A coupling device for methanol evaporation and formaldehyde absorption
A formaldehyde absorption and coupling device technology, which is applied in the direction of evaporation, dispersion particle separation, chemical instruments and methods, etc., can solve the problems of large power consumption of methanol circulating pumps, large cycle power consumption of formaldehyde absorption units, etc., and reduce production costs The effect of reducing cost, reducing equipment footprint, and reducing power load
Active Publication Date: 2016-03-23
JIANGSU KAIMAO PETROCHEM TECH
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However, due to the relatively large amount of circulating material in the formaldehyde absorption tower during the heat exchange process, the power consumption of the formaldehyde absorption unit cycle is very large, and if the methanol is evaporated and then used for external heat exchange, the power consumption of the methanol circulation pump is also very high big
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[0012] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.
[0013] Such as figure 1 As shown, a methanol evaporation-formaldehyde absorption coupling device, this product mainly includes two units, that is, the two units of methanol evaporation and formaldehyde absorption are included in one device, and then the methanol evaporation side and the formaldehyde absorption side are mainly separated by the partition wall. The materials are completely separated independently, that is, the process of material mass transfer cannot be car...
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The invention discloses a coupling device for methanol evaporation and formaldehyde absorption. The coupling device comprises a tower body; the tower body is divided into a methanol evaporation side and a formaldehyde absorption side independent from each other through a division wall; a methanol outlet and an air distribution pipe are arranged at the bottom of the methanol evaporation side; a heat transfer filler is arranged in the middle of the methanol evaporation side; a methanol sprayer is arranged at the upper part of the methanol evaporation side and connected with the methanol outlet through a conveying pump, so that circulation is formed; a methanol mixed gas outlet is also arranged on the top of the methanol evaporation side; a formaldehyde outlet and an air distribution pipe are arranged at the bottom of the formaldehyde absorption side; a filler is also arranged in the middle of the formaldehyde absorption side; a formaldehyde sprayer is arranged at the upper part of the formaldehyde absorption side and connected with the formaldehyde outlet through a conveying pump, so that circulation is formed; a formaldehyde mixed gas outlet is also arranged on the top of the formaldehyde evaporation side; and a heat transfer component passing through the two sides is arranged between the heat transfer fillers in a hybrid manner. According to the invention, the electricity consumption is reduced; formaldehyde absorption and methanol evaporation are integrated, therefore, the occupation area is saved; and the cost is reduced.
Description
technical field [0001] The invention belongs to the technical field of chemical production technology and equipment, and mainly relates to technical equipment for preparing silver-based formaldehyde production. Background technique [0002] At present, the production of formaldehyde by silver method is mainly divided into the following unit operations, methanol evaporation unit, oxidation reaction unit, formaldehyde absorption unit, and tail gas treatment unit. [0003] The main consumption of steam in the production of formaldehyde by the silver method is the evaporation of methanol. At present, there are two main methods of methanol evaporation in China: the first is a rising film evaporator. The temperature is 65~70°C, and steam is directly used as the heat source for methanol evaporation. This evaporation method consumes relatively large steam energy and is basically eliminated in China. At present, only some old factories are still using this evaporation method; the se...
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IPC IPC(8): B01D53/18B01D1/00
Inventor 向家勇许引
Owner JIANGSU KAIMAO PETROCHEM TECH