Process for preparing calcined soda by high salt low alkali forced-circulation carbonization

Abstract

The invention discloses soda ash preparation technology by a high-salt low-alkali forced circulation carbonization method, which comprises the following steps that: a soda solution is pumped into a forced circulation full mixing type carbonization tank, and a device is orderly provided with a carbonization system, a separation system and a calcination system; a raw material liquid with the composition of Na2CO3, NaHCO3 and NaCl, and a temperature of between 50 and 52 DEG C and furnace air CO2 are injected into a circulation pump of the carbonization system respectively; and the raw material liquid passes through the carbonization system, the separation system and the calcination system, and finally reaches a packaging system to obtain a finished product of granular light soda ash. The technology mainly takes sesquibasic low-alkali high-salt as a raw material to pass through a full mixing type carbonization reactor through the steps of controlling process indexes, improves production efficiency, also improves the utilization rate of the raw material, realizes the fully-closed operation of the flow, and ensures that the production process is continuous, steady and safe.

Description

High-salt and low-alkali forced circulation carbonization process of soda ash Technical field The invention belongs to the technical field of soda ash production technology, and relates to a soda ash production process of sesquialka, high-salt and low-alkali lye through forced circulation and full-mixing carbonization method, in particular to a soda ash production process of high-salt and low-alkali forced circulation carbonization method. Background technique At present, the raw materials of the carbonization method are high-alkali and low-salt and high-alkali and high-salt, and the soda ash product is obtained through the processes of carbonization, filtration, centrifugation, calcination and packaging. These two processes require that the amount of alkali and salt in the raw materials must be within a specified range, otherwise the utilization rate of raw materials will be greatly reduced, the output of products will be reduced, and ultimately the profit margin of the pr...

AI Technical Summary

Problems solved by technology

These two processes require that the amount of alkali and salt in the raw materials must be within the specified range, otherwise the utilization rate of raw materials will be greatly reduced, the output of products will be reduced, and ultimately the profit margin of the product will be relatively low

Images