, and domestic waste leachate treatment system through sealed pipes and fans into the air through the fan when the supporting cement production line is running normally. Next to the cement kiln head cooler, it is used as wind dissipation for the cement production process, and it is sent to a professional deodorization device for purification in an emergency.

The present invention has the following beneficial effects:

1. Make full use of the hot plate furnace's characteristics of wide use range and low moisture requirements for waste, which greatly reduces the pre-treatment (such as classification and sorting) work of waste incineration.

2. By adopting the combined garbage pretreatment method of mechanical treatment and biological drying, the particle size and moisture content of the garbage are greatly reduced, the calorific value of the garbage is increased, and the impact on the cement clinker burning system is reduced.

3. Making full use of the calorific value of garbage and the chemical composition of garbage can reduce the coal consumption of the cement clinker burning system and increase the power generation of the waste heat power generation system. At the same time, the amount of denitrification ammonia water at the kiln tail is reduced.

4. Make full use of the high firing temperature of the rotary kiln system and the formation conditions of cement clinker, mix the residue and fly ash produced after garbage incineration into the raw meal, and finally calcinate at high temperature to make cement clinker, domestic garbage The harmful heavy metal elements in the waste are solid-dissolved in the clinker to form silicate minerals, which avoids the harm of the heavy metals in the garbage to the environment.

5. By extracting the odor from the pretreatment workshop and the co-processing workshop, the pre-treatment workshop and the co-processing workshop are kept in a slight negative pressure state, which effectively prevents the overflow of the odor, and at the same time, this part of the odor is sent to the grate cooler to act as cooling air In use, it is treated at a high temperature above 1400°C in the rotary kiln and above 900°C in the decomposition furnace to ensure that the odor factor is completely decomposed.

6. The water after the landfill leachate is treated by the landfill leachate treatment system is reused in the process system, realizing zero discharge of waste water. The generated sludge and concentrated liquid are directly transported to the cement kiln for incineration, which effectively reduces the disposal cost of secondary waste.

7. The content of potassium, sodium and chlorine in the garbage is relatively high. After a certain amount of gas is extracted by configuring the bypass ventilation system, it can effectively reduce or avoid crusting and agglomeration in the kiln, thereby avoiding fluctuations in cement kiln production.

Description of drawings

The present invention is described in detail below in conjunction with accompanying drawing and specific embodiment;

Fig. 1 is a system flow chart of the present invention;

Fig. 2 is the flow chart of domestic waste pretreatment system of the present invention;

Fig. 3 is a flow chart of the domestic waste incineration system of the present invention;

Fig. 4 is the flow chart of the domestic waste leachate treatment system of the present invention;

Fig. 5 is a flow chart of the deodorization system of the present invention;

Fig. 6 is a flow chart of the bypass ventilation system of the present invention;

In the figure: 1. Household waste pretreatment system; 1-1. Mobile air compressor; 1-2. Bridge crane with the first grab bucket; 1-3. Shear crusher; 1-4. Baffle flat Belt conveyor; 1-5, the second grab bridge crane; 1-6, dehydrator; 1-7, blanking steel warehouse; 1-8, the third grab bridge crane; 1-9, belt adjustment Speed quantitative feeder; 1-10, tube conveyor; 1-11, landfill leachate; 1-12, original ecological waste storage pit; 1-13, crushed waste storage pit; 1-14, dehydrated waste Storage pit; 2. Domestic waste incineration system; 2-1, three air lock valves; 2-2, cold material bin; 2-3, decomposition furnace; 2-4, four-stage cyclone; 2-5, hot plate Furnace; 2-6, cooling fan; 3, domestic waste leachate treatment system; 3-1, anaerobic treatment module; 3-2, denitrification module; 3-3, nitrification module; 3-4, cooling system module; 3-5, ultrafiltration module; 3-6, nanofiltration module; 3-7, reverse osmosis module; 4, deodorization system; 4-1, confluence box; 4-2, fan; 4-3, water bath type dust removal ;4-4, biological filter; 4-5, pre-washing pool; 4-6, sludge discharge tank; 4-7, spray pool; 4-8, activated carbon tower; 4-9, grate cooler cooling fan 5. Bypass windproof system; 5-1. Bypass cyclone; 5-2. Flue gas cooler; 5-3. Dust collector; 5-4. Second cooling fan; 5-5. Ash accumulation warehouse.

