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CN-122006619-A - Ionic polymer preparation device system and method for reducing raw material consumption

CN122006619ACN 122006619 ACN122006619 ACN 122006619ACN-122006619-A

Abstract

The invention provides an ionic polymer preparation device system and method for reducing raw material consumption, wherein the ionic polymer preparation device system comprises a reaction device, a pulping device, a washing and filtering device, an evaporation device, a waste liquid separation device and an acid-base separation device, wherein the reaction device, the pulping device, the washing and filtering device and the evaporation device are sequentially connected, the evaporation device is connected with the washing and filtering device through a distilled alcohol conveying pipeline, the washing and filtering device, the waste liquid separation device, the acid-base separation device and the reaction device are sequentially connected, and the waste liquid separation device is also connected with the reaction device. The ionic polymer preparation device system provided by the invention has the advantages that the design is reasonable, the raw materials are recycled, the raw material consumption is greatly reduced, the solvent recovery rate is high, the preparation cost of the ionic polymer is further reduced, and the ionic polymer preparation device is suitable for large-scale popularization and application.

Inventors

  • ZHAO ZHENGGUO
  • ZHANG XIAN
  • JIA XIANGYU
  • CHEN YONG
  • YANG KANG

Assignees

  • 盛虹(上海)新材料科技有限公司

Dates

Publication Date
20260512
Application Date
20260319

Claims (10)

  1. 1. The ionic polymer preparation device system for reducing raw material consumption is characterized by comprising a reaction device, a pulping device, a washing and filtering device, an evaporation device, a waste liquid separation device and an acid-base separation device; The reaction device, the pulping device, the washing and filtering device and the evaporation device are connected in sequence, and the evaporation device is connected with the washing and filtering device through a distilled alcohol conveying pipeline; The washing and filtering device, the waste liquid separating device, the acid-base separating device and the reaction device are sequentially connected; the waste liquid separation device is also connected with the reaction device.
  2. 2. The ionic polymer preparation device system as claimed in claim 1, wherein the reaction device comprises a reaction vessel; preferably, the number of the reaction kettles is at least 2, and the reaction kettles are sequentially connected.
  3. 3. The ionic polymer preparation device system of claim 1 or 2, wherein the wash filtration device comprises a plate filter press and a wash alcohol storage device; preferably, the number of the plate filter presses is at least 2, and the plate filter presses are connected in sequence; Preferably, the number of washing alcohol storage devices is the same as the number of plate filter presses; preferably, the washing alcohol storage device is respectively connected with the corresponding plate filter press and the subsequent stage plate filter press; preferably, the first stage wash alcohol storage means is also connected to the pulping means; Preferably, the waste liquid separation device is connected with a first-stage flat-plate filter press; preferably, the evaporation device is connected to a final stage wash alcohol storage device.
  4. 4. The ionic polymer preparation device system according to any one of claims 1 to 3, wherein the evaporation device comprises a microwave radiation heating type rotary decompression evaporator; Preferably, the acid-base separation device comprises a bipolar membrane electrodialysis and concentration integrated machine.
  5. 5. The preparation method of the ionic polymer for reducing the raw material consumption is characterized by adopting the preparation device system of the ionic polymer for reducing the raw material consumption, which is disclosed in any one of claims 1-4, and comprises the following steps: (1) The copolymer, the solvent and the additive are sequentially subjected to pulping, multistage washing, filtering and evaporation treatment after being reacted in a reaction device, so that a product is obtained; The solvent comprises a mixture of cyclohexane and alcohol in a volume ratio of 50:50-90:10, wherein distilled alcohol generated by evaporation treatment in the multistage washing and filtering process is used as washing alcohol to enter the final stage of filtering and washing, and filtered alcohol generated by each stage of filtering and washing is used as washing alcohol of the previous stage of filtering and washing; (2) The filtered alcohol generated in the washing and filtering process is subjected to waste liquid separation, the solvent obtained by separation returns to the reaction device for recycling, and the salt obtained by separation is subjected to acid-base separation; (3) And the acid and the alkali obtained by acid-base separation are returned to the reaction device for recycling.
  6. 6. The method of preparing an ionic polymer as claimed in claim 5, wherein the copolymer of step (1) comprises any one or a combination of at least two of an ethylene- (meth) acrylic acid copolymer, an ethylene- (meth) acrylic acid ester copolymer or an ethylene- (meth) acrylic acid sodium salt copolymer; preferably, the solvent comprises a mixture of cyclohexane and alcohol in a volume ratio of 85:15; preferably, the alcohol comprises any one or a combination of at least two of methanol, ethanol, isopropanol, n-propanol or n-butanol.
  7. 7. The method of preparing an ionic polymer according to claim 6, wherein the solvent of step (1) comprises a mixture of cyclohexane, methanol and ethanol, preferably a mixture of cyclohexane and methanol; Preferably, the water content of the washing alcohol is not higher than 5wt%; preferably, the additive comprises an acid or a base; Preferably, the acid comprises acetic acid; Preferably, the base comprises sodium hydroxide.
  8. 8. The method for preparing an ionic polymer according to any one of claims 5 to 7, wherein the volume ratio of the copolymer and the solvent in the step (1) is 10:90 to 40:60; Preferably, the volume ratio of the additive to the copolymer is 0:100-25:75.
  9. 9. The method for preparing an ionic polymer according to any one of claims 5 to 8, wherein the reaction temperature in the step (1) is 75 to 190 ℃; preferably, the reaction time is more than or equal to 20min; preferably, the stirring speed in the reaction process is more than or equal to 60r/min; Preferably, the slurry produced by pulping enters a multi-stage washing and filtering device for repeated circulating washing until the non-volatile residual solid content in filtered alcohol produced by a second-stage plate filter press exceeds 1wt%.
  10. 10. The use of the system for preparing an ionic polymer with reduced raw material consumption according to any one of claims 1 to 4, wherein the system for preparing an ionic copolymer with polyethylene as a main skeleton.

