CN219194881U - Carbon oil-electricity poly-generation system integrating tire pyrolysis and garbage incineration - Google Patents

Abstract

The utility model relates to a carbon oil-electricity poly-generation system integrating tire pyrolysis and garbage incineration. The system mainly comprises a garbage incineration boiler, a steam cycle generator set, a flue gas purification process, a tire pyrolysis process and coupling of incineration and pyrolysis processes. The steam cycle generator set comprises a generator, a condenser, a condensate pump, a low-pressure heater, a deaerator, a water supply pump and a high-pressure heater; the flue gas purification process comprises a desulfurization and denitrification device, a dust remover and a smoke exhaust chimney; the tyre pyrolysis process comprises a pyrolysis reactor, a pyrolysis product separator and a pyrolysis product cooler; part of the high-temperature flue gas generated by the garbage incineration is extracted to be used as a heat source for the pyrolysis of the tires, and the synthesis gas generated by the pyrolysis can be sent into a hearth of the garbage incineration boiler for combustion. The heat value of the tire is higher, valuable hydrocarbon is recovered through pyrolysis, the system can improve the efficiency of garbage power generation, and simultaneously carbon-oil co-production can be realized.

Description

Carbon oil-electricity poly-generation system integrating tire pyrolysis and garbage incineration

Technical Field

The utility model belongs to the technical field of pyrolysis and garbage power generation, and particularly relates to a carbon oil-electricity poly-generation system integrating tire pyrolysis and garbage incineration.

Background

The growing number of scrap tires has become a global issue with production rates increasing at high rates of 8% -10% per year. The main component of the waste tyre is rubber, and the generated waste rubber product accounts for about 70% of the total amount of the whole waste rubber product. Conventional disposal techniques for waste tires, such as landfill, incineration, etc., have various drawbacks including occupying public land resources, polluting the environment and being liable to cause fire, etc., and have been prohibited in some developed countries. The current relatively environment-friendly treatment modes mainly comprise thermal cracking of high-value products, crushing and grinding of rubber powder, regeneration of rubber, renewing and recycling and the like. However, recycling only prolongs the service life of rubber, and cannot solve the problem of black pollution from the source, and secondary pollution is serious and energy consumption is high in the retreading and regenerating process. Compared with the prior art, the recycling and harmless treatment of the waste tires are realized through the pyrolysis process, the energy recovery efficiency is up to 70%, and the method is an ideal disposal mode. Pyrolysis is a process of utilizing the thermal instability of organic matter in solid waste, which is placed in a pyrolysis reactor to decompose by heat, and can be converted into fuel oil, natural gas and solid fuel.

Meanwhile, "garbage surrounding cities" are increasingly serious, and incineration is considered as an effective way of disposing household garbage. The incineration method is a high-temperature heat treatment technology, namely, a certain amount of excess air and the treated organic waste are subjected to oxidation combustion reaction in an incinerator, and harmful and toxic substances in the waste are oxidized and pyrolyzed at a high temperature of 800-1200 ℃ to be destroyed, so that the incineration method is a treatment technology capable of realizing harmless, decrement and recycling of the waste at the same time. The purpose of incineration is to incinerate waste as much as possible, make the incinerated substances harmless and reduce the volume to the maximum extent, and reduce the generation of new pollutants as much as possible, thereby avoiding secondary pollution. For large and medium waste incineration plants, the waste reduction, complete incineration of toxic substances in the waste and recycling of waste heat generated by incineration can be realized simultaneously.

Under the current situation that China is experiencing the mixed energy age for a long time, the dominant position of the traditional fossil energy is still unchanged, but the proportion of new energy power in the power supply structure layout is gradually increased. Pyrolysis and incineration are both feasible technologies for treating urban waste, so that the garbage incineration poly-generation system combining the incineration and the pyrolysis can effectively improve the energy utilization efficiency and slow down the current environmental pressure.

Disclosure of Invention

According to the characteristics of pyrolysis and garbage incineration power generation mentioned in the background art, the utility model provides a carbon-oil-electricity poly-generation system integrating tire pyrolysis and garbage incineration, which relates to garbage incineration power generation technology and pyrolysis technology and is coupling of chemical industry and power generation process from the current state of energy sources in China. A carbon-oil-electricity poly-generation system integrating tire pyrolysis and garbage incineration mainly comprises a garbage incineration boiler, a steam cycle generator set, a flue gas purification process, a tire pyrolysis process and coupling of the incineration and the pyrolysis process. Part of the high-temperature flue gas generated by the garbage incineration is extracted to be used as a heat source for the pyrolysis of the tires, and the synthesis gas generated by the pyrolysis can be sent into a hearth of the garbage incineration boiler for combustion. The garbage incineration and the tire pyrolysis are coupled, so that the garbage power generation efficiency can be improved on one hand; on the two aspects, the co-production of carbon oil and electricity is realized.