detailed description

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

Referring to Figures 1-6, this embodiment adopts the following technical solutions: a cement kiln co-processing system for urban and rural domestic waste, including a domestic waste pretreatment system 1, a domestic waste incineration system 2, a domestic waste leachate treatment system 3, and a waste removal system. The odor system 4 and the bypass air release system 5 are characterized in that: the domestic waste pretreatment system and the domestic waste incineration system as the main disposal link can be implemented in separate areas or can be constructed in a centralized manner according to different construction conditions; the domestic waste pretreatment system The domestic waste incineration system needs to be equipped with a domestic waste leachate treatment system and deodorization system; the domestic waste incineration system also needs to be equipped with a bypass ventilation system; The odor-containing air is sealed and connected to the deodorization system through the exhaust pipe; the leachate or process wastewater from the domestic waste pretreatment system, domestic waste incineration system, and deodorization system passes through the collection tank and is transported to the leachate treatment system through pipelines. The domestic waste incineration system needs to be implanted into the existing cement clinker production line through thermal equipment transformation, and the bypass ventilation system is connected to the cement clinker production line through thermal pipelines to extract part of the high-temperature flue gas for sulfur, chlorine, and alkali content control.

The domestic waste pretreatment system of this specific embodiment: the domestic waste is transported to the original ecological waste storage pit 1-12 of the pretreatment workshop by the waste transport vehicle, and then transported to the shearing type crushing by the first grab bridge crane 1-2 The lower hopper above the machine 1-3 is sent to the storage pit 1-13 by the belt conveyor 1-4 after crushing. In the storage pit, the garbage undergoes 1-5 turnover and forced ventilation by the second grab bridge crane, the biological fermentation speed increases, and the free water content increases. After 5-10 days, the garbage is sent to the dehydrator 1-6 by the second grab bridge crane 1-5 for squeezing and dehydration. The dehydrated garbage is transported to the domestic garbage incineration system through the quantitative feeder 1-9 and the pipe conveyor 1-10 for processing. The invention adopts the combined garbage dehydration method of biological drying and mechanical dehydration, and the crushed household garbage is ventilated with a blower in a storage pit that is independently stored for 10 days, and at the same time, the crane is used to perform stacking operations, so that the household garbage can undergo aerobic fermentation , to remove part of the internal water of domestic waste, which helps to reduce the moisture content of domestic waste, and at the same time increases the calorific value of domestic waste, which is helpful for co-processing.

Domestic waste incineration system: The pretreated domestic waste enters the dehydrated waste storage pit 1-14, and then is sent to the weighing feeding bin by the driving grab bucket, and is transported to the cement kiln tower after weighing, and passes through three air lock valves 2 -1 is sent to the hot plate furnace 2-6, and the drying and ignition are completed in the high-temperature tertiary air (900°C), the temperature at the outlet of the hot plate furnace will increase, and the incineration temperature is adjusted to 1050°C. After incineration, the residue enters the cement clinker production line system to form cement clinker; the gas generated by incineration undergoes high-temperature combustion in an alkaline environment to completely decompose harmful components, and is discharged into the atmosphere after being cooled by a specific rapid heat exchange process at the end of the cement kiln. Compared with the off-line garbage gasification combustion furnace, the on-line hot plate furnace technology of the present invention produces high-temperature gas, waste combustion ash, raw meal and small-particle sintering slag, etc., all enter the decomposition furnace, and a small amount of large particles The sintered slag falls from the kiln tail ascending flue into the rotary kiln. The thermal energy in the garbage is fully utilized, and all materials and gases are taken from and returned to the original system, which greatly improves the thermal efficiency of the system and avoids the heat loss and reuse process of waste slag discharge.