Description

Ionic polymer preparation device system and method for reducing raw material consumption Technical Field The invention relates to the technical field of polymerization reaction, in particular to an ionic polymer preparation device system and method for reducing raw material consumption. Background The ionic polymer resin has far-reaching ionic group polarity from hydrocarbon main chain, generally tends to form 'ion cluster' enrichment and generate 'physical crosslinking point', and endows the ionic polymer resin with excellent low-temperature impact toughness, low abrasion, high scratch resistance and chemical resistance. The ionic polymer is 'crosslinked' at low temperature and plastic at high temperature, while other polymers which are chemically crosslinked are difficult to recycle by remelting. The most widely used is ethylene- (meth) acrylic acid (or ester) ionic copolymer resins. The existing preparation methods of ionic polymer resins mainly comprise the steps of preparing ethylene- (methyl) acrylic acid (or ester) copolymer and a target metal-containing compound through melt mixing or solution reaction, such as disclosed in patent US3322734A, US4042766, and the steps of partially acidifying and neutralizing metal ions in a polymer chain, such as disclosed in patent US2599123A, US2953551A, US4956418 and patent US20240002645A1. The melt mixing reaction has the problems of uneven distribution and blockage of added metal compound solids in the high-viscosity ethylene- (methyl) acrylic acid (or ester) copolymer melt, the problem of scorching caused by overhigh local reaction temperature also exists due to difficult heat dissipation, the problem of sufficient release of alcohol micromolecules generated by saponification of esters is also difficult, in addition, the temperature is generally up to 200-320 ℃, the potential side reaction is more likely to exist, and if the free salt of a byproduct exists, the free salt is almost not removed due to the encapsulation of the melt. For example, patent US5320905 mentions that it is difficult to obtain a polymer with a high ion content by reacting an ethylene-acrylic acid copolymer with a metal compound by a melt method, and there is a problem that the metallization is not uniform because of poor molecular spreadability. Thus, the solution process reaction has its unique advantages, as in patent US20240002645A1. The solvent selectivity and the reduction of the amount used in the solution process are important, the former ensures sufficient contact and high efficiency of the reaction, the latter reduces the manufacturing cost and reduces pollution, and the two ensure the stability of the product quality together. However, the conventional solution method disclosed in the patent has problems such as too high boiling point or too poor solubility of the solvent used. The ionomer production process mentioned above is not efficient under the same conditions due to poor solvent solubility (generally about 90 ℃ is required), and is also high in energy consumption for solvent separation during the post-treatment and high in residual property due to the use of a high boiling point solvent, and a large solvent amount is required for post-eluting to remove the free neutralization salt. Therefore, it is of great importance to develop an ionic polymer production apparatus system and method that has low raw material consumption, high solvent recovery and low production cost. Disclosure of Invention In view of the problems existing in the prior art, the invention provides an ionic polymer preparation device system and method for reducing raw material consumption, which are characterized in that raw materials are recycled by reasonably arranging the connection relation among a reaction device, a pulping device, a washing and filtering device, an evaporation device, a waste liquid separation device and an acid-base separation device, so that the raw material consumption is greatly reduced, the preparation cost of the ionic polymer is further reduced, and the copolymer to be reacted can be dispersed in molecular level by using a solvent containing cyclohexane, so that the prepared ionic polymer product has no solvent residue and high quality, and is suitable for being popularized and applied in a large range. To achieve the purpose, the invention adopts the following technical scheme: in a first aspect, the present invention provides an ionic polymer preparation device system for reducing raw material consumption, the ionic polymer preparation device system comprising a reaction device, a pulping device, a washing and filtering device, an evaporation device, a waste liquid separation device and an acid-base separation device; The reaction device, the pulping device, the washing and filtering device and the evaporation device are connected in sequence, and the evaporation device is connected with the washing and filtering device through a distilled alcohol conveying pipeline; The wash