CN209836099U - Gas-liquid-solid waste comprehensive treatment and resource utilization system - Google Patents

Abstract

The utility model relates to a gas-liquid-solid waste comprehensive treatment and resource utilization system, which comprises a grinding device, a pulping device and a gasification device; the grinding device comprises a feeding device and a grinding machine, wherein the feeding device is fed with the carbon-containing raw material solid waste, the waste water and the waste liquid and the additive, and the carbon-containing raw material solid waste, the waste water and the waste liquid are sent to the grinding machine to be ground into slurry A, and the slurry A is sent to the pulping device; the pulping device comprises a pulping machine body, a mixed pulping intelligent guidance system and a modified tempering device, wherein the mixed pulping intelligent guidance system guides the modified tempering device to carry out tempering and ultrasonic treatment on slurry A introduced into the pulping machine body to generate slurry B; the gasification device comprises a gasification furnace, and the gasification furnace comprehensively treats the carbon-containing raw material solid waste and the waste water and waste liquid through a preposed grinding device and a pulping device to prepare slurry B which is sent into the gasification furnace to be cracked and gasified to generate usable fuel gas. The utility model provides a system for solid useless, waste liquid, waste gas integrated treatment.

Description

Gas-liquid-solid waste comprehensive treatment and resource utilization system

Technical Field

The utility model belongs to the environmental protection field, concretely relates to gas-liquid solid discarded object integrated processing and resource utilization system.

Background

Solid waste and hazardous waste of various industries in China are huge in quantity and various in types, most of the existing treatment modes adopt the traditional landfill method and the traditional incineration method, so that great waste is caused to land resources, and secondary pollution is possibly generated. In addition, the amount of sludge in municipal sewage treatment plants in China is greatly increased, the water content of the sludge is high, the sludge is difficult to be further directly utilized, the current treatment mode is mainly incineration or mixed coal combustion, and the direct combustion needs to remove a large amount of water and consume a large amount of heat energy. The oily sludge of petrochemical enterprises is huge in volume, a large amount of heavy metal salts and toxic and harmful substances which are difficult to degrade exist, and due to the limitation of the existing oily sludge treatment technical level in China, the existing treatment mode is only simple dehydration drying treatment and outward transportation stacking, so that the existing treatment mode occupies land, and causes pollution to soil, water and atmosphere to different degrees.

Various waste liquids produced and discharged in industry and production life often contain higher-concentration organic substances which can be utilized by microorganisms, the current treatment mode mainly utilizes a wastewater treatment device to treat tail liquid, standard discharge is realized, a large amount of energy is consumed while clean discharge is realized, and waste of water resources is also realized.

In addition, the amount of waste gas discharged by industry in China is large and various, at present, methods such as activated carbon adsorption, catalytic combustion/oxidation, acid-base neutralization, washing, trickling filtration and the like are mainly adopted, and although the treatment means has good effect, the cost is very high, and the treatment means has no competitiveness in the current society with optimized economic benefits. In conclusion, the conventional utilization and treatment of various wastes are liable to aggravate environmental pollution, and have the problems of large amount of wastes, difficult treatment and high cost.

The method for preventing and treating the environmental pollution of the solid wastes in China is provided: the principle of solid waste and harmless treatment of the solid waste is fully and reasonably utilized, the solid waste is treated in a centralized manner, the landfill amount is reduced to the maximum extent, and the clean production and the development of circular economy are promoted. The national thirteen-five key research and development technical support also provides key technologies for clean and efficient utilization of coal, treatment, recycling and reclamation of coal conversion wastewater, a novel technology for preparing coal water slurry from high-concentration organic wastewater and the like; the national 'clean and efficient utilization of coal action plan (2015-2020)' proposes a novel coal utilization mode of 'quality grading, energy combination and integrated co-production', promotes the coupled development between coal chemical industry and industries such as power generation, oil and gas chemical industry, steel, building materials and the like in regions with conditions, realizes the cyclic utilization of substances and the gradient utilization of energy, and reduces the production cost, the resource consumption and the pollution emission.

Therefore, how to effectively, cleanly and inexpensively dispose and efficiently utilize the waste gas, solid and liquid wastes generated in the production life in a recycling manner is a problem and a challenge which needs to be solved urgently in the economic and social development of China. The method integrates solid waste, hazardous waste, waste liquid and waste gas for unified treatment and disposal, realizes reduction, recycling and harmless disposal, can save the cost of separate treatment, saves energy and reduces emission, can mutually utilize effective components in various industrial wastes, saves treatment energy consumption, and is the development trend of current comprehensive utilization of wastes.