Domestic waste leachate treatment system: The main source of landfill leachate is primary waste through aerobic fermentation and mechanical dehydration, which generally produces high-concentration organic wastewater. Due to a certain slope at the bottom of the storage pit, the landfill leachate will enter the underground leachate collection pool 1-11 by gravity, and when the liquid level in the collection pool reaches a certain height, the sewage pump will pump the leachate to the anaerobic treatment module 3 -1 In the regulating tank, leachate treatment is carried out. Necessary anti-seepage measures have been taken at the bottom and surroundings of the original garbage storage pit and the leachate collection tank, which not only prevents the seepage of leachate, but also avoids the infiltration of groundwater. Sludge and concentrated The liquid is directly transported to the cement kiln for incineration and disposal, which effectively reduces the disposal cost of secondary waste; the treated water is reused in the process system, realizing zero discharge of waste water.

Deodorization system: When the cement kiln is in normal operation, the odor from the pretreatment workshop and the co-processing workshop is introduced by the induced draft fan and enters the grate cooler of the cement kiln through the cooling fan duct 4-9 of the grate cooler, and is used as cooling air to reduce odor. The volatile organic compounds in the air are burned in the process of contacting with high-temperature clinker, and the burned air is used as secondary air, which is treated at a high temperature above 1400°C in the rotary kiln and above 900°C in the decomposition furnace to ensure the odor factor—— Volatile organic compounds are completely decomposed. When the cement kiln is shut down, the odor is sent to a professional deodorization device for purification. The professional deodorization device consists of confluence box 4-1, fan 4-2, water bath dust removal 4-3, biological filter 4-4, pre-washing pool 4-5, sludge discharge pool 4-6, spraying pool 4-7 , 4-8 active carbon towers. The storage and transportation of garbage and the leachate treatment system are fully sealed, and there is no leakage of waste gas.

Bypass ventilation system: Household waste often contains high content of potassium, sodium, and chlorine elements, and their excessive presence will affect the operation stability of the firing system and the quality of cement products. A closed-circuit cycle enrichment is formed in the suitable temperature range of the preheater, causing crusting and blockage at the kiln tail or the corresponding position of the preheater, which affects the stability and normal operation of the firing system in severe cases; excessive potassium, sodium, chlorine, etc. enter Cement clinker, on the one hand, is prone to alkali-aggregate reaction, which shortens the service life of concrete; on the other hand, it also corrodes the steel bars in concrete, affecting its structural strength. For this reason the present invention extracts excessive potassium, sodium, chlorine gas by cooling fan 5-4, discharges cement clinker and burns through bypass cyclone 5-1, flue gas cooler 5-2, dust collector 5-3 The system, after extracting a certain amount of gas, can effectively reduce or avoid the crusting and agglomeration of chlorine elements. The ventilation volume of the bypass ventilation system is determined by the chlorine content in the garbage and the chlorine content in the cement raw meal.

