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Device and method for producing CO-rich synthesis gas through CO2 dry reforming reinforced sludge microwave continuous pyrolysis

A synthesis gas and microwave technology, applied in the field of resources and the environment, can solve problems such as yield and CO concentration to be improved, poor reactivity, etc., to reduce microwave energy consumption and material use costs, improve uniformity of pyrolysis, and improve thermal efficiency. solution efficiency

Pending Publication Date: 2022-05-13
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] (3) The yield and CO concentration of the product gas produced by continuous batch microwave pyrolysis of sludge need to be improved:
However, due to CO 2 Poor reactivity, requires activation at high temperature to further participate in reforming reactions

Method used

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  • Device and method for producing CO-rich synthesis gas through CO2 dry reforming reinforced sludge microwave continuous pyrolysis
  • Device and method for producing CO-rich synthesis gas through CO2 dry reforming reinforced sludge microwave continuous pyrolysis
  • Device and method for producing CO-rich synthesis gas through CO2 dry reforming reinforced sludge microwave continuous pyrolysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Example 1 A kind of CO 2 Equipment for dry reforming enhanced microwave continuous pyrolysis of sludge to produce CO-rich syngas

[0049] Such as figure 1 As shown, the device is a spiral propulsion microwave continuous pyrolysis device, wherein,

[0050] The interior of the equipment includes: a helical propulsion ceramic shaft, a quartz tube and a ferroferric oxide absorbing bed. The quartz tube is located at the bottom of the helical propulsion ceramic shaft, and a microwave processor of the ferroferric oxide absorbing bed is placed at the bottom of the quartz tube;

[0051] The outer wall of the equipment is equipped with a multi-mode microwave magnetron and an infrared probe;

[0052] The feeding control system is connected to the flat-plate vibrating feeding device, and the material is further conveyed to the screw propulsion ceramic shaft in the equipment through its feeding port;

[0053] The device passes the CO 2 The gas delivery pipe continuously enters C...

Embodiment 2

[0055] Example 2 Sludge spiral propulsion microwave continuous pyrolysis process to produce CO-enriched syngas

[0056] Adopt the equipment of embodiment 1, such as figure 2 The flow chart of producing CO-enriched syngas by spiral-propelled microwave continuous pyrolysis of sludge is shown, in which,

[0057] Before the treatment starts, use nitrogen as the carrier gas to remove the air in the microwave cavity;

[0058] Then, set the temperature program through the control panel, and heat the microwave cavity to the specified temperature. The specific steps are as follows: turn on the microwave equipment, input the microwave power at 1800W, and raise the temperature to 300°C; then, increase the microwave power by 400W every 15 minutes, and the maximum power is 4200W;

[0059] When the temperature in the microwave cavity reaches the set value (500°C to 700°C), the water-containing sludge (moisture content 60wt.%) is fed through the flat-plate vibrating feeding device at a pr...

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Abstract

The invention belongs to the field of resources and environments, particularly relates to application of a microwave pyrolysis technology to a reduction and resourceful treatment process of municipal or industrial sludge, and provides equipment and a method for producing CO-rich synthesis gas through CO2 dry reforming reinforced sludge microwave continuous pyrolysis. According to the invention, the limitation (as shown in figure 1) of high viscosity and difficult feeding of water-containing sludge is overcome by adopting a flat plate type vibration feeding method, so that the amount of sludge treated in unit time is increased. And meanwhile, the ceramic spiral propelling type feeding method is also beneficial to realizing continuous pyrolysis of the sludge and improving the phenomenon of non-uniform microwave irradiation of the sludge in the microwave pyrolysis process, so that the pyrolysis efficiency of organic matters in the sludge is improved.

Description

technical field [0001] The invention belongs to the field of resources and the environment, and specifically relates to the application of microwave pyrolysis technology to the reduction and recycling of municipal or industrial sludge, and provides a CO 2 Equipment and method for dry reforming enhanced microwave continuous pyrolysis of sludge to produce CO-rich synthesis gas. Background technique [0002] In the prior art, the application of microwave pyrolysis technology to municipal or industrial sludge mainly includes the following technologies: [0003] (1) Continuous batch sludge microwave pyrolysis technology: [0004] At present, most of the studies on sludge microwave pyrolysis to produce product gas adopt continuous batch feeding mode. %) mixing; (2) setting the microwave power and starting the microwave pyrolysis reaction; (3) as the temperature increases, the sludge first passes through the drying stage (100-200° C.). As the temperature rises, the sludge goes t...

Claims

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Application Information

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IPC IPC(8): C02F11/10C10B53/00C10J3/00C10J3/72
CPCC02F11/10C10B53/00C10J3/007C10J3/72C10J2200/15C10J2300/0923C10J2300/123
Inventor 马睿孙世昌林俊豪罗娟孙嘉曼徐东华龚帼金
Owner SHENZHEN UNIV