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Biomass negative-pressure degradation pretreatment process

A biomass and pretreatment technology, applied to the removal of solid waste, etc., can solve the problems of high maintenance and operation costs, high labor intensity, and low degree of mechanization, so as to shorten the utilization cycle, save heating energy consumption, and improve utilization rate Effect

Inactive Publication Date: 2013-09-25
SHENGLI OIL FIELD SHENGLI POWER MACHINERY GRP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

This traditional pretreatment process has contributed to the development and utilization of biomass, but at the same time there are the following shortcomings and deficiencies: ①The mechanical crushing pretreatment process does not change or destroy the internal structure of biomass, and the conversion and utilization rate of biomass is very low; ②Treatment Low efficiency and high energy consumption; ③High labor intensity and low degree of mechanization; ④The pretreatment process equipment is noisy, dusty, and poor working environment; ⑤The pretreatment process equipment wears quickly and the maintenance and operation cost is high

Method used

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  • Biomass negative-pressure degradation pretreatment process

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Effect test

Embodiment 2

[0020] (A) The step is: put the biomass and water into the degradation kettle according to the mass ratio of 1.5:1, and carry out the biomass moisture allocation; (B) The step is: pump the degradation kettle into a vacuum negative pressure of -0.05MPa gauge pressure pressure environment; (C) step is: under negative pressure environment, heat the mixture of biomass and water to 110°C; (D) step is: instantaneously mix the mixture heated to 110°C and gauge pressure 0.09MPa with low temperature negative pressure The condensing device is connected to carry out instantaneous negative pressure blasting; (E) step is: cooling the mixture after blasting, cooling the degradation tank to 65°C, and returning the cooled liquid condensed water to the water allocation process of step (A) , reused in the degradation tank.

[0021] Among them, step (C) negative pressure heating: it is carried out in a negative pressure environment where the biomass and water are mixed at a mass ratio of 1:1.5, ...

Embodiment 3

[0023] (A) The step is: put the biomass and water into the degradation tank according to the mass ratio of 1:2, and carry out the moisture adjustment of the biomass; (B) The step is: pump the degradation tank into a vacuum negative pressure of -0.09MPa gauge pressure pressure environment; (C) step is: under negative pressure environment, heat the mixture of biomass and water to 150°C; (D) step is: instantaneously mix the mixture heated to 150°C and gauge pressure 0.4MPa with low temperature negative pressure The condensing device is connected to carry out instantaneous negative pressure blasting; (E) step is: cooling the mixture after blasting, cooling the degradation tank to 95°C, and returning the cooled liquid condensed water to the water allocation process of step (A) , reused in the degradation tank.

[0024] Among them: (C) step negative pressure heating: it is carried out in a negative pressure environment where the biomass and water are mixed in a mass ratio of 1:2 and...

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Abstract

The invention relates to a biomass negative-pressure degradation pretreatment process comprising the steps that: (A) biomass and water is added into a degradation kettle according to a mass ratio of 2:1-1:2, and biomass water content regulation is carried out; (B) the degradation kettle is pumped to a vacuum negative-pressure environment with a gauge pressure of -0.02MPa to -0.09MPa; (C) under the negative-pressure environment, the mixture of the biomass and water is heated to 70-150 DEG C; (D), the mixture heated to 70-150 DEG C and with gauge pressure of 0.03-0.4MPa is instantaneously communicated with a low-temperature negative-pressure condensation device, such that instantaneous vacuum blasting is carried out; and (E) the blasted mixture is cooled, wherein the temperature in the degradation kettle is reduced to 20-95 DEG C; liquid-state condensation water after condensation can be refluxed to the water content regulation process in (A), and can be reutilized in the degradation kettle. The process provided by the invention has the characteristics of energy saving, environment friendliness, high utilization rate, low process temperature, simple process, safe operation, and easy realization. The method can be widely applied in biomass treatment projects.

Description

technical field [0001] The invention relates to a technical method of biomass pretreatment, in particular to a biomass negative pressure degradation pretreatment process. Background technique [0002] The traditional biomass pretreatment process is to use external force to carry out mechanical crushing such as rolling, shearing and impacting on the material. This traditional pretreatment process has contributed to the development and utilization of biomass, but at the same time there are the following shortcomings and deficiencies: ①The mechanical crushing pretreatment process does not change or destroy the internal structure of biomass, and the conversion and utilization rate of biomass is very low; ②Treatment Low efficiency and high energy consumption; ③High labor intensity and low degree of mechanization; ④The pretreatment process equipment is noisy, dusty, and poor working environment; ⑤The pretreatment process equipment wears quickly and the maintenance and operation co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00
Inventor 陈宜亮陈飞刘瑞刚许峰薛荣斌马广增
Owner SHENGLI OIL FIELD SHENGLI POWER MACHINERY GRP
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