Disclosure of Invention

The utility model overcomes prior art's is not enough, provides a system of solid useless, waste liquid, waste gas integrated processing, and the active ingredient in various discarded objects can utilize mutually, reduces and handles energy consumption and cost, can effectively improve useless solid, waste liquid and waste gas utilization ratio, realizes that the discarded object subtracts quantization, innoxious, resource utilization, realizes the energy branch matter utilization system after the discarded object resourceization.

In order to solve the technical problem, a gas-liquid-solid waste comprehensive treatment and resource utilization system is characterized in that: comprises a grinding device, a pulping device and a gasification device;

the grinding device comprises a feeding device and a grinding machine, wherein the feeding device is fed with the carbon-containing raw material solid waste, the waste water and the waste liquid and the additive, and the carbon-containing raw material solid waste, the waste water and the waste liquid are sent to the grinding machine to be ground into slurry A, and the slurry A is sent to the pulping device;

the pulping device comprises a pulping machine body, a mixed pulping intelligent guidance system and a modified tempering device, wherein the mixed pulping intelligent guidance system guides the modified tempering device to carry out tempering and ultrasonic treatment on slurry A introduced into the pulping machine body to generate slurry B;

the gasification device comprises a gasification furnace, and the gasification furnace comprehensively treats the carbon-containing raw material solid waste and the waste water and waste liquid through a preposed grinding device and a pulping device to prepare slurry B which is sent into the gasification furnace to be cracked and gasified to generate usable fuel gas.

Furthermore, the feeding device is provided with an intelligent additive feeding system, the intelligent additive feeding system regulates and controls the added additives through an intelligent mixed pulping guidance system, and the intelligent mixed pulping guidance system identifies and judges the slurry A introduced into the pulping machine body and matches the components and the quantity of the additives added into the feeding system by the intelligent additive feeding system.

Further, the modified modifying and tempering device is provided with a slurry tempering agent to condition slurry A of the pulping machine body so as to hydrolyze organic matters and reduce hydrophilic groups, and the conditioned liquid is subjected to ultrasonic treatment;

the mixed pulping intelligent guidance system carries out linkage regulation and control on the modified tempering device and the additive intelligent feeding system, and a pulping machine body generates a homogeneous liquid B with the pulp concentration at least reaching 60%.

Further, 5% -20 w.t% of CaO powder is selected as the slurry conditioning agent;

or the ultrasonic treatment is carried out at the frequency of 15-25 kHz, the power of 150-250W and the specific energy of 30-40 kJ/g DS.

Further, the carbon-containing raw material solid waste comprises one or more of coal, biomass, petroleum coke, blue carbon, sludge, oil sand and waste activated carbon;

or the carbon-containing raw material solid waste is mixed with sludge, and the mixing proportion of the sludge is 10-15%;

or the waste water and the waste liquid sent into the feeding device are subjected to alkali-removing and tempering pretreatment by a tempering device;

alternatively, the additives fed into the dosing device include dispersants and stabilizers.

Further, the outlet of the pulping machine body is communicated with a storage tank, and the storage tank is communicated with a slurry pump conveying device to convey the slurry B into the gasification furnace;

or, the storage tank is provided with a slurry treatment system in front, and the slurry treatment system screens out the particle impurities in the slurry B.

Furthermore, the intelligent mixed pulping guidance system is provided with a detection element, a transmission line, a control unit, a storage unit and a calculation unit, wherein the detection element is used for detecting the components and the weight of the carbon-containing raw material solid waste and the wastewater and waste liquid in the feeding device, the detected information is transmitted to the control unit through the transmission line, the control unit is communicated with the storage unit through the transmission line for data proportioning, the components and the proportion of the additive are calculated through the calculation unit, and the control unit is used for controlling the intelligent additive feeding system to add the components and the proportion of the additive calculated by the calculation unit;

the detecting element detects the components of the slurry A in the pulping machine body, the detected information is transmitted to the control unit through the transmission line, the control unit is communicated with the storage unit through the transmission line and performs data proportioning, the components and the weight of the slurry modifying and tempering agent required by the pulping machine body are calculated through the calculating unit and ultrasonic treatment is performed, and the control unit controls the modifying and tempering device through the transmission line to modify and modulate the slurry.

Further, a storage unit in the intelligent mixed pulping guidance system stores preset components and weight of the carbon-containing raw material solid waste and the waste water and liquid waste and corresponding components and proportion of the additive, and preset components, weight and ultrasonic treatment of the slurry A and corresponding components, weight and ultrasonic treatment of the slurry conditioner.

