A kind of device and method for improving 1,4-butanediol yield
A technology of butanediol and a part of it is applied in the field of devices to increase the yield of 1,4-butanediol, which can solve the problems of long process, unreachable product quality, large investment, etc., and achieve reduction of waste discharge and reasonable design , the effect of reducing pollution
Active Publication Date: 2017-05-10
内蒙古东景生物环保科技有限公司
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Problems solved by technology
The method adopted is basically a conventional distillation method, which has a long process, large investment, and high energy consumption. Moreover, due to the complex composition of the waste liquid, high boiling point, and high viscosity, the quality of the recovered product is often not as good as that of 1,4-butanediol products. quality standards, and it is impossible to treat two alcoholic waste liquids with different characteristics at the same time
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Embodiment 1
[0026] Utilize above-mentioned device to improve the method for 1,4-butanediol yield, specifically comprise the following steps:
[0027] The alcohol-containing waste liquid 10 is introduced into the heater 1 for heating, heated to the preset temperature, throttled, and then transported to the flash tank 2, and flashed at a specified pressure, and the flash volume is controlled by adjusting the pressure of the flash tank 2 , so that it can be concentrated by removing about 90% of the water on the premise of less loss of 1,4-butanediol;
[0028] The flash concentrated waste liquid 10 in the flash tank 2 is partly exported through the bottom outlet of the flash tank 2, and then introduced into the rectification column 4, and the other part is exported through the top outlet of the flash tank 2, and then imported into the rectification column 4. To the flash condenser 3, and the flash condensate is exported through the flash condenser 3;
[0029] By controlling the temperature a...
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The invention relates to a device and a method for improving 1,4-butanediol yield. The device comprises a heater, a flash drum, a flash condenser, a rectification tower, an overhead condenser, a reboiler and a plurality of liquid conveying pumps, wherein the liquid conveying pumps are connected with one or more of the components; the top outlet of the heater is connected with the side inlet of the flash drum; the top end outlet of the flash drum is connected with the top end inlet of the flash condenser; the bottom end outlet of the flash drum is connected with a side inlet I of the rectification tower; the top end outlet of the rectification tower is connected with the top end inlet of the condenser; the bottom end outlet of the condenser is connected with a side inlet II of the rectification tower; the bottom end outlet of the rectification tower is connected with the bottom end inlet of the reboiler; the top end outlet of the reboiler is connected with a side inlet III of the rectification tower; a gear pump is arranged at the bottom of the rectification tower.
Description
technical field [0001] The invention relates to the field of chemical equipment, in particular to a device for increasing the yield of 1,4-butanediol and a method for increasing the yield of 1,4-butanediol by using the device. Background technique [0002] 1,4-Butanediol (1,4-Butanediol, referred to as BDO) is an important basic organic chemical and fine chemical raw material, and its various derivatives are fine chemical products with high added value, widely used in national various areas of the economy. According to the difference of raw materials, a variety of production methods of 1,4-butanediol have been formed, such as alkyne aldehyde method, butadiene acetyl oxidation method, dichlorobutene hydrolysis method, allyl alcohol hydroformylation method and maleene Diacid anhydride hydrogenation method, etc. At present, the production method adopted in my country is the alkyne aldehyde method with acetylene and formaldehyde as the main raw materials. In the purification ...
Claims
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IPC IPC(8): C07C31/20C07C29/76
CPCC07C29/76C07C31/207
Inventor 俞海明范奕范恒忠
Owner 内蒙古东景生物环保科技有限公司