The process principle of this specific embodiment: the domestic garbage is transported by the garbage truck to the pretreatment workshop, first unloaded to the garbage storage pit, and then transported by the crane and grab bucket to the apron feeder above the crusher for even feeding to the crusher. After being broken by the crusher, it slips into the storage pit through the feeding chute, carries out aerobic fermentation for 5-10 days by ventilating the storage pit, and then sends it to the apron feeder above the dehydrator by driving and grabbing bucket to evenly discharge to The dehydrator performs extrusion dehydration, and the dehydrated garbage falls on the apron feeder, and then transported into the unloading storage pit for short-term storage, and is sent to the apron feeder above the finished product warehouse by the crane and grab bucket for feeding to metering. machine, and then transported to the hot plate furnace for incineration through the belt-type speed-adjustable metering feeder and the tubular belt conveyor. Three air lock valves are installed on the feeding pipe of the hot plate furnace to prevent air leakage. When the system is powered off or operated manually, the safety gate valve will be closed immediately. Garbage enters the hot plate furnace through the slide, and the high-temperature tertiary air from the grate cooler enters the hot plate furnace through the tertiary air pipe. It is mainly used as a heat source for the hot plate furnace to incinerate garbage. After the garbage in the hot plate furnace is burned, 1000 The gas above ℃ enters the decomposition furnace, and then burns together with the coal powder, and a certain amount of hot raw material is diverted from the outlet of the four-stage cyclone as an auxiliary heat supply or fed into the hot plate furnace with the carrier of decomposition and heat absorption. The amount of hot raw material can achieve the purpose of controlling the gas temperature of the hot plate furnace. The high-temperature gas produced by the hot plate furnace, the combustion ash of waste materials, raw meal and small-particle sintered slag all enter the calciner, and a small amount of larger-particle sintered slag falls from the kiln tail ascending flue into the rotary kiln, and then passes through the kiln. The rotary kiln system is calcined into cement clinker, and harmful heavy metal elements are solid-dissolved in the clinker at a flame temperature above 1600 degrees in the firing zone of the rotary kiln, so heavy metals will not be leached and migrated during the cement hydration process And pollute the environment. The burned flue gas (containing unburned organic components, etc.) is sent to the decomposition furnace of the cement kiln, and the organic components are continuously decomposed or cracked through the decomposition furnace to achieve the complete decomposition of toxic organic substances, and the exhaust gas at the kiln tail is purified through the dust collection system Exhaust from the chimney. The landfill leachate in the garbage storage pit enters the underground leachate collection pool in a self-flowing manner. When the liquid level in the collection pool reaches a certain height, the sewage pump pumps the leachate to the adjustment pool of the leachate treatment system for leachate treatment. Necessary anti-seepage measures have been taken at the bottom and surroundings of the garbage storage pit and the leachate collection tank, which not only prevents the seepage of leachate, but also avoids the infiltration of groundwater. The sludge and concentrated liquid produced during the leachate treatment process are directly pumped to the cement kiln for incineration and disposal, which effectively reduces the disposal cost of secondary waste; the treated water is reused in the process system, realizing zero discharge of wastewater. The storage and transportation of garbage and the leachate treatment system are fully sealed, and there is no leakage of waste gas. In the storage link, the pretreatment workshop adopts a fully sealed structure and maintains a slight negative pressure state to prevent odor from leaking out. When the cement kiln is in normal operation, the odor from the pretreatment workshop and the co-processing workshop is led to the grate cooler of the cement kiln through the induced draft fan, and is used as cooling air. Combustion, the air after combustion is used as the secondary air, and it is treated at a high temperature above 1400°C in the rotary kiln and above 900°C in the decomposition furnace to ensure the complete decomposition of odorous silver. When the cement kiln is shut down, the deodorization system will be activated, and the deodorization system will extract the odor from the pretreatment workshop and the system disposal workshop for treatment, and then discharge it up to the standard. Due to the high content of potassium, sodium and chlorine in domestic waste, in order to ensure the normal operation of the cement clinker production line, it is necessary to set up a bypass ventilation system. Part of the high-temperature exhaust gas from the kiln tail smoke chamber is extracted from the bypass air outlet, mixed with the cold air blown by the cooling fan in the quench chamber, and cooled to about 350°C, and the coarse particles with low chlorine content are returned to decompose after being air-selected by the cyclone separator Furnace to reduce the amount of ash emitted; fine particles with high chlorine content are cooled to about 130°C through the multi-tube cooler with the airflow, and are discharged into the atmosphere after being purified by the bag filter. The dust collected by the multi-pipe cooler and the dust collector enters the ash storage bin and is transported by the tank truck to the batching bin of the cement batching station through the loading system.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. a kind of system of cement kiln synergic processing urban and rural domestic refuse, it is characterised in that including house refuse pretreatment system (1), consumer waste incineration system (2), domestic landfill leachate treatment system (3), deodoration system (4) and bypass system (5), from house refuse pretreatment system (1), consumer waste incineration system (2), domestic landfill leachate treatment system (3) Deodoration system (4) is sealingly connected to by discharge duct containing smelly air；From house refuse pretreatment system (1), house refuse CIU (2), the percolate of deodoration system (4) or technique waste water are oozed by collecting pit groove through pipeline to house refuse Filtrate processing system (3), consumer waste incineration system need to produce by Thermal Equipment transformation implantation to existing clinker Among line, bypass system (5) be connected by thermal engineering pipeline with cement clinker production line extract part high-temperature flue gas carry out sulphur, Chlorine, alkali content control；Described house refuse pretreatment system and consumer waste incineration system dispose link, its basis to be main Construction condition is different, can be point implement also concentrate construction；House refuse pretreatment system and consumer waste incineration system Need auxiliary construction domestic landfill leachate treatment system, deodoration system；Consumer waste incineration system also needs to auxiliary construction bypass Leak informaton system.