Furthermore, a high-temperature pressurized gasification furnace is selected as the gasification furnace, and organic pollutants are gasified and decomposed in the high-temperature gasification process of the gasification furnace to generate usable fuel gas;

or the gasification furnace is provided with a gasification furnace feeding structure, the gasification furnace feeding structure is arranged on the gasification furnace, a slurry fuel feeding port, a solid feeding port and a waste gas feeding port are sequentially arranged from top to bottom, the uniformity of a flow field in the gasification furnace is facilitated, and the solid feeding port feeds waste activated carbon and hazardous wastes;

or the outer wall of the gasification furnace is provided with an annular channel along the periphery of the furnace, and the annular channel is provided with a plurality of gasification agent feed inlets which are introduced into the gasification furnace;

or the gasification agent feed inlets are uniformly distributed on the annular channel;

or 4-8 gasification agent feed inlets are uniformly distributed and enter the gasification furnace to participate in gasification in a pressure-equalizing and homogenizing manner.

Further, a slag discharge port is arranged at the lower end of the gasification furnace, the lower end of the slag discharge port is connected with a lock hopper, the lower end of the lock hopper is introduced into a liquid slag discharge device, the liquid slag discharge device comprises a cold water tank and a heat exchanger arranged in the cold water tank, liquid high-temperature ash slag discharged from the slag discharge port falls into the cold water tank through the lock hopper, is subjected to water bath quenching, is condensed into beaded solid small slag particles after being cooled, and is recycled;

or the heat exchanger is a tube-shell heat exchanger, the refrigerant is introduced into the tube shell, and the refrigerant is introduced into the cold water tank after exchanging heat with hot water outside the tube shell.

Compare with present separately handling, low order utilization technique, the beneficial effects of the utility model include:

firstly, a comprehensive treatment and disposal, gradient resource utilization process and a device thereof for various carbon-containing raw materials and solid wastes, sludge, industrial waste gas and waste water and liquid in various industries are provided, so that the utilization rate of low-order energy can be effectively improved, and the quality-based graded utilization of the energy can be realized;

second, the utility model provides a pair of gas-liquid-solid waste comprehensive treatment resource utilization process and device, material and product all have the source to have the department of going: the prepared slurry fuel can be sent into a boiler to be directly combusted to generate steam for heating and power generation, and can also be sent into a gasification furnace to be gasified; the synthesis gas generated by gasification can be sent to a boiler for direct combustion, heat supply and power generation, and can also be sent to a waste heat boiler for heat recovery to be used as a chemical raw material; the gasification residue can be returned to the pulping system for recycling, and can also be used as a cement building raw material for comprehensive utilization; the whole system can select a proper utilization way according to local conditions and realize resource utilization;

thirdly, the gas-liquid-solid waste comprehensive treatment resource utilization process and the device thereof can comprehensively treat the waste activated carbon, the industrial waste gas and the waste water and waste liquid which are difficult to treat, thereby not only saving the high cost of separate treatment, but also saving a large amount of water resources, and meeting the requirement of green circular economy development;

the slurry fuel prepared by the pulping system can be stored, transported in a long distance, combusted and gasified like oil, the combustion and gasification efficiency is over 98 percent, the SOx and NOx emission of the slurry fuel during combustion can be reduced by modifying, tempering and processing the slurry fuel, and the slurry fuel is an ideal low-pollution fuel and gasification raw material;

an intelligent additive feeding system is provided, and a novel efficient compound additive with strong toxicity resistance and wide adaptability can be preferably prepared by interlocking with the intelligent mixed pulping guidance system, so that the stability and the pulping concentration of the slurry fuel are improved;

and sixthly, providing a mixed pulping intelligent guidance system, optimizing the proportioning and improving the pulping performance through the prediction research on the slurry prepared by mixing various carbon-containing solid raw materials, solid waste and waste water and waste liquid, and obtaining the high-concentration stable and homogeneous slurry fuel, wherein the pulping concentration is more than 60%. Meanwhile, through reasonable configuration, the sulfur content in the slurry fuel can be reduced, the ash melting point is improved, the ash component is optimized, and the pollution and slagging characteristics are reduced.

Drawings

FIG. 1 is a flow chart of the present embodiment;

FIG. 2 is a schematic structural view of a gasification furnace according to the present embodiment;

the reference numbers in the figures are: 1, a feeding device; 2, a tempering device; 3, grinding; 4 pulping machine body; 5, modifying and tempering the device; 6, an intelligent additive feeding system; 7, a mixed pulping intelligent guidance system; 8, a slurry processing system and 9 a slurry storage tank; 10 slurry pump delivery systems; 11 gasification furnace; a slurry fuel feed port 1101; a solid waste feed inlet 1102; an exhaust gas inlet 1103; a gasification agent feed port 1104; an air outlet 1106; a lock hopper 1107; a cold water tank 1108; a heat exchanger 1109; a slag discharge port 1110; 12 liquid slag discharging device; 13 a gas purification system; 14, a boiler; 15, a waste heat boiler; 16 flue gas treatment system.

