Method for preparing acetone and calcium formate by using biomass wastes

A technology of biomass waste and calcium formate, applied in the field of biomass waste resource utilization, can solve problems such as unreasonable disposal methods, environmental pollution, resource waste, etc., to achieve resource utilization, eliminate environmental pollution, and reduce production costs and operating costs

Inactive Publication Date: 2011-10-19
TONGJI UNIV
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Problems solved by technology

In fact, these biomass wastes are also a valuable renewable resource. Unreasonable dispo

Method used

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  • Method for preparing acetone and calcium formate by using biomass wastes
  • Method for preparing acetone and calcium formate by using biomass wastes

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Preparation of Acetone and Calcium Formate from Cellulose

[0029] With cellulose as reactant, H 2 o 2 As an oxidizing agent, Ca(OH) 2 As a catalyst, it is placed in a SUS 316 water-heated tubular reactor, and the water filling rate is controlled to be 35%. The hydrothermal oxidation reaction is carried out at a temperature of 200-450° C. and a pressure of 4-35 MPa. After reacting for 3 minutes, the reactor was quickly taken out, cooled, and the reaction was terminated. Quantitative analysis by HPLC showed that the yields of acetic acid and formic acid were 8-36.5% and 1-5.7%, respectively, and acetic acid and formic acid accounted for 96.1-98.3% of the total product.

[0030] Lime is added to the hydrothermal reaction product to obtain a mixed solution of calcium formate and calcium acetate, which is dried to obtain a mixture of calcium acetate and calcium formate. Control the temperature at 150-170°C, heat the mixture of calcium acetate and calcium formate, conde...

Embodiment 2

[0032] Production of Acetone and Calcium Formate from Vegetable Wastes

[0033] Vegetable waste is used as the reactant. Before the reaction, the vegetable waste should be pretreated by washing, crushing and sieving. After pretreatment, the particle size of the vegetable waste is 80-200 mesh. to compress O 2 or O 3 As an oxidizing agent, Ca(OH) 2 As a catalyst, it is placed in a SUS316 water heat pipe reactor, and the water filling rate is controlled to be 35%. The hydrothermal oxidation reaction is carried out at a temperature of 200-350° C. and a pressure of 4-25 MPa. After reacting for 1 min, the reactor was quickly taken out, cooled, and the reaction was terminated. Quantitative analysis by HPLC showed that the yields of acetic acid and formic acid were 6-23.6% and 0.8-4.2%, respectively, and acetic acid and formic acid accounted for 92.4-97.2% of the total product.

[0034] Subsequent steps are the same as in Example 1. The analysis results show that based on the ac...

Embodiment 3

[0036] Preparation of Acetone and Calcium Formate from Phenol Wastewater

[0037] Using phenol in phenol-containing wastewater as a reactant, the phenol-containing wastewater, oxidant H 2 o 2 and catalyst Ca(OH) 2 After mixing and preheating, it is input into a continuous flow tubular hydrothermal reactor. The hydrothermal oxidation reaction is carried out at a temperature of 200-300°C and a pressure of 5-20 MPa. The residence time of the reaction material in the tubular hydrothermal reactor is 1.5 minutes. After the reaction is completed, the product flows out through the back pressure valve. Quantitative analysis by HPLC showed that the yields of acetic acid and formic acid were 28.6% and 4.2%, respectively, and acetic acid and formic acid accounted for 95.6% of the total product.

[0038] Subsequent steps are the same as in Example 1. The analysis results show that based on the acid content in the mixed solution of acetic acid and formic acid, the yield of acetone can r...

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Abstract

The invention relates to a method for preparing acetone and calcium formate by using biomass wastes, and belongs to the technical field of biomass waste recycling. The method comprises the following steps of: under the hydrothermal condition, performing hydrothermal oxidation of the biomass wastes to obtain acetic acid and formic acid; adding lime for neutralization to obtain a mixed solution of calcium acetate and calcium formate, drying the mixed solution to obtain a mixture of calcium acetate and calcium formate; heating the mixture so as to decompose the calcium acetate into calcium carbonate and acetone, and recovering the obtained acetone through condensation; and separating water soluble calcium formate from water insoluble calcium carbonate by using a dissolution-filtration method. Compared with the prior art, the method has the advantages of successfully recycling the biomass wastes, not causing secondary pollution and having high practical application value.

Description

technical field [0001] The invention relates to the technical field of resource utilization of biomass waste, in particular to a method for preparing acetone and calcium formate from biomass waste. Background technique [0002] Biomass waste mainly includes agricultural and forestry waste, industrial wastewater containing organic matter, and urban domestic organic waste. Most of these biomass wastes are directly dumped and landfilled without further treatment. In fact, these biomass wastes are also a kind of valuable renewable resources. Unreasonable disposal methods not only pollute the environment, but also cause great waste of resources. For this reason, the resource utilization of biomass waste has attracted people's attention day by day. [0003] At present, the methods for dealing with biomass waste mainly include direct combustion technology, vaporization technology, biomass ethanol technology, hydrogen production technology, thermal cracking technology and hydrothe...

Claims

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Application Information

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IPC IPC(8): C07C53/06C07C51/41C07C49/08C07C45/41
Inventor 曹江林金放鸣芦曼刘维钟恒田颖
Owner TONGJI UNIV
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