Energy-saving production method for layered crystal sodium disilicate

A technology of sodium disilicate and layered crystallization, which is applied in the direction of silicate, alkali metal silicate, energy input, etc., can solve the problem that washing powder cannot be used for ingredients in products, there is no heat storage device in the crystallization furnace, and the heat preservation and sealing layer is not good. Strict and other issues, to achieve the effect of adapting to clean production, reducing kiln exhaust gas emissions, and avoiding waste
CN101412518AInactive Publication Date: 2009-04-22SHANDONG SNTON GROUP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANDONG SNTON GROUP CO LTD
Publication Date
2009-04-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an energy-saving process for producing layered crystal sodium disilicate in the field of the process for producing a washing assistant. The process is as follows: (1) the dust content of coal gas is controlled to less than or equal to 50 mg / m<3>, the temperature is controlled to between 30 and 40 DEG C, and the pressure is controlled to between 0.2 and 0.3 MPa; (2) the concentration of a solution is controlled to between 40 and 45 percent, and settled dreg is filtered after dissolution is over; (3) a module adjusting agent is added into the mixture to adjust the mixture to the required module, the mixture is subjected to spray drying and dehydration, and the moisture mass ratio of the produced instant sodium silicate is between 9 and 12 percent; and (4) the temperature of a high-temperature crystal oven is between 600 and 900 DEG C, the gas exhaust temperature is between 500 and 600 DEG C, the crystallization time is kept to between 8 and 15 minutes, and high-temperature crystalline substances which are discharged from the crystal oven are crushed and cooled and the granularity of the high-temperature crystalline substances is controlled to less than 100 meshes. The process adopts the method of replacing high-cost fuel by low-cost fuel to reduce the production cost, utilizes recovery of waste heat of the crystal oven to save the energy and reduce exhaust emission and the cost, and technically reaches the domestic advanced level.
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Description

technical field

[0001] The invention relates to an energy-saving production process of layered crystalline sodium disilicate in the field of washing aid production process. Background technique

[0002] At present, there are two production methods of layered crystalline sodium disilicate, one is high-pressure solution crystallization, and the other is high-temperature sintering crystallization. The advantage of high-pressure solution crystallization is the high purity of the product, but the disadvantages are high investment in equipment, low production efficiency, and difficulty in controlling the degree of crystallization, which is not suitable for industrial production. The high-temperature sintering and crystallization method is to spray-dry the sodium silicate solution with a suitable modulus to make powdery instant powder, and then send it to the crystallization kiln for high-temperature sintering and crystallization to obtain granular layer silicon, which is then crus...

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
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