Detailed Description

The invention will be further explained with reference to the following drawings and examples:

example 1

As shown in FIGS. 1-2, the utility model discloses a gas-liquid-solid waste comprehensive treatment and resource utilization system, which comprises a grinding device, a pulping device and a gasification device.

The grinding device comprises a feeding device 1 and a grinding machine 3, wherein the feeding device 1 is fed with carbon-containing raw material solid waste, waste water and waste liquid and additives and sends the carbon-containing raw material solid waste, waste water and waste liquid and additives to the grinding machine 3 to be ground into slurry A, and the slurry A is sent to the pulping device;

the pulping device comprises a pulping machine body 4, a mixed pulping intelligent guidance system 7 and a modified tempering device 5, wherein the mixed pulping intelligent guidance system 7 guides the modified tempering device 5 to carry out tempering treatment and ultrasonic treatment on slurry A introduced into the pulping machine body 4 to generate slurry B;

the gasification device comprises a gasification furnace 11, wherein the gasification furnace 11 comprehensively processes the carbonaceous raw material solid waste and the waste water and waste liquid into slurry B through a preposed grinding device and a pulping device, and the slurry B is sent into the gasification furnace 11 for pyrolysis and gasification to generate usable fuel gas.

The system is used for pulping the liquid-solid waste, comprehensively treating the waste water and the carbon-containing raw material solid waste, and sending the waste water and the carbon-containing raw material solid waste into the gasification furnace together with the waste gas, so that the comprehensive treatment of the waste water, the waste gas and the solid waste is realized, the problems of energy waste and low energy utilization rate caused by the separate treatment of various waste at present are solved, the energy utilization rate is effectively improved, and the comprehensive treatment capacity of various waste is realized.

The feeding device 1 is provided with an intelligent additive feeding system 6, the intelligent additive feeding system 6 regulates and controls the added additives through an intelligent mixed pulping guidance system 7, and the intelligent mixed pulping guidance system 7 identifies and judges the slurry A introduced into the pulping machine body 4 and matches the components and the quantity of the additives added into the feeding system 1 by the intelligent additive feeding system 6.

The modified modifying and tempering device 5 is provided with a slurry modifying and tempering agent to condition the slurry A of the pulping machine body 4 so as to hydrolyze organic matters and reduce hydrophilic groups, and the conditioned liquid is subjected to ultrasonic treatment;

the mixed pulping intelligent guidance system 7 carries out linkage regulation and control on the modified tempering device 5 and the additive intelligent feeding system 6, and generates homogeneous liquid B with the pulp concentration at least reaching 60% through the pulping machine body 4.

The intelligent additive feeding system 6 is interlocked with the intelligent mixed pulping guidance system 7, and the additive is a novel efficient compound additive based on toxicity resistance and strong adaptability, contains a dispersant and a stabilizer, and is sequentially added into the pulping system in different amounts. According to the proportion of the type and the quantity of fed materials, different types and different quantities of dispersing agents and stabilizing agents are added, and the type and the quantity of the additives are adjusted through the identification and judgment of a mixed pulping intelligent guidance system until the materials are matched into slurry fuel with the concentration and the viscosity reaching the optimal state at the same time.

The slurry modifying agent is 5-20 w.t% of CaO powder; the ultrasonic treatment is carried out by selecting the frequency of ultrasonic waves to be 15-25 kHz, the power to be 150-250W and the specific energy of the ultrasonic waves to be 30-40 kJ/g DS.

The slurry A is firstly conditioned by a slurry conditioner, so that the hydrolysis of organic matters of the solid waste flocs can be promoted, and indissolvable organic matters are converted into soluble matters; meanwhile, the addition of the slurry modifying agent can reduce hydrophilic groups on the surface of the solid waste, thereby reducing the apparent viscosity of the slurry fuel, improving the fixed viscosity concentration and being beneficial to the slurrying of the solid waste; in addition, the addition of the slurry modifying agent can also play a role in sulfur fixation and denitrification, and reduce NOx and SO in the combustion process of the slurry fuel₂And (4) discharging.

The slurry conditioner can be matched and optimized through a mixed pulping intelligent guidance system, and the optimal slurry conditioner concentration is matched according to different pulping raw materials.

The slurry modifying agent is 5-20 w.t% of CaO powder or other substances with similar effects.

The slurry fuel is conditioned by the slurry conditioner and then subjected to ultrasonic-assisted treatment, the treated slurry has small solid granularity and homogenized particles, indissolvable organic matters are degraded into soluble micromolecular organic matters, meanwhile, cell tissues of solid waste are destroyed, bound water, namely cell water, is released, the content of the total bound water is reduced, the viscosity of the slurry fuel is reduced, the concentration is increased, the solid waste is treated on a larger scale, and better economic and environmental benefits are obtained.

