A co-pyrolysis method of biomass and agricultural film based on double-barreled structure

A co-pyrolysis and biomass technology, applied in the field of resource utilization of agricultural and forestry waste, can solve the problem of affecting pyrolysis efficiency and pyrolysis products, restricting the utilization of co-pyrolysis solid products, and hindering the co-pyrolysis project of biomass and agricultural film issues such as industrialization and application, to achieve the effect of promoting advancement and high industrialized production value

Active Publication Date: 2021-10-08
INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the co-pyrolysis process, the plastic melts and wraps on the surface of the biomass, which affects its pyrolysis efficiency and pyrolysis products, which will hinder the engineering application of biomass and agricultural film co-pyrolysis, and limit the utilization of subsequent co-pyrolysis solid products

Method used

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  • A co-pyrolysis method of biomass and agricultural film based on double-barreled structure
  • A co-pyrolysis method of biomass and agricultural film based on double-barreled structure
  • A co-pyrolysis method of biomass and agricultural film based on double-barreled structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1. Co-pyrolysis equipment for biomass and agricultural film based on double-barrel structure

[0031] The biomass and agricultural film co-pyrolysis equipment based on the double-barrel structure, its structure is as follows figure 1 As shown, it includes a vertically arranged outer cylinder 10 and an inner cylinder 20 vertically sleeved inside the outer cylinder. A gap 30 with a width of 50 cm for materials to pass is provided between the inner cylinder 20 and the outer cylinder 10. The inner cylinder 20 can rotate around the longitudinal axis inside the outer cylinder 10 .

[0032] The co-pyrolysis equipment as a whole includes a feed area, a co-pyrolysis area and a carbon output area from top to bottom.

[0033] In the feed zone, such as figure 1 As shown, the outer diameter of the uppermost part of the inner cylinder 20 gradually increases, forming a feed inlet with a reduced diameter with the outer cylinder 10; below the feed inlet, spiral around the inne...

Embodiment 2

[0036] Example 2. Co-pyrolysis system of biomass and agricultural film based on double-barreled structure

[0037] The co-pyrolysis system of biomass and agricultural film based on double-barrel structure, its structure is as follows figure 2 As shown, it includes co-pyrolysis equipment 1, pipeline 2, cyclone dust removal equipment 3, oil and gas condensation equipment 4, tar collection tank 5 and burner 6 described in embodiment 1. The gas phase product outlet of the co-pyrolysis device 1 is connected to the cyclone dust removal device 3 through the pipeline 2, and the cyclone dust removal device 3 is connected to the condensation device 4 through the pipeline 2, and the bottom of the condensation device 4 passes through The pipeline 2 is connected to the tar collection pool 5, and the top is connected to the burner 6 through the pipeline 2.

Embodiment 3

[0038] Example 3. Biomass and agricultural film co-pyrolysis process

[0039] A kind of co-pyrolysis process of biomass and agricultural film, its technological process is as follows figure 1 As shown, it mainly includes: feeding process ①, co-pyrolysis process ②, gaseous product separation process ③, and carbon discharge process ④. The process adopts the co-pyrolysis system described in Embodiment 2, wherein the co-pyrolysis equipment always controls the rotation of the inner cylinder through a frequency conversion motor during the process.

[0040] The specific steps of the process are as follows:

[0041] Process ① (feeding process): It mainly includes mixing crushed biomass from agricultural and forestry waste and agricultural film as raw materials, and then transporting the materials to the feeding area of ​​the co-pyrolysis equipment. In the feeding area, with the rotation of the inner cylinder of the co-pyrolysis equipment, the raw materials enter the co-pyrolysis are...

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Abstract

The invention provides a method for co-pyrolysis of biomass and agricultural film. In the inner cylinder inside the outer cylinder, there is a gap between the inner cylinder and the outer cylinder, the inner cylinder can be rotated around the longitudinal axis, the outer wall of the inner cylinder and the inner wall of the outer cylinder are provided with a number of conical convex structures, and the sidewall of the outer cylinder There is a gas-phase product outlet, and a solid-phase product collection area is set at the bottom of the outer cylinder; the raw materials are heated to 550~650 °C in the gap and react for 40~50 minutes, and the inner cylinder is rotated, so that several conical protruding structures remain in the reaction process. Act on the raw material; the gas phase product is exported through the gas phase product outlet; the solid phase product enters the solid phase product collection area. The method of the invention effectively solves the problem of cracking the plastic melting layer wrapped on the biomass surface during co-pyrolysis, and at the same time can promote the advancement of raw materials and local stirring, the yield and quality of co-pyrolysis products are improved, and the overall performance is better. High industrial application value.

Description

technical field [0001] The invention relates to the field of resource utilization of agricultural and forestry waste, in particular to the co-pyrolysis technology of biomass and agricultural film in agricultural and forestry waste, and a special device thereof. Background technique [0002] Co-pyrolysis technology is a kind of thermochemical conversion method, which mainly converts one or more raw materials into gas, liquid and solid three-phase products through thermochemical conversion. Co-pyrolysis of biomass and agricultural film is to mix biomass and agricultural film according to a certain ratio, and then carry out thermochemical conversion through pyrolysis equipment to produce higher-quality fuel oil. [0003] At present, there are many researches on the co-pyrolysis of biomass and plastics at home and abroad, and the related technologies are relatively mature. However, there are also certain problems in the co-pyrolysis of biomass and plastics. Most plastic wastes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/00C10B53/00C10B53/02
CPCC10B53/00C10B53/02C10G1/00C10G2300/1003C10G2300/1011Y02E50/10
Inventor 赵立欣姚宗路谢腾霍丽丽贾吉秀
Owner INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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