Method for producing 4A zeolite without evaporation system

Through the 4A zeolite production method without evaporation system, the inner coil steam heating is used for acid-base reaction and crystallization, which solves the problem of evaporation system occupying a large amount of resources, and achieves the effect of reducing production costs and simplifying the process flow.

CN119320142APending Publication Date: 2025-01-17BINZHOU YINGKUNYUAN WOOD FIRE NEW MATERIALS CO LTD
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Patent Information

Application Number
CN202411303588.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-18
Publication Date
2025-01-17

AI Technical Summary

Technical Problem

In the production of 4A zeolites, the evaporation system occupies a large amount of investment and land, and the evaporation cost is high, which affects the production cost.

Method used

Using a production method without an evaporation system, the 4A zeolite mother liquor is mixed with sodium hydroxide to perform an acid-base reaction, and internal coil steam heating is used for crystallization to avoid steam condensation water from entering the system, thereby reducing alkali concentration and production costs.

Benefits of technology

It reduces the investment and process flow of 4A zeolite production, reduces the steam consumption required for evaporation, and significantly reduces production costs, while maintaining the balance and stability of the 4A zeolite production system.

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Abstract

The invention provides a method for producing 4A zeolite without an evaporation system, and relates to the technical field of 4A zeolite preparation. The method comprises the following steps: adding a certain amount of sodium hydroxide into 4A zeolite mother liquor, and heating by using steam of an inner coil pipe to prepare a sodium aluminate solution; dissolving sodium silicate with 4A zeolite washing liquor to prepare a sodium silicate solution; preparing a qualified 4A zeolite product from a sodium aluminate solution and a sodium silicate solution according to a certain proportion under a certain condition; and in the aluminum hydroxide dissolution and 4A zeolite crystallization process, condensate water formed by steam heating of the inner coil pipe is used for washing a 4A zeolite product. An evaporation system is not needed, the investment of 4A zeolite production can be reduced, the technological process can be shortened, and a large amount of steam consumption needed by evaporation in the 4A zeolite production process is reduced, so that the production cost is greatly reduced.
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