Based on the comprehensive consideration of effect and cost, the frequency of the ultrasonic wave can be selected from 15-25 kHz, the power can be selected from 150-250W, and the specific energy of the ultrasonic wave is 30-40 kJ/g DS.

The ultrasonic treatment can effectively improve the concentration of the slurry. The frequency of the ultrasonic wave can be selected from 15-25 kHz, the power can be selected from 150-250W, the specific energy of the ultrasonic wave is 30-40 kJ/g DS, the concentration of the slurry fuel can be effectively improved by the ultrasonic wave within the range, for example, after the ultrasonic wave treatment of 190W and 75kJ/g DS, the viscosity of the sludge coal water slurry is reduced by 41.20%, namely, the slurry forming concentration is improved.

In the structure, the carbon-containing raw material solid waste sent into the feeding device 1 comprises one or more of coal, biomass, petroleum coke, blue carbon, sludge, oil sand and waste activated carbon, the carbon-containing raw material solid waste is mixed with the sludge, the mixing proportion of the sludge is 10% -15%, the mixed sludge can strengthen the pseudoplastic fluid characteristics of slurry, enhance the thixotropy and improve the slurry concentration and stability.

In the system, the waste water and waste liquid sent into the feeding device 1 are subjected to alkali-removing tempering pretreatment by a tempering device 2.

The tempering device 2 is used for tempering the complex waste water and waste liquid by adding a liquid tempering agent, so that the complex waste water and waste liquid meet the pulping condition and optimize pulping, and the complex waste water and waste liquid possibly contains a large amount of alkaline substances such as sodium, the alkaline substances have a promoting effect on ignition and combustion of slurry fuel, but the ash melting point of the slurry fuel is reduced due to the increase of the sodium content, and the tendency of polluting and slagging is increased. By adding the liquid modifying agent, alkaline substances can be properly removed, and slagging is prevented.

The additives fed into the feeding device 1 include dispersants and stabilizers.

The outlet of the pulping machine body 4 is communicated with a storage tank 9, the storage tank 9 is communicated with a pulp pump conveying device 10 to send the pulp B into the gasification furnace, the storage tank 9 can be flexibly arranged, the grinding device and the pulping device are separately arranged with the gasification furnace, and the system is flexibly installed and used.

Leading slurry processing system 8 of storage tank 9, particle impurity in the slurry B is selected out to slurry processing system 8.

The intelligent mixed pulping guidance system 7 is provided with a detection element, a transmission line, a control unit, a storage unit and a calculation unit, wherein the detection element is used for detecting the components and the weight of the carbon-containing raw material solid waste and the wastewater and waste liquid in the feeding device 1, the detected information is transmitted to the control unit through the transmission line, the control unit is communicated with the storage unit through the transmission line for data proportioning, the components and the proportion of the additive are calculated through the calculation unit, and the control unit is used for controlling the intelligent additive feeding system 6 to add the components and the proportion of the additive calculated by the calculation unit;

the detecting element detects the components of the slurry A in the pulping machine body, the detected information is transmitted to the control unit through the transmission line, the control unit is communicated with the storage unit through the transmission line and performs data proportioning, the components and the weight of the slurry modifying and tempering agent required by the pulping machine body and ultrasonic treatment are calculated through the calculating unit, and the control unit controls the modifying and tempering device 5 through the transmission line to modify and modulate the slurry.

The mixed pulping intelligent guidance system 7 is a mathematical model of a BP neural network for predicting pulping capacity, optimizes the basic rule of proportioning and improving pulping performance through the prediction research of preparing pulp by using various carbon-containing solid raw materials, and obtains high-concentration stable and homogeneous pulp fuel. The qualified pulp is obtained when the pulp concentration is more than 60%. The mixed pulping intelligent guidance system 7 can optimize slurry fuel, and through a coal blending method, the material types which are difficult to pulp and the material types with good pulping performance are mixed, so that the pulping performance of the mixed material can be effectively improved; the reasonable configuration can ensure that the pulp forming concentration of the mixed material is higher than that of any participated independent material; the thick and thin particles of the material can be matched with the pulp to increase the pulp concentration by more than 1-2%; meanwhile, through reasonable configuration, the sulfur content in the slurry fuel can be reduced, the ash melting point is improved, the ash component is optimized, and the melting property and the fouling and slagging property of the ash are reduced.

The storage unit 74 in the intelligent guidance system 7 for mixed pulping stores proportions including preset numerical values of components and weight of carbon-containing raw material solid waste and wastewater and waste liquid, corresponding components and proportions of corresponding additives, and preset numerical values of components, weight and ultrasonic treatment of slurry A and corresponding slurry conditioner.

