Biomass, especially active sludge chain dry pyrolytic oil maker and system

Abstract

Biomass active mud chain oil maker with drying and pyrolyzing functions and its system are disclosed. It consists of heat generating system, constant-temperature space, electromechanical integrated equipments of biomass oil purifying system and controlling system; heat generating system consists of heating furnace, feeding system, at least a set chain heat exchanger, air preheater and tailed gas treater, temperature in constant-temperature space is kept between 80-900 degree, constant-temperature space is closed case set with thermal-insulating layer periphery, each set of chain heat exchanger consists of at least one chain rope, driver, heat-transferring wall, driving chain wheel and driven chain wheel; ascending chain and descending chain get through by each chain rope, steering chain containing driving chain wheel and driven chain wheel are closed. Raw material with high-water content passes by ascending chain and descending chain as water-content evaporating section, and pyrolyzed gas evaporating section and high-temperature section. The process is carried out by evaporating, pyrolyzing, crushing for mud carbon, drying and burning. It can be used to manufacture inflammable gas, mud carbon and liquid fuel.

Description

technical field [0001] The invention relates to a highly water-containing viscous and fine-grained biomass, especially an activated sludge chain-type drying and pyrolysis oil production device and system, which belongs to the fields of energy chemical industry, renewable resources and environmental protection; the device is especially suitable for Sludge treatment, river dredging mud treatment, drilling mud treatment, coal washing slime treatment, biomass liquefaction and livestock and poultry breeding pollutants treatment and other projects. Background technique [0002] In the known technology of obtaining biomass liquefied oil after biomass pyrolysis, cracking reactors such as fluidized bed, circulating fluidized bed and rotating cone are generally used. For example, biomass integrated pyrolysis graded preparation of liquid fuel device (CN1390915), the method for preparing bio-oil from biomass hydrolysis residue (CN1385508), its technology all use...

AI Technical Summary

Problems solved by technology

[0003] 1. The condensable liquefied oil gas produced by the fluidized bed reactor stays in the high temperature area for a long time, and the secondary reaction is serious, which reduces the collection rate and oil quality;

[0004] 2. The particle residence time is short, the pyrolysis is insufficient, and the conversion rate of volatile components is low; it is difficult to start and stop the system, and a large number of additional conditions and auxiliary materials are required;

[0005] 3. It is difficult to adjust the process parameters randomly, and the fluctuation of the operating state parameters has a severe reaction to the product quality and recovery rate, which cannot adapt to the scale-up of the industry, and cannot automatically adapt to the changes in the quality of raw materials and physical parameters;

[0006] 4. For raw materials with high moisture content, it is necessary to mix (reverse mix) the dried raw materials at the inlet to enter the drying or incineration or pyrolysis reactor, and the process is complicated;

[0007] 5. When the raw material enters the drying or pyrolysis reactor, the superheated fluid with high temperature and high energy generated by the heat generation subsystem cannot be directly used to avoid overburning and fouling of the sludge, and even cause deflagration or explosion The possibility of seriously affecting the thermal energy utilization efficiency

The organic matter in the sludge is about 50%, and the calorific value of the dry mixed sludge is 24-29MJ / kg. Theoretically, the calorific value held by itself can only be burned when the water content is lower than 70%. Moisture is a better fuel and can generate abundant heat; however, the existing sludge drying or incineration equipment such as rotary kiln, rotary furnace, fluidized bed, etc., due to the high moisture content, high viscosity and solidification of sludge The characteristics of severe fouling, low efficiency of equipment, bulky, complex process, high investment, and need to dehydrate a large amount of water to be used as raw materials for treatment, and the sludge dust that is inevitably generated during the chemical process is easy to explode, we have not yet seen Report on industrial-scale technical equipment for producing liquefied oil by pyrolysis of activated sludge

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