Gas washing and recovering device for preparing macromonomers of poly carboxylic acid water reducing agent

A technology of polycarboxylic acid system and recovery device, which is applied in the separation of dispersed particles, chemical instruments and methods, separation methods, etc., to achieve the effects of increasing contact time, ensuring quality, and scientifically reasonable overall design structure.

Inactive Publication Date: 2011-06-15
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At this time, the gas can be discharged without further tail gas treatment.

Method used

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  • Gas washing and recovering device for preparing macromonomers of poly carboxylic acid water reducing agent
  • Gas washing and recovering device for preparing macromonomers of poly carboxylic acid water reducing agent
  • Gas washing and recovering device for preparing macromonomers of poly carboxylic acid water reducing agent

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with specific embodiments.

[0033] figure 1It is the front view of the gas washing recovery device for the preparation of polycarboxylate water reducer macromonomer according to the present invention. The device consists of the following parts: as shown in the figure, the mixed gas inlet pipe 1 is directly connected to the lower part from the top of the barrel body of the gas washing recovery device, and is connected with the coil tube 2 located at the lower part of the barrel body. Small holes 3 of different sizes, the diameter of the small hole 3 in the lower part of the coil increases gradually from the inlet end to the other end, and the small hole 3 in the lower part of the coil is located at the bottom of the coil 2. The grid 4 is positioned above the coil 2, the ceramic balls or glass balls 5 are placed above the grid 4, and the viewing mirror 7 is installed outside the staving, and ...

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Abstract

The invention discloses a gas washing and recovering device for preparing macromonomers of a poly carboxylic acid water reducing agent and relates to the field of a gas washing device for synthetic resin. The device comprises a mixed gas inlet pipe, a coil pipe (which is formed by winding a pipeline into a circle), a water inlet pipe, an emptying pipe, a charging hopper, a grating and a ceramic ball or a glass ball. The mixed gas inlet pipe enters from the top of the recovering device and is connected with the coil pipe at the bottom of the recovering device. The coil pipe is provided with small holes with different sizes at equal distances. The diameters of the small holes are gradually increased from a gas inlet end to a far end. The small holes are positioned at the lower part of the coil pipe. The grating positioned above the coil pipe is provided with the ceramic ball or the glass ball. Gas is uniformly exhausted from the coil pipe. After the gas is in sufficient contact with a solvent, materials in the gas are totally adsorbed and at that time the gas can be exhausted without being subjected to tail gas treatment, and thus, not only are the production raw materials recovered and the production cost is saved, but also the effect of protecting the environment is achieved.

Description

technical field [0001] The invention relates to the technical field of gas scrubbers used for synthetic resins, in particular to a synthesis method for carrying water with nitrogen in the esterification reaction of polycarboxylate water reducers. Background technique [0002] When synthesizing resins such as alkyd and polyester, small molecules of water will be produced as by-products. In order to improve the reaction rate and degree of reaction, the small molecules of water must be continuously brought out during the reaction. For industrial production projects, nitrogen gas is introduced during the esterification process to continuously bring the generated water out of the reactor, and in the process of nitrogen gas bringing out small molecule water, some volatile reactants will also be brought out. Most enterprises do not carry out gas scrubbing and material recovery, let alone tail gas treatment. Very few companies use gas scrubbing devices simply by inserting gas pipes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/18
Inventor 王子明郑付营徐莹李慧群吴昊李桃安刘晓崔素萍兰明章王亚丽毛倩瑾
Owner BEIJING UNIV OF TECH
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