The gasification furnace 11 is a high-temperature pressurized gasification furnace, and the gasification furnace 11 gasifies and decomposes organic pollutants in a high-temperature gasification process to generate usable fuel gas;

the gasification furnace 11 is provided with a gasification furnace feeding structure, the gasification furnace feeding structure is arranged on the gasification furnace, a slurry fuel feeding hole 1101, a solid feeding hole 1102 and a waste gas feeding hole 1103 are sequentially arranged from top to bottom, the slurry fuel feeding hole 1101 is arranged at the upper end of the solid feeding hole 1102, slurry fuel is fed into the gasification furnace and then is scattered by solid fed by the solid feeding hole 1102 at the lower end, so that the slurry fuel is gasified more fully, industrial waste gas fed by the waste gas feeding hole 1103 is dispersed and gasified by the slurry fuel and the solid fuel, the uniformity of a flow field in the gasification furnace is facilitated, the gasification efficiency is improved, and waste activated carbon and hazardous waste are fed into the;

the gasification furnace 11 is provided with an annular channel 1005 on the outer wall along the furnace periphery, and the annular channel 1105 is provided with a plurality of gasification agent feed ports 1104 led into the gasification furnace;

the gasification agent feed ports 1104 are uniformly distributed on the annular channel 1105;

4-8 gasification agent feed inlets are uniformly distributed, so that the gasification agent is uniformly pressurized and homogenized and enters the gasification furnace to participate in gasification.

The lower end of the gasification furnace 11 is provided with a slag discharge port 1110, the lower end of the slag discharge port 1110 is connected with a lock hopper 1107, the lower end of the lock hopper 1107 is introduced into a slag tapping device 12, the slag tapping device 12 comprises a cold water tank 1108 and a heat exchanger 1109 arranged in the cold water tank 1108, liquid high-temperature ash slag discharged from the slag discharge port 1110 falls into the cold water tank 1108 through the lock hopper 1107 for water bath quenching, and is condensed into beaded solid small slag particles for recycling after cooling;

the heat exchanger adopts a tube shell heat exchanger, a refrigerant is introduced into the tube shell, and the refrigerant and hot water outside the tube shell exchange heat and then are introduced into a cold water tank.

The high-temperature pressurized gasification furnace selected in the system has the temperature of about 1500 ℃ and the pressure of more than or equal to 0.3Mpa, and is provided with a plurality of inlets and outlets according to different height positions, wherein the gasification furnace comprises a slurry fuel feed port 1101, a solid waste feed port 1102, a waste gas feed port 1103, a gasification agent feed port 1104 and an air outlet 1106; the bottom of the gasification furnace is provided with a liquid slag discharging device 12 which comprises a lock hopper 1107, a cold water tank 1108 and a heat exchanger 1109.

The slurry fuel sent by the slurry pump conveying device enters the gasification furnace through a slurry fuel feeding hole 1101 to be gasified at high temperature; industrial waste gas enters the gasification furnace through a waste gas inlet 1103 to be mixed with slurry fuel for high-temperature gasification; waste activated carbon and other solid wastes enter the gasification furnace through the solid waste feed inlet 1102 to be mixed with slurry fuel for high-temperature gasification; the generated high-temperature synthetic gas (1100 ℃) is discharged through a gas outlet 1106, enters a gas purification system 13 for purification firstly, and is divided into two paths, one path of synthetic gas enters a waste heat boiler 15 for heat exchange and cooling, and the cooled synthetic gas (100 ℃) can be used as a chemical raw material for comprehensive utilization; the other path of high-temperature synthesis gas can be sent into the boiler 14 to be directly combusted to generate high-temperature high-pressure steam for power generation, heat supply or sale, and tail flue gas can be subjected to desulfurization, denitrification and dedusting treatment to achieve ultralow emission.

The gasifying agent selected by the system is water vapor, air (or oxygen) or a mixture of the water vapor and the air.

The boiler 14 can be a pulverized coal furnace, an oil-fired boiler, a gas furnace, a coal-water slurry boiler or a fluidized bed boiler; the boiler can be an existing boiler or a newly built boiler; on the basis of the original burner of the boiler, a special burner for slurry fuel and a special burner for synthetic gas are added, so that the special burner for slurry fuel, synthetic gas and industrial waste gas can be used.

The boiler is easy to slag and parts such as a combustor can be sprayed with a slag-proof anticorrosive material to prevent slag bonding.

The high-temperature high-pressure steam generated by the waste heat boiler 15 can be used as a gasification agent required by gasification of the gasification furnace, and the redundant steam can supply heat, generate power or be sold for sale.

The industrial waste gas can enter a gasification furnace to participate in gasification, and also can enter a boiler to be directly combusted, and the tail gas of the boiler are jointly treated.

The slurry fuel conveyed by the slurry pump conveying device 10 can be divided into two paths, one path of slurry fuel enters the gasification furnace 11 for high-temperature gasification, the other path of slurry fuel can enter the boiler 14 for direct combustion to generate steam for power generation and heat supply, and the tail gas and the boiler tail gas are jointly conveyed into the flue gas treatment system 16 for unified treatment, so that ultralow emission is realized.

