JPH05264021A - Continuous generating device using carbonized gas from industrial waste - Google Patents

Abstract

PURPOSE:To prevent the leakage of foul odor or smoke even from the industrial waste high in water content by a method wherein the industrial waste high in water content is dried by hot air from a hot air heat exchanger and the exhaust gases containing foul odor are introduced into a gas carbonizing furnace to undergo thermal decomposition. CONSTITUTION:The industrial waste high in water content in a drying hopper 3 is dried by sending the hot water obtained from a gas cleaning cooler 23 and by heating with the exhaust heat from a gas engine to a hot air heat exchanger 7 by a circulating pump 8 and by driving the fan to send air through the sloping holes of an air screen 5. Dry and malodorous exhaust gases are sucked by a dry air blower 20 separated from dusts by an exhaust gas cyclone separator 4 provided at the upper part of the chamber of the drying hopper and then sent to a combustion layer D inside a gas carbonizing furnace 15 to undergo thermal decomposition. In this way the leakage of foul odor and smoke from the device can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an industrial waste dry distillation gas continuous power generator.

[0002]

2. Description of the Related Art Japanese Patent Publication No. Sho 62-169919 proposes a device for continuous distillation of gas for industrial waste dry distillation gas, which is linked to an industrial waste drying unit and has a countermeasure against bad odor. It is a pollution-free device that uses an incinerator and an air decomposition device with a structure to burn with generated oxygen and rotate a turbine with a heat exchanger to generate electricity, but the structure is complicated and waste that requires low-cost treatment. It was impossible to process. In addition, as a power generation system for industrial waste
As is known from Japanese Patent Publication No. 86920, in order to rotate waste gas turbines, a waste gas treatment tank is used to generate a large amount of gas and a gas turbine generator is used to odorlessly treat the gas at a combustion temperature of 800 ° C. or higher. A large-capacity decomposition treatment tank is required to generate the required gas, which is difficult to achieve. Furthermore, regarding the drying of industrial waste
Although proposed by Japanese Patent Publication No. 50012, the present invention is to provide a heat exchanger inside a normal incinerator to generate hot water and dry it with warm air in a waste transport conveyor section. It is impossible to completely dry high-humidity waste, and there are problems such as foul odor leakage, and it is impossible to apply an industrial waste dry distillation gasifier. Further, Japanese Patent Publication No. 58-2382 proposes a method for maintaining the airtightness of a dry distillation gasification furnace and a process for injecting a separated liquid into the furnace. There is a problem in that decomposition is impeded, and therefore it is difficult to obtain a high-performance dry distillation gas, and not only tar but also a large amount of water, dust and basic substances are involved in the treatment. Regarding the deposition height of industrial waste in the carbonization gasification furnace, Japanese Examined Patent Publication No. 64-46
Although there is 575 publication, there is a problem in the durability of the thermocouple because it is exposed to the high temperature malignant gas generated in the furnace when the industrial waste is incinerated.

[0003]

[Problems to be Solved by the Invention] The nature of industrial waste is that it is mainly stored or stored outdoors and is constantly in a humid state due to wind and rain, and generally has a water content of 25 to 50% wd. Dust and offensive odor are generated when dried, so it was usually impossible to dry before treatment and treat in an incinerator. Conventionally, such high-humidity industrial waste, which is still undried, is directly put into the dry distillation gasification furnace and dried and pyrolyzed in the dry layer in the furnace. It was difficult to obtain a high-calorie dry distillation gas by containing a large amount of water and reducing the temperature of the dry distillation gas to be discharged. Although it formed and caused a cross-linking phenomenon to prevent the natural fall of industrial waste inside the carbonization gasification furnace, or formed a cavity to form a conduit and caused partial combustion to significantly inhibit the generation of carbonization gas. Continuous and dry distillation gas continuous power generation system for industrial waste that does not leak off foul odors and smoke even if it is humid and can be processed safely and cleanly, does not generate harmful secondary environmental pollutants, and is easy to handle. Was required.

[0004]

[Means for Solving Problems] Circulating high-temperature water that has been heat-absorbed by a heat exchanger or a gas engine, which is provided to condense and remove impurities of pyrolysis gas generated in a dry distillation gasification furnace,
Suction that is provided to prevent humidification of industrial waste by drying with a hot air heat exchanger and introducing an exhaust containing odor into a carbonization gasification furnace to prevent thermal decomposition and external air flowing from the waste input port. The incineration residue was transported using a blower exhaust and separated by a cyclone, and the exhaust containing smoke and odor was prevented from leaking out of the industrial waste carbonization gas continuous power generation equipment and condensed to reform the carbonization gas. Tar and cooling Dust washed and mixed with basic sewage and separated water captured by a cyclone are mixed with water neutralized by chemical injection, heated in a coil tube in the dry distillation gasification furnace wall and injected into the cooling layer in the furnace. Industrial waste dry distillation gas continuous power generator that treats contaminated water by significantly increasing the amount of heat generated by steam reaction, preventing overheating and heat loss in the furnace.

