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Production method of furfural with high purification rate and special apparatus therewith

A production method and technology for special equipment, applied in the chemical industry, organic chemistry, sustainable manufacturing/processing and other directions, can solve the problems of increasing the production cost of furfural, low impurity removal rate, increasing the distillation load and cleaning frequency of the initial distillation column, and the like, Achieve the effect of improving enterprise economic benefits, enhancing purification effect and reducing production cost

Active Publication Date: 2011-07-27
宏业生物科技股份有限公司
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Problems solved by technology

At present, the solid impurities of furfural gas are removed by connecting the cyclone dust collector and slag remover behind the hydrolysis kettle, and dust removal equipment needs to be added, and the impurity removal rate of this method is low. Under 80%, the initial distillation tower of the next process is increased. Distillation load and cleaning frequency (1 time / 20 days) greatly increase the production cost of furfural

Method used

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  • Production method of furfural with high purification rate and special apparatus therewith
  • Production method of furfural with high purification rate and special apparatus therewith
  • Production method of furfural with high purification rate and special apparatus therewith

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Embodiment Construction

[0026] A production method of furfural with a high purification rate. The biomass is pulverized and then mixed with acid and sent to a hydrolysis tank for hydrolysis. The furfural gas produced after hydrolysis is passed into the water for washing and purification. The purified furfural gas enters the initial distillation and rectification process, and rectification Finally, furfural products are obtained.

[0027] A special equipment for furfural production, such as figure 1 As shown, it includes pulverizer 2-1, acid mixing machine 2-2, feeder 2-3, hydrolysis kettle 2-4, primary distillation tower 2-6, rectification tower 2-7 and boiler 2-8, boiler 2 -8, hydrolysis kettle 2-4, washing tank 2-5, initial distillation tower 2-6 and rectification tower 2-7 are connected successively, and hydrolysis kettle 2-4 is four hydrolysis kettles connected in series, and the outlet of the previous hydrolysis kettle The air pipe is connected in series with the intake pipe of the next hydroly...

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Abstract

The invention discloses a production method of furfural with high purification rate, which comprises: pulverizing biomass, mixing with acid, and sending to a hydrolysis kettle for hydrolysis; leading furfural gas produced after the hydrolysis to water for washing and purification; sending the purified furfural gas to fore-running and rectifying procedures so as to obtain the finished furfural. The invention also discloses a special apparatus for producing furfural, which comprises a pulverizer, an acid mixer, a material feeder, a hydrolysis kettle, a fore-running tower, a rectifying tower anda boiler, wherein the boiler, the hydrolysis kettle, the fore-running tower and the rectifying tower are sequentially connected, and a washing tank is arranged between the hydrolysis kettle and the fore-running tower. The removal rate of solid impurities in furfural gas after the hydrolysis reaches above 99%, the impurity removal process does not need electric power consumption, and the energy saving effect is obvious. After popularization, the production method and the special apparatus have favorable economic and social benefits, and meet the requirements for the strategy of sustainable development.

Description

technical field [0001] The invention belongs to the technical field of furfural production, and in particular relates to a method for producing furfural with a high purification rate, and at the same time relates to a special equipment for the method. Background technique [0002] Furfural, also known as furfural, is a light yellow or amber crystal clear liquid without mechanical impurities. Physical properties: colorless oily liquid with a special smell similar to benzaldehyde. When exposed to light and air, the color quickly turns reddish brown, flammable, and easily volatilizes with steam. Its steam forms an explosive mixture with air, slightly soluble in water, easily soluble in ethanol and ether. Furfural is an important organic chemical product, which is widely used in the fields of synthetic resin, petroleum refining, fuel, medicine and light chemical industry. Furfural is mainly produced by using pentosan in plant fiber raw materials. All plant fiber materials rich...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D307/50
CPCY02P20/10
Inventor 陈志勇
Owner 宏业生物科技股份有限公司
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