4、Packing quantity of products
Light Alkali: No pallets, 21 tons/525 bags, 40 kg; 420 bags, 50 kg; 1000kg bags, 20 tons in small cabinets and 15 tons in 750 kg bags.
18 tons pallet (40 kg or 25 kg are 18 tons) export is seldom palletized. The maximum loading capacity of small packages of soda ash is confirmed (21.5 tons for ammonia-alkali process, 21.52 tons for 25 kg and 21.52 tons for 40 kg) 60-65 tons for light soda by ammonia-alkali process for one railway car skin.
Heavy Alkali: No pallets, small cabinets 25 tons/500 bags, 50 kg (for domestic sales, 50 kg for Haihua, 26 tons 1000kg for 28 tons; Lianyungang Alkali Factory, 50 kg for 29 tons, small cabinets for 25 tons) 1000kg for bags, small cabinets for 25 tons, pallets for 22 tons. Exports rarely support.
Tank cars can be loaded with light soda ash 70/ cubic meters. 0.6 cubic meters of 1 cubic meters, about 40 tons, can not ensure the number of cans.
5、Purpose and description of products
Sodium carbonate is one of the important chemical raw materials, which is widely used in light industry, daily chemical industry, building materials, chemical industry, food industry, metallurgy, textile, petroleum, national defense, medicine and other fields. In industrial alkali, light industry, building materials and chemical industry account for about 2/3 of the total, followed by metallurgy, textile, petroleum, national defense and other industries.
1,The glass industry is a large consumer sector of soda ash, which consumes soda 0.2T per ton of glass.
It is mainly used for float glass, picture tube glass shell, optical glass, etc. In the glass with soda provides Na ion material, as a clarifying agent to eliminate glass bubbles in a liquid, and the thermal decomposition release of CO2 gas on glass volume plays a role in mixing furnace!
2,It can also be applied to other departments such as chemical industry and metallurgy.
Industrial sodium carbonate volatilizes and produces gas when it meets high temperature. It can mix metal liquid and use shell to desulfurize effectively with metallurgical calcium oxide. The use of heavy soda technology can reduce the flying of alkali dust, reduce the consumption of raw materials, improve the working conditions, improve the product quality, reduce the erosion of alkali powder on refractories and prolong the service life of kilns.
3,As a buffer, neutralizer and dough improver, it can be used in pastries and pasta products. It can be used in a proper amount according to production needs.
During the process of dough, microorganisms will form acid, and dough will turn sour after it is started. It must be neutralized with alkali to make delicious pasta.
4,It is used as detergent for wool rinsing, bath salts and medicine, and alkali in tanning.
Soda-soda solution is alkaline because of hydrolysis. Soda-soda solution can saponify with oil to form sodium fatty acid which can dissolve in water.
5,Soda for drilling
Soda can reduce the filtration rate, increase the viscosity and shear force of the new slurry, but excessive soda can cause clay particles to coagulate and damage the performance of drilling fluid. The appropriate amount in the period needs to be determined by slurry making experiments. In addition. When drilling cement plug or drilling fluid is invaded by calcium, adding appropriate soda to make Ca2+ precipitate into CaCOram can also improve drilling fluid performance.
6,Special reagent for color TV (less used now)
7,Anhydrous sodium carbonate is used for electrochemical and electrochemical degreasing, corrosion of electroless copper and aluminium plating, electrolytic polishing of chlorine and alloys, chemical oxidation of aluminium, sealing after phosphating, rust prevention between processes, electrolytic removal of chromium coating and chromium oxide film, etc. It is also used in pre-plating of copper, plating of steel alloy electrolyte.
8,Printing and dyeing industry as soft water agent
9,Leather industry is used for degreasing raw materials, neutralizing chrome tanning and improving the alkalinity of chrome tanning liquor.
10,Light soda ash can be used as filler for rubber.
11,In water treatment, lime soda is used to soften water quality. Lime is generally used to remove carbonate hardness in water and soda is used to remove non-carbonate hardness.
12,Production of hydroxymethyl cellulose from practical soda
13,Soda ash is used to produce sodium silicate.
Sodium silicate, petroleum silica (quartz sand), soda, (or soil alkali) melt in melting kiln
14,The main function of adding soda into cement mortar is drought, and it is also to stimulate slag of mixed material, so it can't be put more. Otherwise, the mortar strength will be lower.
15,Soda ash is used to produce sodium fluoride crystal.
Sodium fluoride production process from soda ash has the advantages of easy availability of raw materials, short process flow, less investment, no three wastes and less corrosiveness to equipment.
16,Supplementary use of edible alkali: 1. Jian water, also known as alkali water, also known as edible maple water, is a kind of compound food additive, is the material of food technology, Maple water is the traditional auxiliary material of Cantonese pastry, which is often added in the preparation of Cantonese moon cake dough. 2. According to the national standards of moon cakes, Maple water is used in the production of Cantonese moon cakes. This is the characteristic method of making Cantonese moon cakes. 3. Alkaline compounds are prepared by using potassium carbonate and sodium carbonate as the main ingredients, supplemented by carbonate or polyphosphate.
17,Soda is used as paper making.
In the process of pulping, soda is used as buffer to dissolve lignin slowly, so that cellulose can be dispersed into pulping. Paper making is to separate cellulose from lignin in wood. Lignin is phenylmethane with complex and stable structure and is not easy to decompose. It is difficult to decompose in alkaline strips. Under this condition, lignin can be transformed into methylene quinone structure, and conjugated double bonds can be generated, which is conducive to the next step of lignin removal (lignin dissolution) reaction.
18,Soda is used to make burning materials.
Burning material is a mixture of silicate containing rock powder and soda, plus pigment, heating and melting. A glassy object formed after cooling, similar to glass but having a lower melting point and less transparency (some opaque) to make utensils or handicrafts.
6、Implementation of quality standards
Industrial sodium carbonate implements the National Standard 210.1-2004 Class II of Industrial Sodium carbonate issued by the People's Republic of China, and the product quality has reached the international advanced level.