2. the system of a kind of cement kiln synergic processing urban and rural domestic refuse according to claim 1, it is characterised in that described House refuse pretreatment system (1) include portable air compressor (1-1), the first bridge grabbing crane (1-2), shearing broken Broken machine (1-3), baffle plate flat belt machine (1-4), the second bridge grabbing crane (1-5), dewaterer (1-6), blanking steel storehouse (1- 7), the 3rd bridge grabbing crane (1-8), belt speed governing constant feeder (1-9), pipe type conveyer (1-10), garbage filter Garbage storing hole (1-14) after liquid (1-11), ecosystem garbage storing hole (1-12), broken rear garbage storing hole (1-13) and dehydration, life The ecosystem garbage storing that rubbish is transported to pretreatment workshop through cram packer cheats (1-12), and cram packer side is provided with use Shear crusher (1- is transported in the portable air compressor (1-1) of cleaning vehicle, then by the first bridge grabbing crane (1-2) 3) hopper above, storing melt pit (1-13) is delivered to by belt feeder (1-4) after crushing；In material pit, rubbish experience the Two bridge grabbing cranes (1-5) turn over pile, forced ventilation, the lifting of biofermentation speed, free water content increase；After 5-10 days, Rubbish delivers to dewaterer (1-6) progress extrusion dehydration by the second bridge grabbing crane (1-5) and delivers to blanking steel storehouse (1-7), Garbage storing cheats (1-14) after delivering to dehydration by blanking steel storehouse (1-7), and the rubbish after dehydration in garbage storing hole (1-14) is grabbed by the 3rd Bucket bridge crane (1-8) delivers to belt speed governing constant feeder (1-9), and is delivered to life by pipe type conveyer (1-10) Refuse burning system is handled.

3. the system of a kind of cement kiln synergic processing urban and rural domestic refuse according to claim 1, it is characterised in that described Consumer waste incineration system (2) include three air valves (2-1), cold burden storehouse (2-2), dore furnace (2-3), Category Four cyclone cylinder (2-4), hot plate stove (2-5) and cooling blower (2-6), rubber conveyer, and three are provided with above three air valves (2-1) It is tightly connected between air valve and hot plate stove by tremie pipe, cooling blower is installed, hot plate stove is also below the hot plate stove It is connected respectively with dore furnace (2-3), Category Four cyclone cylinder (2-4), and hot plate stove to cement clinker production line to smoke-box by rising Flue is implanted into after carrying out necessary transformation to dore furnace tapering, into hot plate stove house refuse in hot plate stove after ignition Enter further incineration disposal in cement kiln through uptake flue.