The liquid slag discharging device 12 is a device for gasifying slurry fuel and gas fuel at high temperature in the gasification furnace 11, the generated slag is in a liquid molten state, the liquid high-temperature slag falls into the cold water tank 1108 through the lock hopper 1107, is quenched in a water bath, is condensed into small solid slag particles in bead shape after being cooled, and is recycled for comprehensive utilization. The liquid high-temperature ash slag is quenched from 1500 ℃ to about 50 ℃, and the released heat is absorbed by cold water in a cold water tank to be changed into hot water (industrial water).

The heat exchanger 1109 is arranged in the cold water tank 1108, a serpentine coil is selected as the heat exchanger, cold water is led in the heat exchanger and exchanges heat with hot water in the cold water tank outside the heat exchanger, the temperature is raised to be hot water, the hot water is sent into a water supply pipeline of the waste heat boiler 14 to be used as a cooling medium, heat in high-temperature synthesis gas is absorbed, high-temperature and high-pressure steam is generated, and therefore the water supplement amount of the waste heat boiler is reduced, and cyclic economy utilization is achieved. The residue produced by the gasification system can be returned to the mill to be mixed with solid waste materials for pulping according to the field conditions, and can also be sold for comprehensive utilization as the raw material of cement building materials.

The gasification equivalent ratio in the gasification furnace 11 is 0.2 to 0.3.

The utility model provides a gas-liquid-solid waste comprehensive treatment and resource utilization system operation flow as follows: the method comprises the following steps of firstly, roughly screening carbon-containing raw materials, industrial waste gas and various complex waste liquids from various sources, including coal, biomass, petroleum coke, blue carbon, sludge, oil sand, waste activated carbon, industrial waste gas, waste water and waste liquid, wherein the carbon-containing raw material solid waste is sent into a grinding machine 3 for grinding through a feeding device 1, the waste water and waste liquid enters a conditioning device 2 for conditioning pretreatment after component analysis, and the treated liquid is sent into the grinding machine 3 through the feeding device 1 to be mixed and ground with solid materials; the dispersing agent and the stabilizing agent are fed into a feeding device 1 through an intelligent additive feeding system 6 and enter a mill 3 together with solid waste and tempered waste water and liquid; the coarse pulp B discharged by the pulping system 4 can be optimally configured by a mixed pulping intelligent guidance system 7, then is subjected to screening, filtering, stirring and mixing by a pulp treatment system 8, and is sent into a pulp storage tank 9 for storage, and then is sent by a pulp pump conveying device 10, and can be divided into two routes according to the field conditions, wherein firstly, the coarse pulp B is sent into a gasification furnace for high-temperature gasification, and the generated synthesis gas is sent into a boiler for direct combustion or is sent into a waste heat boiler for comprehensive utilization of recovered heat; secondly, the high-temperature synthesis gas is sent into a boiler to be directly combusted to generate steam for heating and power generation.

Different with the solitary slurrying of conventionality and gasification equipment, the utility model discloses a mix to multiple different kind complicated solid waste and waste liquid and carry out the slurrying, additive and middle processing procedure are numerous and diverse, process flow end to end interlocking, can realize comprehensive treatment, resource utilization, circular economy.

Finally, it should be noted that the above-mentioned embodiments are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.

Claims (9)

1. A gas-liquid-solid waste comprehensive treatment and resource utilization system is characterized in that: comprises a grinding device, a pulping device and a gasification device;

the grinding device comprises a feeding device and a grinding machine, wherein the feeding device is fed with the carbon-containing raw material solid waste, the waste water and the waste liquid and the additive, and the carbon-containing raw material solid waste, the waste water and the waste liquid are sent to the grinding machine to be ground into slurry A, and the slurry A is sent to the pulping device;

the pulping device comprises a pulping machine body, a mixed pulping intelligent guidance system and a modified tempering device, wherein the mixed pulping intelligent guidance system guides the modified tempering device to carry out tempering and ultrasonic treatment on slurry A introduced into the pulping machine body to generate slurry B;

the gasification device comprises a gasification furnace, and the gasification furnace comprehensively treats the carbon-containing raw material solid waste and the waste water and waste liquid through a preposed grinding device and a pulping device to prepare slurry B which is sent into the gasification furnace to be cracked and gasified to generate usable fuel gas.

2. The gas-liquid-solid waste comprehensive treatment and resource utilization system as claimed in claim 1, wherein: the feeding device is provided with an intelligent additive feeding system, the intelligent additive feeding system regulates and controls the added additives through an intelligent mixed pulping guidance system, and the intelligent mixed pulping guidance system identifies and judges the slurry A introduced into the pulping machine body and matches the components and the quantity of the additives added into the feeding system by the intelligent additive feeding system.

