Method for innocuity, resource utilization and decrement Processing Of Organic Garbage

Abstract

The invention relates to a method for treating organic waste. Wherein, it combines a group of devices, as three basic subsystems; the external heating thermal cracking subsystem can thermally decompose the waste; the external heating catalyzing reducing gasifying subsystem can convert the product into fuel gas and make it innocent; the automatic detecting controlling subsystem is the last subsystem. The invention can be used to treat biological waste, the pollution of paper industry, etc.

Description

A method for harmless, resourceful and reduction treatment of organic waste technical field The invention discloses an organic waste (such as various plant straws, high-concentration waste liquid and dross discharged from paper mills, breweries, sugar factories, food processing factories, etc.) that is suitable for industrial and agricultural production. The organic matter part in urban waste and medical waste, etc.) is harmless, resourceful and reduced by means of equipment with continuous pyrolysis, catalytic cracking, carbonization and gasification functions. It belongs to the technical field of resources and environment. Background technique One of the background technologies: about biomass gasification technology Converting renewable biomass energy into biomass gas and then utilizing it is one of the thermochemical utilization methods of biomass energy. Due to the high utilization rate, cleanness and convenience of gaseous fuels, the research and development of bio...

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Problems solved by technology

2. The gas produced has low calorific value (≯5MJ / nm3), low firepower, and high wood tar content (generally ≮50mg / nm3), and is often forced to stop using it due to wood tar blocking the pipeline

1. The whole carbonization production process is "intermittent" work, neither can continuously add biomass raw materials, nor can it continuously discharge solid charcoal products from the system. The time is also long, therefore, the production efficiency is relatively low and cannot be used in large-scale industrial production;

2. The "stuffy retort" that works intermittently must "heat out and cool into" the heating chamber, which makes the "stuffy retort" used as a stove a waste of a lot of physical sensible heat, resulting in The thermal energy utilization rate of the system is relatively low;

3. During the production process, the output ratio of charcoal, gas and wood tar products cannot be randomly adjusted

For example, due to the limitation of the number of fixed gas users, the enterprises that mainly produce gas must stop production once the gas production is excessive, and cannot carry out continuous charcoal production that can bring more economic benefits to the production enterprises. economic benefits for business operators;

4. The raw material used in production is mainly sawdust, and it must be pre-compressed and compacted so that more raw materials can be loaded into a fixed "stuffy tank" and the production cost is relatively high; when straw materials are used At the same time, due to the poor quality of the charcoal produced and the large amount of powder, it generally needs to be remolded into shaped charcoal, which causes the problem that both investment and production costs need to be increased.

1. The calorific value of straw gasification is low, and it needs to be improved in stable operation, tar removal, gas purification and other technologies;

2. Lack of technical research and equipment development of direct combustion of straw for heating, which is inconvenient for multi-channel energy utilization;

3. There is a big gap in biomass power generation technology and devices

1. The calorific value of gas produced after straw gasification is low (about 5-12MJ / M3), so it is necessary to research and develop a special 'low calorific value gas generator' in order to improve the conversion efficiency into electrical energy;

2. The wood tar produced in the process of straw gasification needs to be treated by catalytic technology, but the catalyst used in petroleum catalytic technology has the problem that it is very easy to be covered by carbon deposits

3. There is a secondary pollution problem in the industrial wastewater produced by the treatment of wood tar

1. It cannot effectively prevent and eliminate the extremely harmful pollutants such as dioxins generated during the combustion process of chlorine-containing organic matter;

2. Since it can only produce gas with a calorific value ≯5MJ / nm3, the energy grade is very low, and the temperature of direct combustion is also relatively low, which cannot achieve the "harmless" treatment of garbage, especially to completely eliminate the gas generated during the combustion process The high temperature of ≮1200℃ required for 'dioxin'

This leads to a substantial increase in the cost of waste disposal;

3. The waste incineration equipment system designed and manufactured using this principle is relatively large, and it is difficult to integrate various (sets) of equipment in this complex system of "pyrolysis and gasification first, then secondary combustion"

4. Some large-scale waste incineration equipment also need to pre-process waste materials into block fuels or make composite fuels into granular states, and the production and processing process is relatively complicated.

In this case, not only the processing cost will be greatly increased, but also the goal of "harmless" may not be achieved.

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