New technology for preparing sodium acetate from furfural waste gas
A technology of sodium acetate and a new process, which is applied in the field of furfural, can solve problems such as imperfect furfural waste gas treatment process, acetic acid pollution of the environment, and health impacts, and achieve the effects of being conducive to safe production, improving the working environment, and increasing corporate income
Inactive Publication Date: 2018-12-21
河北春蕾实业集团有限公司 +1
View PDF5 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] The invention proposes a new process for preparing sodium acetate from furfural waste gas, which solves the problems in the prior art that the acetic acid in furfural waste gas is directly discharged to pollute the environment, affect health, waste resources, and the treatment process of furfural waste gas is not perfect.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0029] like figure 1 As shown, a device for preparing sodium acetate from furfural waste gas proposed by the present invention includes a gas slag separator, a waste gas buffer tank, a neutralization reactor, a decolorizer, a filter, an evaporator, a crystallization tank, and a centrifuge connected in sequence. , Mother liquor storage tank, fan is also connected between the waste gas buffer tank and the neutralization reactor, a water pump is connected between the ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention belongs to the technical field of furfural, and provides a new technology for preparing sodium acetate from a furfural waste gas. The new technology comprises the following steps: aftercompletely hydrolyzing the furfural, enabling the waste gas and a furfural residue after hydrolyzing to be discharged into a gas-residue separator together; sending the furfural residue to a boiler for combusting, sending the waste gas to a waste gas buffering tank for storing, sucking the waste gas into a neutralization reactor, adding sodium permanganate, adding alkaline liquor and neutralizinguntil a PH is 6, washing the gas by the alkaline liquor and discharging after reaching a standard, sending liquid to a decoloring device, after decoloring by using a decolorizer, feeding the liquid into a filter through a pump, filtering impurities, sending the impurities to the boiler for combusting, after filtering, feeding decoloring liquid to an evaporator for concentrating, enabling concentrated liquor to be placed in a crystallizing tank for crystallizing, centrifugally-separating, to obtain crystalline sodium acetate, packaging, sending crystallized mother liquor to a mother liquor storage tank, and feeding into the decoloring device for recycling through the pump. The technology is capable of solving problems in the prior art that the environment is polluted because acetic acid inthe furfural waste gas is directly discharged, health is affected, resources are wasted, a treatment process of the furfural waste gas is incomplete and the like.
Description
technical field [0001] The invention belongs to the technical field of furfural and relates to a new process for preparing sodium acetate from furfural waste gas. Background technique [0002] Furfural is a multipurpose organic chemical raw material, mainly used in: synthetic resin, synthetic fiber, synthetic rubber, petroleum refining, steel, pharmaceuticals, papermaking, reprocessing furfuryl alcohol, etc. Chemical materials. [0003] Furfural mainly uses corncobs as raw materials. Under the action of an acidic catalyst (sulfuric acid), it is heated and pressurized to hydrolyze the pentosan contained in corncobs to form pentoses, and then the pentoses are dehydrated to produce furfural. Furfural is formed by dehydration and cyclization of pentose, which can be obtained by hydrolysis of polypentose contained in plant fiber, and polypentose is the anhydride of pentose (C 5 h 8 o 4 )n, the pentose sugar is obtained after hydrolysis, and then under the action of acid, 3 mo...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/41C07C51/42C07C51/43C07C51/47C07C51/487C07C53/10C07C51/16C07C53/08
CPCC07C51/16C07C51/412C07C51/42C07C51/43C07C51/47C07C51/487C07C53/10C07C53/08
Inventor 杨晓静杨会桐卢伟杨晓航
Owner 河北春蕾实业集团有限公司