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Method and system for preparing benzene by waste pyrolysis

A garbage and pyrolysis technology, which is applied in the field of waste resource treatment, can solve the problems that cannot meet the requirements of waste reduction, harmlessness and resource utilization, and achieve investment and operation cost savings, quality improvement, and energy conservation. consumption effect

Inactive Publication Date: 2016-10-26
SHENWU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the degree of garbage siege in my country is becoming more and more serious. Traditional garbage disposal methods mainly include sanitary landfill, composting, and incineration to generate electricity. Harmless and resourceful requirements

Method used

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  • Method and system for preparing benzene by waste pyrolysis
  • Method and system for preparing benzene by waste pyrolysis
  • Method and system for preparing benzene by waste pyrolysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] This embodiment provides a system for producing benzene by pyrolyzing garbage.

[0059] Such as figure 1 As shown, the system includes a feed device, a rotating bed pyrolysis reactor, a discharge device, an acetylene storage device, a cooling device and a benzene separation device.

[0060] Such as figure 2 As shown, the shape of the rotating bed pyrolysis reactor is circular, which includes a feed zone, a preheating zone, a reaction zone and a discharge zone. Among them, the feed area is provided with a feed port, the reaction area is provided with an acetylene inlet and a pyrolysis oil gas outlet, and the discharge area is provided with a discharge port.

[0061] The acetylene inlet is arranged on the bottom surface of the reaction zone. The pyrolysis oil gas outlet is arranged on the side wall of the reaction zone, and is located below the heating device in the reaction zone. The heating device in the preheating zone and the reaction zone is a regenerative radia...

Embodiment 2

[0068] This embodiment provides a method for producing benzene by pyrolyzing garbage using the system provided in Embodiment 1. The composition of the rubbish used is shown in Table 1, and the method is as follows: image 3 As shown, the details are as follows:

[0069] Most of the garbage is pyrolyzable organic matter after being sorted, crushed, dried, and shaped. Select 1 ton of garbage with a particle size of 10-30mm and a moisture content of 13wt%, and control the temperature in the second zone of the reaction to 650°C. The compressed waste enters the rotary bed pyrolysis reactor through the feeding device, and is evenly distributed on the bottom surface of the rotary bed reactor. With the rotation of the bottom surface, it is heated to 650°C in the preheating zone, reaction zone 1 and reaction zone 2 for pyrolysis. The reaction generates pyrolysis oil gas (including non-condensable gas and pyrolysis oil) and pyrolysis charcoal. In the case of not feeding acetylene gas...

Embodiment 3

[0073] This embodiment provides another method for producing benzene by pyrolyzing garbage using the system provided in Embodiment 1. The composition of the rubbish used is the same as the rubbish used in embodiment 2, and the method is as follows image 3 As shown, the details are as follows:

[0074] Most of the garbage is pyrolyzable organic matter after being sorted, crushed, dried, and shaped. Select 1 ton of garbage with a particle size of 10-30mm and a moisture content of 5wt%, and control the temperature in the second reaction zone to 750°C. The compressed waste enters the rotary bed pyrolysis reactor through the feeding device, and is evenly distributed on the bottom surface of the rotary bed reactor. With the rotation of the bottom surface, it is heated to 750°C for pyrolysis through the preheating zone, the first reaction zone and the second reaction zone. The reaction generates pyrolysis oil gas (including non-condensable gas and pyrolysis oil) and pyrolysis char...

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Abstract

The invention discloses a method and a system for preparing benzene by waste pyrolysis. The system comprises a rotating bed pyrolysis reactor, an acetylene storage device, a cooling device and a benzene separation device. The rotating bed pyrolysis reactor comprises a feeding area, a preheating area, a reaction area and a discharging area, the feeding area is provided with a feeding port, the reaction area is provided with an acetylene inlet and a pyrolysis oil gas outlet, and the discharging area is provided with a discharging port; the acetylene storage device is provided with an acetylene outlet which is connected with the acetylene inlet; the cooling device is provided with a pyrolysis oil gas inlet and a pyrolysis oil outlet, and the pyrolysis oil gas inlet is connected with the pyrolysis oil gas outlet; the benzene separation device is provided with a pyrolysis oil inlet and a benzene outlet, and the pyrolysis oil inlet is connected with the pyrolysis oil outlet. The method and the system for preparing benzene by waste pyrolysis have advantages of low investment, simple process, high economic benefit and the like.

Description

technical field [0001] The invention belongs to the technical field of garbage resource treatment, and in particular relates to a system and method for preparing benzene by pyrolyzing garbage. Background technique [0002] At present, the degree of garbage siege in my country is becoming more and more serious. Traditional garbage disposal methods mainly include sanitary landfill, composting, and incineration to generate electricity. Harmless and resourceful requirements. [0003] Garbage pyrolysis technology is a reaction process that uses high temperature to break the chemical bonds of organic polymers in domestic garbage and release various volatile components under anaerobic conditions. The products are solid carbon, pyrolysis gas and pyrolysis oil. The pyrolysis process will not produce secondary pollution, and the pyrolysis oil can be sold as a product. Therefore, compared with other treatment methods, pyrolysis of waste can meet the requirements of waste treatment at ...

Claims

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Application Information

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IPC IPC(8): C07C2/48C07C15/04C10B53/00C10B47/30
CPCC07C2/48C07C2521/18C10B47/30C10B53/00C07C15/04
Inventor 窦从从孟嘉乐郑倩倩张照王培伦吴道洪
Owner SHENWU TECH GRP CO LTD
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