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Efficient carbonization reaction method

A carbonization reaction and high-efficiency technology, used in chemical instruments and methods, inorganic chemistry, carbonate preparations, etc., can solve the problems of small production capacity of a single equipment, affecting product quality, and short operating cycles, reducing production costs and reducing production costs. The effect of operation and maintenance costs, reduction of equipment maintenance costs, and uniform and moderate product granularity

Pending Publication Date: 2021-06-11
HENAN ZHONGYUAN CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The tower body is mainly made of cast iron. The equipment is heavy, difficult to install, and not resistant to pressure, ammonia, ammonium, and salt corrosion. The service life is short and the production capacity of a single equipment is small;
[0004] 2. In the production process, due to equipment corrosion, it is easy to cause the iron content in the product to exceed the standard, which affects the product quality; in order to improve the corrosion resistance of the carbonization tower, the commonly used method is to use sulfide passivation, which increases the production cost on the one hand. On the other hand, it is not conducive to the stable operation of production operations and affects production efficiency;
[0005] 3. The sodium bicarbonate crystallization of the tower wall and the bottom cooling water tank of the traditional carbonization tower is prone to scarring on the inner wall, especially in the northern winter. Tower cleaning, short operation period, frequent tower down, reduces the production efficiency of the carbonization tower, and increases the operation and maintenance cost of the carbonization tower, which is not conducive to the stable operation of the production operation;
[0006] 4. The equipment belongs to normal pressure equipment without pressure, so it cannot be pressurized carbonization, and the carbonization efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: Such as figure 1 As shown, the high-efficiency carbonized reaction system includes a tubular pre-carbide 1 and a full mixing carbonized reactor 2, a second material outlet 1-1 of a tubular pre-carnation reactor 1 and a total mixed carnation reactor 2 The material inlet 2-1 is connected via a pipeline. In the present embodiment, the tubular pre-carbide 1 and the full mixing carbonized reactor 2 are both stainless steel, ammonia, ammonium, salt corrosion; no sodium sulfide is required to passivate.

[0036] In this embodiment, the tubular pre-carnation reactor 1 is a straight tube of both ends, and one end of the straight tube is provided with a first carbon dioxide gas inlet 1-2 and the first material inlet 1-3, and the other end of the straight tube is provided. The second material exit 1-1. The material is entered at the bottom of the tube pre-carnation reactor 1, and the carbon dioxide gas is incorporated by the bottom. The two are mixed in the pipe, and the ca...

Embodiment 2

[0044] Example 2: Such as figure 2 As shown, the high-efficiency carbonized reaction system is different from that of Example 1 in that the tubular pre-carnation reactor 1 includes two end sealing pre-carnam-proof tubes 1-6 and two-end sealing preparation tube 1-7, The pre-carnation pipe 1-6 is provided with a first carbon dioxide gas inlet 1-2, and the first material inlets 1-3 and the flushing water inlet 1-4, the top of the pre-carvation pipe 1-6 is provided with a first material outlet. 1-8; The top of the pre-carnation decrease tube 1-7 is provided with the second material inlet 1-9, and the bottom of the pre-crystallization tube 1-7 is provided with a second material outlet 1-1 and the flushing water outlet 1-5; A material exit 1-8 is connected to the second material inlet 1-9. When the U-tube structure is the same in the same length of the tube, it is easy to process and installed, and space is saved. Set rinsing water inlets 1-4 and rinse water outlets 1-5 are used to stop...

Embodiment 3

[0045] Example 3: Such as image 3 As shown, the high-efficiency carbonized reaction system is different from that of Example 1 in that the tubular pre-carnation reactor 1 is inverted U-tube, one end of the U-tube is provided with a first carbon dioxide gas inlet 1-2, first Material inlets 1-3 and flush water inlets 1-4, the other end of the U-tube is provided with the second material outlet 1-1 and the rinsing water outlets 1-5. The U-tube is easy to process and installed with the same length of the tubular body, and space is saved. Set rinsing water inlets 1-4 and rinse water outlets 1-5 are used to stop production, and the tube pre-carnation reactor 1 is stopped, and the flushing water is condensed. The remainder of this embodiment is identical to Example 1.

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Abstract

The invention discloses an efficient carbonization reaction method. The method comprises the following steps: (1) pre-carbonization reaction; (2) carbonization reaction; wherein the pre-carbonization reaction is completed in a tubular pre-carbonization reactor, gas and liquid can be intensely mixed in a short-time, short-distance, limited-space and high-carbon-dioxide-partial-pressure environment, the solubility of carbon dioxide in a liquid phase is remarkably improved, and the reaction rate is increased; the carbonization reaction is completed in the complete mixing carbonization reactor, the carbonization operation is stable, the reaction temperature is controllable, and the product granularity is uniform and moderate. The pre-carbonization reaction is firstly carried out in the tubular pre-carbonization reactor, then the carbonization reaction is completed in the complete mixing carbonization reactor, the produced sodium bicarbonate semi-finished product is dried and calcined to obtain the sodium carbonate product, and the product meets the quality requirement of high-quality sodium carbonate; the system is long in operation cycle, stable in operation, high in production efficiency and low in equipment maintenance cost; equipment is simple in structure, easy to manufacture and install, stable in operation, convenient for large-scale and automation, and the method is wide in application prospect.

Description

Technical field: [0001] The present invention relates to a carbonized reaction method, and more particularly to a highly efficient carbonization reaction method. Background technique: [0002] At present, the carbonization reaction in the pure alkaline production process is generally completed in the carbonized tower, low carbonization efficiency, low production capacity of single carbonation. At the same time, the tower generally uses traditional vertical tower structures, including bacterial hats tower, sieve tower, etc., the traditional tower has the following deficiencies: [0003] 1. The material quality of the tower is mainly cast iron, the quality of the equipment, the installation is difficult, and the pressure is not resistant to ammonium, ammonium, salt corrosion, short service life, and the single equipment has a small production capacity; [0004] 2, during the production process, due to equipment corrosion, it is easy to cause exceeding the standard in the product, a...

Claims

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Application Information

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IPC IPC(8): C01D7/00C01D7/12C01D7/16C01D7/18
CPCC01D7/00C01D7/126C01D7/16C01D7/18Y02P20/141
Inventor 丁喜梅吕明远陈福连罗红兵张玉萍常平
Owner HENAN ZHONGYUAN CHEM