[0005]

[Operation] A water-cooled cyclone provided for condensing and removing tar and water in the dry-distilled gas produced by thermally decomposing industrial waste in the dry-distillation gasifier, and cooling water with a heat exchanger of a gas cooler or a gas engine. The hot water that has absorbed heat is changed to warm air by the hot air heat exchanger provided at the bottom of the waste drying hopper, and the humid air is used to prevent the inflow of outside air into the dry distillation gas furnace. The incineration residue is transported by using the exhaust of the air, and the exhaust containing smoke and malodor is separated by a cyclone, and is sent to the combustion layer in the carbonization gasification furnace by a carbonization air blower to treat the smoke and malodor by thermal decomposition. It promotes dry distillation gasification and continuously pyrolyzes, and the tar and contaminated water captured by the condensation removal and washing of the produced dry distillation gas and the calorific value are greatly enhanced by the water gas reaction in the dry distillation gas furnace. Performance and clean dry Continuously generated by the generator to operate the gas engine by the gas.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The industrial waste dry distillation gas continuous power generation apparatus of the present invention will be described in detail below with reference to the drawings. Fig. 1 is an overall configuration diagram of a continuous distillation gas continuous power generation system for industrial waste. It is an input port for humid organic waste such as waste plastics, paper chips, and rubber chips.
The fan is driven by the motor of the warm air heat exchanger 7 fixed to the side surface of the warm air chamber 6 under the floor, which is thrown into the drying hopper 3 constituted by the air screen 5 provided on the slope more integrally with the floor. The outside air is driven to change to warm air and is ventilated through the oblique holes of the air screen 5 to dry the retained waste in the drying hopper 3, and the dry exhaust gas containing a foul odor is separated from the exhaust gas provided in the upper part of the drying hopper 3 chamber. It is separated from dust by the cyclone 4 and sucked by the dry distillation air blower 20 and sent to the D combustion layer inside the dry distillation gasification furnace 15 for thermal decomposition treatment. When industrial waste is input, it interlocks with the inlet opening / closing switch 2. The fan of the hot air heat exchanger 7 is stopped, and at the same time, the lower part of the exhaust separation cyclone 4 is opened and the trapped dust is discharged into the drying hopper 3, so that no foul odor and smoke leak to the outside of the device. It is a structure. The staying waste dried in the drying hopper 3 is lifted and conveyed to the hopper chamber 10 by the vertical conveying screw 9 which is obliquely rotated by the screw drive motor 11 and is inclined, and at the same time, the feeding screw 12 which is driven in conjunction with the vertical conveying screw 9 is driven. The required amount of the industrial waste is put into the dry distillation gasification furnace 15 by the level switch 14 provided at the upper part of the dry distillation gasification furnace 15 so that the industrial waste is always maintained at a constant reference surface inside the dry distillation gasification furnace 15. It is a system that can Dry distillation gasification furnace 15
Since the internal pressure is always a negative pressure, the outside air flows into the furnace from the gaps such as the vertical conveying screw 9 and the screw drive motor 11 and flows into the furnace from the input screw 12 part, which significantly inhibits thermal decomposition. It is necessary to make the atmospheric pressure equal to or negative pressure inside the dry distillation gasification furnace 15, and the pressure holding blower 1 provided in the upper part of the hopper chamber 10.
The air in the hopper chamber 10 is discharged by 3 and the outside air is prevented from entering by making the pressure or negative pressure equivalent to the inside of the dry distillation gasification furnace 15. The discharge air containing odor and smoke is stored in the residue discharge screw 19. The incineration residue is pneumatically conveyed to the residue cyclone 38 by the residue conveyance ejector 37 connected to the tip portion, and the exhaust gas separated from the incineration residue is discharged into the warm air chamber 6 and circulated, so that it is discharged from the device to the outside. Prevent the leakage of smoke and odors. The industrial waste that has been put into the carbonization gasification furnace 15 is air from the drying hopper 3 that contains smoke and a bad odor from the central ventilation hole 16 which is integrated with a plurality of ventilation holes in the peripheral wall of the furnace by the carbonization air blower 20. The dry distillation gas, which was supplied to the D combustion layer and thermally decomposed the industrial waste, was discharged from the upper part of the furnace by the suction blower 22 and the water-cooled cyclone 2
When passing 1, the tar is condensed and removed by the water-cooled heat exchange coil, and the density of dry distillation gas is further reduced by the gas cleaning cooler 23, and at the same time, it is cleaned by the sprinkler to remove dust and basic substances and accelerated by the suction of the exhaust blower 25. The dry distillation gas is separated into water and water by the dehumidifying cyclone 24,
Clean dry distillation gas is continuously generated and gas engine 2
The burned gas, which is supplied to the gas generator 9 to rotate the gas engine to drive the generator 28 to generate electricity, passes through the silencer 30 and is released into the atmosphere. FIG. 2 is a detailed view of a drying device, an incineration residue treatment device, a dry distillation gas furnace and a gas purification cooling device. Inside the dry distillation gasification furnace 15, industrial waste is pyrolyzed from the upper part to the A dry layer and the B pyrolyzed layer. , C reduction layer, D combustion layer,
It is composed of E cooling layer and has a residue discharge port 18 at the bottom of the furnace.
The incineration residue after completion of the dry distillation gasification reaction is discharged by the residue discharge screw 19 to the outside of the furnace. The heat source for drying the industrial waste is the cooling coil of the water-cooled cyclone 21, the gas cleaning cooler 23, and the hot water heated by the exhaust heat of the gas engine is sent to the warm air heat exchanger 7 by the circulation pump 8 and the fan is driven to cool it by the outside air. When the pressure of the circulating water in the closed circulation system exceeds the specified pressure, the pressure reducing valve 33 installed on the upper part of the gas cleaning cooler 23 is opened and released into the atmosphere to reduce the pressure to prevent the device from being damaged. It is a structure. The tar captured and separated by the water-cooled cyclone 21 provided for reforming the dry distillation gas is discharged to the tar portion 35 of the tar water tank 26 by the lower discharge pipe.
The dry-distilled gas that has been cleaned in step 3 to remove dust and basic substances is separated into water and water by the dehumidifying cyclone 24, and the washed dust and basic substances and the separated and captured water are washed in the tar water tank 26 by the discharge pipe at the bottom. The neutralized water from the cleaning water portion 36 was replenished and mixed, which was discharged to the water portion 36, pH-adjusted by the chemical solution by the neutralizing material injection pump 34, and was sprayed again by the cleaning water circulation pump 32 by the gas cleaning cooler 23. The tar-containing neutralized water is heated by the metering pump 27 in the coil tube in the peripheral wall of the dry distillation gasification furnace 15 to become steam, which is supplied from the water tar water supply hole 17 to the E cooling layer in the lower part of the dry distillation gas furnace 15, and after combustion. The amount of heat retained by the incineration residue reacts with water gas to increase the amount of dry distillation gas generated and significantly strengthen the gas calorific value, and at the same time prevent overheating and heat loss of the residue discharge device, and prevent evaporation and water supply. Added water is configured to hold always constant water supplemented from the outside by the float valve 31.

