Heavy alkali production method
A production method and technology of heavy alkali, applied in chemical instruments and methods, alkali metal compounds, alkali metal carbonates, etc., can solve problems such as crystal damage, crystal distribution is not concentrated, crystal slurry is not sufficiently stirred, and achieves scrubbing Clean and increase the service life effect
Active Publication Date: 2019-03-08
南京六合高新建设发展有限公司
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Problems solved by technology
[0005] In order to make up for the deficiencies of the existing technology and solve the problems of insufficient stirring of crystal slurry, untimely steam replenishment, unconcentrated distribution of crystals, and damage to crystals, the present invention proposes a production method of heavy alkali
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[0042] As an embodiment of the present invention, the upper and lower surfaces of the No. 1 pressing plate 2 and No. 2 pressing plate 3 are arc-shaped. The upper and lower surfaces of the No. 1 pressing plate 2 and No. 2 pressing plate 3 are arc-shaped structures, so that the crystal grains in the crystallizing furnace 1 are more concentrated during the sliding process of the No.
[0043] As an embodiment of the present invention, a No. 1 brush 21 is provided on the outer circumference of the No. 1 pressing plate 2 and No. 2 pressing plate 3 . When working, the No. 1 pressure plate 2 and the No. 2 pressure plate 3 slide up and down, and the No. 1 brush 21 on the outer circumference of the No. 1 pressure plate 2 and the No. 2 pressure plate 3 can brush the crystals on the side wall of the crystallizing furnace 1 to carry out the crystallizing furnace. 1 The role of sidewall cleaning.
[0044] As an embodiment of the present invention, the brush lines of the No. 1 brush 21 on t...
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The invention belongs to the technical field of chemical engineering, and particularly relates to a heavy alkali production method. Natural alkali is calcined and decomposed to obtain coarse alkali; the calcining temperature is controlled to be 180 to 200 DEG C; the obtained coarse alkali is conveyed into a dissolving tank; water is sprayed into the dissolving tank through a spray head, so that the coarse alkali is dissolved to obtain coarse alkali liquid; the coarse alkali liquid is conveyed into an intermittent operation setting tank for clarification; then, filtering is performed for removing impurities in the coarse alkali liquid; next, active carbon is used for removing organic matters in the coarse alkali liquid; fine alkali liquid is prepared; the obtained alkali liquid is conveyedinto a heavy pure alkali efficient crystallization production device to obtain alkali monohydrate; the alkali monohydrate is dehydrated and dried; the drying temperature is controlled to be 140 DEG C;the water content is attentively controlled to be smaller than 5 weight percent; heavy alkali is obtained.
Description
technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a heavy alkali production method. Background technique [0002] Soda ash scientific name sodium carbonate, also known as soda, soda ash, white powder or droplets, chemical formula Na 2 CO 3 , the relative molecular mass is 105.989. There are two main types of soda ash products, namely heavy soda ash (heavy ash) and light soda ash (light ash). The difference in specifications is mainly due to the difference in physical properties such as bulk density, particle size and shape. Generally, the density of light soda ash is 0.5~0.6g / ml; the density of heavy soda ash is 1.0~1.2g / ml. [0003] The main production methods of heavy soda ash are respectively solid phase hydration method, liquid phase hydration method and extrusion method with light soda ash as raw material; ). [0004] The trona is calcined and decomposed to obtain the crude alkali, the obtained cr...
Claims
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IPC IPC(8): C01D7/24C01D7/35
CPCC01D7/24C01D7/35C01P2006/80
Inventor 不公告发明人
Owner 南京六合高新建设发展有限公司