The steam cycle generator set comprises a steam turbine, a generator, a condenser, a condensate pump, a low-pressure heater, a deaerator, a water supply pump and a high-pressure heater; the flue gas purification process comprises a desulfurization and denitrification device, a dust remover and a smoke exhaust chimney; the tire pyrolysis process comprises a pyrolysis reactor, a pyrolysis product separator and a pyrolysis product cooler; the coupling part of the incineration and pyrolysis process comprises a pyrolysis reactor taking part of flue gas generated by garbage incineration as a heat source.

The outlet of the pyrolysis reactor is respectively connected with the inlet of the garbage incineration boiler and the pyrolysis product separator; the pyrolysis product separator is connected to a pyrolysis product cooler, and the pyrolysis product cooler is connected to a garbage incineration boiler; the outlet of the garbage incineration boiler is connected with the inlet of the steam turbine, the steam turbine is coaxially connected with the generator, and the outlet of the steam turbine is respectively connected to the condenser, the low-pressure heater, the deaerator and the high-pressure heater; the condenser, the condensate pump, the low-pressure heater, the deaerator, the water supply pump and the high-pressure heater are sequentially connected, and the outlet of the high-pressure heater is connected with the inlet of the garbage incineration boiler; the outlet of the garbage incineration boiler is connected with the inlet of the desulfurization and denitrification device, the outlet of the desulfurization and denitrification device is connected with the inlet of the dust remover, and the outlet of the dust remover is connected with the smoke exhaust chimney.

The tire pyrolysis process is characterized in that: the tire pyrolysis reactor is a kinetic reactor.

The coupling part of the incineration and pyrolysis process is characterized in that: extracting a part of flue gas generated by garbage incineration as a heat source of a pyrolysis reactor for use, and returning the part of flue gas to a garbage incineration boiler after passing through the pyrolysis reactor; and sending the pyrolysis gas generated by the pyrolysis product cooler to a garbage incineration boiler for combustion.

The steam cycle generator set is characterized in that: the final-stage exhaust steam of the steam turbine enters a condenser, the high-pressure heater, the deaerator and the low-pressure heater respectively take the extraction steam with the pressure matched with that of the steam turbine as heat sources, the high-pressure heater and the low-pressure heater drain water and flow automatically step by step, and are respectively converged into the deaerator and the condenser water tank.

The beneficial effects of the utility model are as follows:

the utility model provides a carbon-oil-electricity poly-generation system integrating tire pyrolysis and waste incineration, which is characterized in that the waste incineration power generation and the tire pyrolysis are combined, a part of high-temperature flue gas generated by the waste incineration is extracted to be used as a heat source for the tire pyrolysis, and synthesis gas generated by the pyrolysis can be sent into a waste incineration boiler for combustion; the heat value of the tire is higher, valuable hydrocarbon is recovered through pyrolysis, and the utility model can improve the efficiency of garbage power generation on one hand and realize the combined production of carbon, oil and gas on the other hand.

Drawings

FIG. 1 shows a schematic diagram of a carbon oil-electricity poly-generation system integrating tire pyrolysis and garbage incineration.

In the figure: 1-a garbage incineration boiler; 2-a steam turbine; a 3-generator; 4-a condenser; 5-a condensate pump; 6-a low pressure heater; 7-deaerator; 8-a water supply pump; 9-a high pressure heater; 10-desulfurization and denitrification device; 11-a dust remover; 12-a smoke exhaust chimney; 13-a plastic pyrolysis reactor; 14-a pyrolysis product separator; 15-pyrolysis product cooler.

Description of the embodiments

The utility model provides a carbon oil-electricity poly-generation system integrating tire pyrolysis and garbage incineration, and the utility model is further described below with reference to the accompanying drawings and the specific embodiments.

FIG. 1 shows a carbon oil-electricity poly-generation system integrating tire pyrolysis and garbage incineration.

As shown in figure 1, the carbon-oil-electricity poly-generation system integrating tire pyrolysis and garbage incineration mainly comprises a garbage incineration boiler, a steam cycle generator set, a flue gas purification process, a tire pyrolysis process and coupling of the incineration and pyrolysis processes.

The main flow of the working medium of the steam cycle generator set is as follows: the steam heated by the garbage incineration boiler 1 enters a steam turbine 2 to expand and do work to drive a generator 3 to generate electricity, the temperature and pressure of the steam after doing work are reduced, and the exhaust steam enters a condenser 4 to release heat; in the steam expansion working process, partial steam is extracted from a proper position of a steam turbine and is used as a heat source of a high-pressure heater 9 and a low-pressure heater 6 in a regenerative system of a steam turbine generator set; condensed water after heat release of the condenser 4 is pumped into the low-pressure heater 6 through the condensate pump 5, working medium at the outlet of the low-pressure heater 6 flows through the deaerator 7, the water feeding pump 8 and the high-pressure heater 9 enter the garbage incineration boiler 1 for recycling, and in the condensation water recycling process, the high-pressure heater 9 and the low-pressure heater 6 drain water automatically flow step by step and are respectively collected into the deaerator 7 and the water tank of the condenser 4.