4. the system of a kind of cement kiln synergic processing urban and rural domestic refuse according to claim 1, it is characterised in that described Domestic landfill leachate treatment system (3) include Anaerobic Treatment module (3-1), denitrification module (3-2), nitrification module (3- 3), cooling system module (3-4), ultrafiltration module (3-5), nanofiltration module (3-6), reverse osmosis module (3-7), percolate will Enter the leachate collection pool (1-11) of underground in a manner of gravity flow, when liquid level reaches certain altitude in collecting pit, sewage pump It will be percolated in liquid pump to Anaerobic Treatment module (3-1) regulating reservoir, and percolate processing be carried out, by denitrification module (3-2), nitre Change module (3-3), cooling system module (3-4), ultrafiltration module (3-5), nanofiltration module (3-6), reverse osmosis module (3-7) to produce afterwards Raw sludge and concentrate are directly transported to incineration disposal in cement kiln, effectively reduce the cost of disposal of secondary waste；Handle it Water circulation afterwards realizes wastewater zero discharge in process system.

5. the system of a kind of cement kiln synergic processing urban and rural domestic refuse according to claim 1, it is characterised in that described Deodoration system (4) include converge bellows (4-1), deodorization blower fan (4-2), water-bath type dust arrester (4-3), biofilter (4-4), Pre- washing basin (4-5), spoil disposal pond (4-6), spray pond (4-7), activated carbon tower (4-8) and grate-cooler cooling blower airduct (4- 9) bellows (4-1) that, converge pass through deodorization blower fan (4-2) and water-bath type dust arrester (4-3), biofilter (4-4), activated carbon tower (4-8) is sequentially connected, and pre- washing basin (4-5), spoil disposal pond (4-6), spray pond (4-7) are provided with below biofilter (4-4), The bellows (4-1) that converge also are connected by air-introduced machine with grate-cooler cooling blower airduct (4-9)；Described biofilter and spray pond Between be tightly connected by blast pipe, and be provided with the right side of biofilter blower fan and converge bellows.

6. the system of a kind of cement kiln synergic processing urban and rural domestic refuse according to claim 1, it is characterised in that described Bypass system (5) include bypass cyclone cylinder (5-1), gas cooler (5-2), dust-precipitator (5-3), the second cooling blower (5-4) and ash collecting box (5-5), the second cooling blower (5-4) by excessive potassium, sodium, chlorine body extract out, through bypass cyclone cylinder (5-1), Gas cooler (5-2), dust-precipitator (5-3) will discharge cement clinker burning system, can effectively subtract after extracting a certain amount of gas Less or the skinning of chlorine element, caking are avoided, the exhausting amount of its bypass system is by the chlorinity and cement slurry in rubbish Chlorinity determine, gas cooler (5-2), dust-precipitator (5-3) are also connected with ash collecting box (5-5).

A kind of 7. method of cement kiln synergic processing urban and rural domestic refuse, it is characterised in that its concrete technology flow process is：Ecosystem House refuse passes sequentially through plate to entering ecosystem house refuse storage hole after factory, by bridge grabbing crane and feeds machine, shearing Disintegrating machine completes just broken operation, forms 90% granularity<200mm waste particles, periodically turned over by grab bucket in house refuse storage hole Pile, the air blast of bottom blast device periodicity, percolate, which are spread, carries out biological dewatered processing 5-10d, by the life of biochemical treatment Waste particles pass sequentially through bridge grabbing crane, plate feeds machine, dewaterer is sent into the storage of finished product house refuse after carrying out mechanical dehydration Region is deposited, is had bad luck through grab bucket and is sent into finished product trash repository.

8. the method for a kind of cement kiln synergic processing urban and rural domestic refuse according to claim 7, it is characterised in that described Deodoration system life wastes pre-processing system, consumer waste incineration system, life rubbish will be come from by sealing pipeline and blower fan Rubbish percolation liquid treating system contains smelly air, and in supporting cement producing line normal operation, it is cold to be sent into cement kiln head through blower fan But dissolved by machine and disposed with wind as cement production process, be sent into professional odor removal progress purified treatment when emergent.