CN205046065U - Device for producing combustible gas by pyrolyzing carbon black in tire - Google Patents

Abstract

The utility model provides a device for producing combustible gas by pyrolyzing carbon black from tires. The device includes a combustion chamber located at the lower part and a gasification chamber located at the upper part. Water vapor secondary heating is arranged between the combustion chamber and the gasification chamber. device. The utility model uses the high-temperature carbon dioxide flue gas generated by tire pyrolysis carbon black combustion as the direct heating source and carbon source of the carbon black gasification, and has high thermal efficiency of the equipment, compact whole process and low equipment investment cost.

Description

A device for producing combustible gas by pyrolyzing carbon black from tires

technical field

The utility model belongs to the technical field of pyrolysis treatment of waste tires, in particular to a device for producing combustible gas by pyrolyzing carbon black from tires.

Background technique

Pyrolytic carbon black is the key product of waste tire pyrolysis, its quality and market application value directly restrict the economy of waste tire pyrolysis process. However, because waste tire pyrolysis carbon black contains recycled carbon black fillers, inorganic ash (such as ZnO and ZnS, etc.) and carbonaceous deposits generated during pyrolysis, its surface activity is poor and its commercial value is very low, making it Practical applications are greatly limited.

Contents of the invention

Aiming at the deficiencies of the prior art, the utility model provides a device for producing high-quality combustible gas by pyrolyzing carbon black from waste tires. After gas-solid separation and partial carbon dioxide adsorption and removal, the high-temperature carbon dioxide flue gas is used as a direct heating source and carbon source for carbon black gasification. The equipment has high thermal efficiency, compact process technology, and low equipment investment costs.

In order to realize above-mentioned utility model purpose, the utility model adopts following technical scheme to realize:

A device for producing combustible gas by tire pyrolysis carbon black of the present invention comprises a gasification chamber located at the upper part and a combustion chamber located at the lower part, and a water vapor secondary heating device is arranged between the combustion chamber and the gasification chamber; The bottom of the carbon black combustion chamber is provided with an ash outlet, the middle part is provided with carbon black and combustion-supporting air inlet, and the upper part is provided with a high-temperature flue gas outlet; the top of the carbon black gasification chamber is provided with a gas outlet, and the lower part is provided with a flue gas inlet and Gasification medium inlet; the high-temperature flue gas outlet is connected to the inlet of the gas-solid separation and carbon dioxide absorption device, and the outlet of the gas-solid separation and carbon dioxide absorption device is connected to the flue gas inlet through a flue gas pipeline; the gas outlet is connected to the gas The pipeline is connected to the waste heat boiler, and the waste heat boiler is connected to the inlet end of the steam secondary heating device through the steam pipeline, and the outlet end of the steam secondary heating device is connected to the gasification medium inlet.

Further, a thermal insulation material is provided outside the steam secondary heating device.

Further, the gas-solid separation and carbon dioxide absorption device are arranged in the same reactor, the upper part of the reactor is a cyclone dust removal area, and the lower part is a carbon dioxide absorption area.

Compared with the prior art, the advantages and positive effects of the utility model are: (1) the utility model utilizes waste tire pyrolysis carbon black as a raw material for the preparation of combustible gas, which can improve the use value of waste tire pyrolysis carbon black; ( 2) The high-temperature carbon dioxide flue gas generated by carbon black combustion is used as the direct heating source and carbon source for carbon black gasification. The whole process is compact and the equipment investment cost is low; (3) Gas-solid separation of high-temperature flue gas and partial adsorption of carbon dioxide The removal is carried out in the same device, and the equipment structure is compact; (4) The carbon black combustion chamber and the gasification chamber are set in the same reaction device, which are not only interconnected but also independent, which facilitates the precise control of various reaction conditions and can produce Hydrogen-rich combustible gas with a calorific value of 12-15MJ. (5) The prepared high-temperature combustible gas and carbon black are used to burn water vapor and superheated steam respectively, and the thermal efficiency of the system is higher.

Description of drawings

Fig. 1. The schematic diagram of the device structure of tire pyrolysis carbon black production combustible gas of the utility model.

detailed description

The technical solutions of the present utility model will be described in further detail below in conjunction with specific embodiments.

