Internal circulation type wood vinegar production and purification device

A purification device and technology of wood vinegar, applied in the direction of biofuel, special dry distillation, pyroligneous acid production, etc., to achieve the effect of simple structure, no secondary pollution, and compact combination

Inactive Publication Date: 2017-03-22
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] [Concept of the present invention] Aiming at the shortcomings of the current production and refining process of wood vinegar, this invention couples the pyrolysis process of biomass solid waste with the refining process of wood vinegar, which can be used according to the properties of the processed materials and the quality requirements of the obtained products. Corresponding pyrolysis and separation conditions

Method used

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  • Internal circulation type wood vinegar production and purification device
  • Internal circulation type wood vinegar production and purification device
  • Internal circulation type wood vinegar production and purification device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of wood vinegar by single treatment of 5kg rice husk

[0032] First check the airtightness of the entire unit.

[0033] Next, weigh a certain quality of rice husk, measure the particle size (0.3-0.45mm as an example), fill it into the furnace, and close the furnace door; weigh 500g of rice husk charcoal and fill it into the purification kettle; select hollow fiber ultrafiltration membranes respectively , nanofiltration membrane and reverse osmosis membrane are connected in series to assemble a refined wood vinegar purification tower.

[0034] Set the temperature of the pyrolysis furnace to 400°C, open the fuel oil valve, and heat the pyrolysis furnace; adjust the gas return valve of the pyrolysis furnace, and the return ratio is 5:1; open the gas return valve in the furnace after heating for 10 minutes, and use the gas Heat the pyrolysis furnace as a heat source; close the fuel oil valve. Set the temperature of the upper and lower sections of the purificat...

Embodiment 2

[0039] Preparation of wood vinegar by single treatment of 5kg corn stalks

[0040] First check the airtightness of the entire unit.

[0041] Next, weigh 5kg of corn stalks, measure the particle size (below 0.2mm as an example), fill them into the furnace, and close the furnace door; weigh 500g of corn stalk charcoal and fill it into the purification kettle; Osmotic membranes are connected in series to assemble a purified wood vinegar purification tower.

[0042] Set the temperature of the pyrolysis furnace to 500°C, open the fuel oil valve, and heat the pyrolysis furnace; adjust the gas return valve of the pyrolysis furnace, and the return ratio is 9:1; open the gas return valve in the furnace after heating for 10 minutes, and use the gas Heat the pyrolysis furnace as a heat source; close the fuel oil valve. Set the temperature of the upper and lower sections of the purification kettle to 300°C and 200°C respectively, open the valve of the liquid outlet in the middle layer o...

Embodiment 3

[0047] Single processing 5kg sawdust to prepare wood vinegar

[0048] First check the airtightness of the entire unit.

[0049] Next, weigh 5kg of sawdust, fill it into the furnace, and close the furnace door; weigh 500g of sawdust charcoal and fill it into the purification kettle; respectively select nanofiltration membranes and reverse osmosis membranes in series to assemble refined wood vinegar purification towers.

[0050] Set the temperature of the pyrolysis furnace to 400°C, open the fuel oil valve, and heat the pyrolysis furnace; adjust the gas return valve of the pyrolysis furnace, with a return ratio of 8:1; open the gas return valve in the furnace after heating for 10 minutes, and use the gas Heat the pyrolysis furnace as a heat source; close the fuel oil valve. Set the temperature of the upper and lower sections of the purification kettle to 250°C and 200°C respectively, open the valve of the liquid outlet in the middle layer of the crude purification kettle, and t...

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Abstract

The invention discloses an internal circulation type wood vinegar production and purification device. The device is composed of a biomass solid waste pyrolysis furnace, a display control touch screen, a two-section type purification tower, a coarse purification tower and a wood vinegar purification tower, wherein a heat source of the biomass solid waste pyrolysis furnace is provided by pyrolysis gas; the two-section type purification tower is composed of two charcoal filling plates and a temperature and pressure sensing system; and the wood vinegar purification tower is formed by coupling a film separation device and a rectification purification device body. The device adopts touch screen operation, the parameters such as the burning gas/burning oil flow rate, the pyrolysis gas reflux ratio, and the heating power, temperature, pressure and time of the two-section type purification tower are dynamically displayed, and data recording is conducted through a paperless recorder. The device is suitable for preparing wood vinegar through biomass raw materials in a pyrolysis mode and has the refining function and the advantages of high integration and automation degree and the like. The biomass solid waste pyrolysis process and the wood vinegar refining process are coupled, and the corresponding pyrolysis and separation conditions can be adopted according to characters of to-be-processed materials and the quality of obtained products.

Description

technical field [0001] The application relates to a biomass continuous pyrolysis and subsequent treatment device, in particular to an internal circulation type wood vinegar production and purification device. Background technique [0002] Today, with the diversification of biomass utilization, pyrolysis gasification is still one of the utilization technologies that are relatively mature and less dependent on industrial policies. It has also been widely demonstrated and promoted in my country, especially for gas and carbon. It is of great significance to improve the rural energy structure of our country, rationally utilize straw, and alleviate air pollution caused by straw burning. In the process of biomass pyrolysis and gasification, in addition to producing clean gas that can be used by rural residents, by-products such as biomass carbon, tar, and wood vinegar will also be produced. Wood vinegar is a reddish-brown water-soluble mixture solution , which contains organic acid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C5/00C10B53/02C10K1/32
CPCC10B53/02C10C5/00C10K1/002C10K1/32Y02E50/10
Inventor 徐建曲永水杜晓佳李宏强
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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