[0007]

EFFECTS OF THE INVENTION Even in the case of humid industrial waste, the condensation removal provided for purification of the dry distillation gas produced in the dry distillation gasification furnace and the circulation of high temperature water absorbed by the gas engine are used to remove the waste before it is put into the incinerator. The odor generated by drying and the smoke generated by the transfer of the incineration residue by using the exhaust air of the suction blower to prevent the inflow of air from the charging port in the upper part of the furnace are treated by pyrolysis inside the dry distillation gasification furnace by a thermal decomposition to produce a bad odor. And the smoke was prevented from leaking out of the device. The dry waste is put into a carbonization gasification furnace to reduce the water content in the carbonization gas and to prevent cross-linking phenomenon and partial combustion due to condensation inside the furnace, and to include tar generated by condensation separation of carbonization gas and cooling and cleaning. Neutralization water was injected into the cooling layer in the dry distillation gasification furnace, and the calorific value could be greatly increased by the water gas reaction. The in-furnace deposit itself became a tar filter, which was high in calories and clean. We were able to continuously generate dry distillation gas and rotate the gas engine to generate electricity.Since the equipment does not emit any pollutants (odor, smoke, acidic polluted water) other than engine exhaust and incineration residue,
It is a continuous gas dry distillation gas power generation system that can recover harmful electric and humid waste as electric energy and as electric energy.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a waste dry distillation gas continuous power generation device according to the present invention.

FIG. 2 is a detailed view of a drying device, a residue treatment device, a dry distillation gas furnace, and a gas purification device according to the same example.

[Explanation of symbols]

 7 Warm Air Heat Exchanger 10 Hopper Chamber 12 Input Screw 15 Carbon Distillation Gasifier 17 Water Tar Water Supply Hole 20 Carbon Distillation Air Blower 21 Water Cooling Cyclone 23 Gas Wash Cooler 24 Dehumidifying Cyclone 29 Gas Engine

Claims (3)

[Claims] 1. A high-temperature water heat-absorbed by a gas purifying heat exchanger or a gas engine is circulated to dry humid industrial waste with hot air from a hot-air heat exchanger, and exhaust gas containing a foul odor is subjected to dry distillation gasification. A continuous distillation gas continuous power generation system for industrial waste characterized by being introduced into the furnace, pyrolyzed and treated. 2. Smoke and bad odor separated by a cyclone are used to convey the incineration residue by using the exhaust air of a suction blower, which is provided to prevent the air from flowing into the dry distillation gasification furnace from the waste feeding screw section. Was introduced into a dry distillation gasification furnace and treated by thermal decomposition. 3. Tar that has been condensed and separated for gas reforming is mixed with dust that has been cooled and washed and basic wastewater that has been neutralized by injecting a chemical solution, and the mixture is heated in a coil tube inside the wall of the incinerator and gasified by dry distillation. An industrial waste carbonization gas continuous power generation system characterized by being injected into the cooling layer in the furnace and significantly increasing the amount of heat generated by a water gas reaction to prevent overheating of the furnace and treat pollutants.