As shown in Figure 1, a kind of tire pyrolysis carbon black of the present utility model produces combustible gas device, comprises the gasification chamber 1 that is positioned at the upper part and the combustion chamber 2 that is positioned at the lower part, is provided with water in the middle of described combustion chamber and gasification chamber A steam secondary heating device 3, the bottom of the device 3 is a carbon black combustion zone, and the top is a carbon black gasification zone. The bottom of the carbon black combustion chamber 2 is provided with an ash outlet 5 , the middle part is provided with an inlet 4 for carbon black and combustion-supporting air, and the upper part is provided with a high-temperature flue gas outlet 6 . The top of the carbon black gasification chamber 1 is provided with a gas outlet 9 , and the lower part is provided with a flue gas inlet 8 and a gasification medium inlet 12 . In order to ensure that the temperatures of the combustion chamber and the gasification chamber are different, heat insulating materials are arranged outside the steam secondary heating device.

The high-temperature flue gas outlet 6 is connected to the inlet of the gas-solid separation and carbon dioxide absorption device 7 , and the outlet of the gas-solid separation and carbon dioxide absorption device 7 is connected to the flue gas inlet 8 through the flue gas pipe 13 . The gas outlet 9 is connected to the waste heat boiler 10 through a gas pipeline 15, the waste heat boiler 10 is connected to the inlet end 11 of the steam secondary heating device 3 through a steam pipeline 14, and the outlet of the steam secondary heating device 3 The end is connected with the gasification medium inlet 12.

The gas-solid separation and carbon dioxide absorption devices are arranged in the same reactor, the upper part of the reactor is a cyclone dust removal device, and the lower part is a carbon dioxide absorption device. The carbon dioxide absorbing device adopts 30% lye as the carbon dioxide adsorbent, and after the carbon dioxide is removed by adsorption, the volume concentration in the high-temperature flue gas is 30-40%.

The gas outlet 9 of the gasification chamber is connected to the waste heat boiler 10 , the steam produced by the waste heat boiler 10 enters the secondary heating device 3 through the water vapor inlet 11 , and the superheated steam generated enters the gasification chamber 1 through the gasification medium inlet 12 .

The utility model utilizes the above-mentioned device to carry out the operation method of producing combustible gas by tire pyrolysis carbon black as follows:

(1) In the combustion chamber 2, carbon black and excessive air carry out incomplete combustion reaction, and the carbon black combustion temperature is 800-1100 ℃, generates high-temperature flue gas containing carbon dioxide;

(2) The high-temperature flue gas is separated from the gas and solid through the cyclone dedusting device, part of the carbon dioxide is removed through the carbon dioxide adsorption device, and then enters the gasification chamber 1 through the flue gas pipeline 13, and the temperature in the gasification chamber is 700-900° C. The carbon black in the chamber reacts with carbon dioxide and water vapor in the high-temperature flue gas to generate high-temperature combustible gas containing hydrogen and carbon monoxide;

(3) Send the high-temperature combustible gas generated by the above reaction into the waste heat boiler 10 through the gas outlet 9, as a heat source for preparing steam, and the normal temperature and pressure steam produced in the waste heat boiler is sent into the steam for secondary heating through the steam pipeline 14 The device 3 conducts secondary heating and converts it into superheated steam, and then sends it into the gasification chamber to participate in the reaction.

The above embodiment is only one of several preferred implementation modes of the present utility model. It should be pointed out that the present utility model is not limited to the above-mentioned embodiment; Modification of the scheme, or equivalent replacement of some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution claimed by the utility model.

Claims (3)

1. a device for tire pyrolysis Carbon black production combustible gas, is characterized in that, comprises superposed vaporizer and the combustion chamber being positioned at bottom, is provided with water vapour second heating apparatus in the middle of described combustion chamber and vaporizer; The bottom of described carbon black combustion chamber is provided with ash outlet, and middle part is provided with carbon black and combustion air inlet, and top is provided with high-temperature flue gas outlet; The top of described carbon black vaporizer is provided with gas outlet, and bottom is provided with gas approach and gasifying medium inlet; Described high-temperature flue gas outlet is connected with the import of gas solid separation and absorption unit of dioxide carbon, and the outlet of described gas solid separation and carbon dioxide adsorption device is connected with gas approach by flue; Described gas outlet is connected with waste heat boiler by gas pipeline, and described waste heat boiler is connected with the entrance end of water vapour second heating apparatus by water vapour pipeline, and the exit end of described water vapour second heating apparatus is connected with gasifying medium inlet.

2. the device of a kind of tire pyrolysis Carbon black production combustible gas according to claim 1, is characterized in that, described water vapour second heating apparatus outer setting lagging material.

3. the device of a kind of tire pyrolysis Carbon black production combustible gas according to claim 1, it is characterized in that, described gas solid separation and absorption unit of dioxide carbon are arranged in same reactor, and reactor top is cyclone dust removal region, and bottom is carbon dioxide absorbing section.