The main flow of the working medium in the flue gas purification process is as follows: the flue gas from the garbage incineration boiler 1 firstly passes through a desulfurization and denitrification device 10 to remove acid gas in the flue gas, sulfur and nitrogen harmful components in the flue gas are eliminated, the flue gas from the desulfurization and denitrification device 10 passes through a dust remover 11 to remove fine, dry and non-fibrous dust in the flue gas, and the purified flue gas is discharged to the atmosphere through a flue gas chimney 12.

The main flow of the working medium in the tire pyrolysis process is as follows: the waste tires enter a pyrolysis reactor 13 for pyrolysis, a pyrolysis product enters a pyrolysis product separator 14 for separating a vapor phase from a non-vapor phase, the vapor phase is cooled by a pyrolysis product cooler 15 for separation, and the separated products comprise synthesis gas and pyrolysis oil, and the synthesis gas can be sent into a waste incineration boiler 1 for circulation.

The coupling part working medium flow of the incineration and pyrolysis process is as follows: and (3) extracting a part of high-temperature flue gas generated by the garbage incineration as a heat source for the tire pyrolysis, and returning the synthesis gas generated by the pyrolysis to a garbage incineration boiler for combustion.

The utility model provides a carbon-oil-electricity poly-generation system integrating tire pyrolysis and garbage incineration, which mainly comprises a garbage incineration boiler, a steam cycle generator set, a flue gas purification process, a tire pyrolysis process and coupling of the incineration and the pyrolysis process. Extracting a part of high-temperature flue gas generated by the garbage incineration as a heat source for the pyrolysis of the tires, and sending synthetic gas generated by the pyrolysis into a garbage incineration boiler for combustion; the system couples two processes of chemical industry and power generation, and improves the efficiency of energy utilization.

The above embodiments are only for illustrating the present utility model, wherein the structure and connection manner of each component may be changed, and all equivalent changes and modifications based on the technical solution of the present utility model are within the protection scope of the present patent.

Claims (2)

1. A charcoal oil electricity poly-generation system integrating tire pyrolysis and garbage incineration is characterized in that: the device comprises a garbage incineration boiler (1), a steam cycle generator set, a flue gas purification process, a tire pyrolysis process and coupling of incineration and pyrolysis processes; the steam cycle generator set comprises a steam turbine (2), a generator (3), a condenser (4), a condensate pump (5), a low-pressure heater (6), a deaerator (7), a water supply pump (8) and a high-pressure heater (9); the flue gas purification process comprises a desulfurization and denitrification device (10), a dust remover (11) and a smoke exhaust chimney (12); the tire pyrolysis process comprises a pyrolysis reactor (13), a pyrolysis product separator (14) and a pyrolysis product cooler (15); the coupling part of the incineration and pyrolysis process comprises a pyrolysis reactor (13) which takes part of flue gas generated by garbage incineration as a heat source; the outlet of the garbage incineration boiler (1) is connected with the inlet of the pyrolysis reactor (13), and the outlet of the pyrolysis reactor (13) is respectively connected with the inlet of the garbage incineration boiler (1) and the pyrolysis product separator (14); the pyrolysis product separator (14) is connected to the pyrolysis product cooler (15), and the pyrolysis product cooler (15) is connected to the garbage incineration boiler (1); the outlet of the garbage incineration boiler (1) is connected with the inlet of the steam turbine (2), the steam turbine (2) is coaxially connected with the generator (3), and the outlet of the steam turbine (2) is respectively connected to the condenser (4), the low-pressure heater (6), the deaerator (7) and the high-pressure heater (9); the condenser (4), the condensate pump (5), the low-pressure heater (6), the deaerator (7), the water supply pump (8) and the high-pressure heater (9) are sequentially connected, and an outlet of the high-pressure heater (9) is connected with an inlet of the garbage incineration boiler (1); the outlet of the garbage incineration boiler (1) is connected with the inlet of the desulfurization and denitrification device (10), the outlet of the desulfurization and denitrification device (10) is connected with the inlet of the dust remover (11), and the outlet of the dust remover (11) is connected with the smoke exhaust chimney (12).

2. A carbon oil electricity poly-generation system integrating tire pyrolysis and waste incineration as claimed in claim 1, wherein: the tyre pyrolysis reactor (13) is a kinetic reactor.

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