3. The gas-liquid-solid waste comprehensive treatment and resource utilization system as claimed in claim 2, wherein: the modified modifying and tempering device is provided with a slurry modifying and tempering agent to modify slurry A of the pulping machine body so as to hydrolyze organic matters and reduce hydrophilic groups, and the modified liquid is subjected to ultrasonic treatment;

the mixed pulping intelligent guidance system carries out linkage regulation and control on the modified tempering device and the additive intelligent feeding system, and a pulping machine body generates a homogeneous liquid B with the pulp concentration at least reaching 60%.

4. The gas-liquid-solid waste comprehensive treatment and resource utilization system as claimed in claim 3, wherein: the slurry modifying agent is 5-20 w.t% of CaO powder;

or the ultrasonic treatment is carried out at the frequency of 15-25 kHz, the power of 150-250W and the specific energy of 30-40 kJ/g DS.

5. The gas-liquid-solid waste comprehensive treatment and resource utilization system as claimed in any one of claims 1 to 4, wherein: the outlet of the pulping machine body is communicated with a storage tank, and the storage tank is communicated with a slurry pump conveying device to convey slurry B into a gasification furnace;

or, the storage tank is provided with a slurry treatment system in front, and the slurry treatment system screens out the particle impurities in the slurry B.

6. The gas-liquid-solid waste comprehensive treatment and resource utilization system as claimed in any one of claims 1 to 4, wherein: the intelligent mixed pulping guidance system is provided with a detection element, a transmission line, a control unit, a storage unit and a calculation unit, wherein the detection element detects the components and the weight of the solid waste of the carbonaceous raw material and the waste water and the waste liquid in the feeding device, the detected information is transmitted to the control unit through the transmission line, the control unit is communicated with the storage unit through the transmission line to carry out data proportioning, the components and the proportion of the additive are calculated through the calculation unit, and the components and the proportion of the additive calculated by the calculation unit are added into the intelligent additive feeding system through the control unit;

the detecting element detects the components of the slurry A in the pulping machine body, the detected information is transmitted to the control unit through the transmission line, the control unit is communicated with the storage unit through the transmission line and performs data proportioning, the components and the weight of the slurry modifying and tempering agent required by the pulping machine body are calculated through the calculating unit and ultrasonic treatment is performed, and the control unit controls the modifying and tempering device through the transmission line to modify and modulate the slurry.

7. The gas-liquid-solid waste comprehensive treatment and resource utilization system of claim 6, wherein: the storage unit in the intelligent mixed pulping guidance system is preset with the components and the weight of the carbon-containing raw material solid waste and the waste water and liquid waste and the components and the proportion of corresponding additives, and the components, the weight and the ultrasonic treatment of the slurry A and the corresponding slurry conditioner.

8. The gas-liquid-solid waste comprehensive treatment and resource utilization system as claimed in any one of claims 1 to 4 and 7, wherein: the gasification furnace is a high-temperature pressurized gasification furnace, and the gasification furnace gasifies and decomposes organic pollutants in the high-temperature gasification process to generate usable fuel gas;

or the gasification furnace is provided with a gasification furnace feeding structure, the gasification furnace feeding structure is arranged on the gasification furnace, a slurry fuel feeding port, a solid feeding port and a waste gas feeding port are sequentially arranged from top to bottom, the uniformity of a flow field in the gasification furnace is facilitated, and the solid feeding port feeds waste activated carbon and hazardous wastes;

or the outer wall of the gasification furnace is provided with an annular channel along the periphery of the furnace, and the annular channel is provided with a plurality of gasification agent feed inlets which are introduced into the gasification furnace;

or the gasification agent feed inlets are uniformly distributed on the annular channel;

or 4-8 gasification agent feed inlets are uniformly distributed and enter the gasification furnace to participate in gasification in a pressure-equalizing and homogenizing manner.

9. The gas-liquid-solid waste comprehensive treatment and resource utilization system of claim 8, wherein: the lower end of the gasification furnace is provided with a slag discharge port, the lower end of the slag discharge port is connected with a lock hopper, the lower end of the lock hopper is introduced into a liquid slag discharge device, the liquid slag discharge device comprises a cold water tank and a heat exchanger arranged in the cold water tank, liquid high-temperature ash slag discharged from the slag discharge port falls into the cold water tank through the lock hopper, is subjected to water bath shock cooling, is condensed into bead-shaped solid small slag particles after being cooled, and is recycled;

or the heat exchanger is a tube-shell heat exchanger, the refrigerant is introduced into the tube shell, and the refrigerant is introduced into the cold water tank after exchanging heat with hot water outside the tube shell.