A high temperature resistant modified polyaspartic acid scale inhibitor and its preparation method and use method

A polyaspartic acid, high temperature resistant technology, used in descaling and water softening, chemical instruments and methods, geothermal power generation, etc., can solve problems such as poor thermal stability, and achieve stable structure, mild synthesis conditions, and reaction. The effect of easy availability of raw materials
CN113087903BActive Publication Date: 2022-05-20XI AN JIAOTONG UNIV
12 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2022-05-20

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a high-temperature-resistant modified polyaspartic acid scale inhibitor and its preparation method and application method, belonging to the technical field of chemical synthesis. The invention uses maleic anhydride and urea as raw materials and reacts them in a mixed acid solution. Polysuccinimide is obtained; polysuccinimide and prolinamide are subjected to ring-opening grafting reaction to obtain a high-temperature-resistant modified polyaspartic acid scale inhibitor. The nitrogen-containing heterocyclic small-molecule modified polyaspartic acid prepared by the present invention belongs to the non-phosphorus environment-friendly scale inhibitor, overcomes the disadvantage of poor scale inhibition effect of the existing polyaspartic acid at high temperature, and is suitable for calcium carbonate type The scaling system has excellent scale-inhibiting properties and is suitable for water circulation systems with local high temperatures such as urban geothermal heating systems and oil well production.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of chemical synthesis, and relates to a high-temperature-resistant polyaspartic acid scale inhibitor, a preparation method and a use method thereof. Background technique

[0002] A large number of anions and cations are often dissolved in industrial water systems. When changes in pressure, temperature, and concentration occur during the water use process, the concentration of inorganic salt ions in the system will be supersaturated, and then precipitated to form scale. Heat transfer efficiency brings safety hazards and economic losses to industrial production. Many industrial processes, such as geothermal resources application, reverse osmosis, multi-stage flash evaporation, multi-effect distillation, etc., are designed to scale in industrial water circulation cooling occasions, and the scale types mainly include calcium carbonate, calcium sulfate, calcium phosphate, and barium sulfate. , iron oxide, etc., ...

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