Food-grade sodium carbonate implements the "Food additive sodium carbonate GB1886.1-2015" standard issued by the People's Republic of China

7、Quality guarantee period
Food grade soda ash for 180 days
Light soda ash for 2 years
Supplementary: Sieve residue is a noun for measuring particles. If we use 200 mesh sieve, sieve a powder, 20% under the sieve and 80% above the sieve, then we call 80% of the powder sieve residue. To put it plainly, it is something above the sieve.
8、ph value
Light soda soda 11.6
Heavy soda ash 12-14
9、Brief introduction of production technology
At present, the soda process is mainly divided into natural soda method and synthetic method, and the synthetic method is divided into ammonia alkali method and combined alkali method.
China's soda ash technology is mature, and is one of the few three countries in the world. In addition, Japan's new Asahi law, Russia's nepheline caustic soda method, etc.
1天然碱
At present, only a few countries such as the United States, China, Turkey and Kenya have found natural alkali mines in the world, of which the Luhe Natural Alkali Mine in the United States is the most famous. The natural alkali deposits in the Green River area contain 42 beds of sodium sesquicarbonate. Even if all the alkali factories in the world stop producing, the American natural alkali can be used as the world's soda in 1300 years. The total reserves of natural alkali deposits in Tongbai County, Henan Province are 150 million tons, and the prospective reserves are between 350 million tons, accounting for 80% of the national natural alkali reserves, ranking first in Asia and second in the world. Inner Mongolia Yihua Group has established a chemical industry park with natural alkali as the main component in Tongbai. Its high-quality, low-salt and heavy soda design annual output reaches 1 million tons.
There are mainly three kinds of natural soda process.
a Half alkali process
Ore extraction dissolution clarification removing impurity circulating mother liquor three effect vacuum crystallization -240 degree calcination
b Brine carbonization process
Natural brine-carbonization tower is carbonized into heavy alkali-drying-calcination to crude alkali-bleaching-calcination with sodium nitrate at 155 degrees. Carbon dioxide for calcination is provided by self-owned power plant.
c Monohydrate process
Ore mining - crushing to less than 7 cm - 200 degrees and remaining for 30 minutes - crude alkali - dissolution, clarification - three-effect vacuum crystallization - 240 degrees calcination
Introduction of 2 ammonia alkali process ：
Ammonia-alkali process makes the production continuous, the utilization ratio of salt is improved, and the product quality is pure. Therefore, the product is called soda ash. It is made of salt, limestone (lime and carbon dioxide from calcination), ammonia gas as raw materials.
First, ammonia gas is injected into saturated salt water to form ammonia salt water, and then carbon dioxide is injected to form sodium bicarbonate precipitation and ammonium chloride solution with less solubility. Its chemical reaction principle is
NaCl＋NH3＋H2O＋CO2＝NaHCO₃↓＋NH4CI
Soda lime crystals were obtained by heating and calcining NaHCO - crystals after filtration and washing. 2 NaHCO = Na2CO3 + H2O + CO2↑ carbon dioxide emission can be recycled. When the filtrate containing ammonium chloride is heated with lime milk {Ca(OH)2}, the released ammonia gas can be recycled.
CaO＋H2O＝Ca（OH）2, 2NH4CI＋Ca（OH）2＝CaCI2＋2NH3↑＋2H2O
Production process diagram of ammonia soda process

It is recommended that employees read pictures and understand words.
Introduction of combined alkali process
Ammonia-alkali process and synthetic ammonia process are combined to produce soda ash and ammonium chloride at the same time. He retained the advantages of ammonia-alkali process and eliminated its shortcomings. The utilization rate of salt was increased by 96%. The raw materials were salt, ammonia and carbon dioxide-mdash; & mdash; the exhaust gas of ammonia plant when water gas was used to produce hydrogen. The principle of chemical reaction is C＋H2O＝CO＋H2、
CO＋H2O＝CO2＋H2
The combined alkali process consists of two processes.
The first process is the same as that of ammonia-alkali process. The ammonia gas is fed into saturated salt water, too carbon dioxide is fed into it to form sodium bicarbonate precipitation. The NaHCO ram microcrystal is obtained by filtration and washing. The soda product is prepared by calcination. The filtrate is a solution containing ammonium chloride and sodium chloride. The second process is from a solution containing ammonium chloride and sodium chloride. Ammonium chloride crystals are precipitated from intermediate crystals. At low temperature, ammonium chloride can be precipitated separately by adding fine powdered sodium chloride into the filtrate and feeding ammonia gas. Ammonium chloride products can be obtained by filtration, washing and drying. At this point, the solution obtained after precipitation of ammonium chloride is basically saturated with sodium chloride and can be recycled.
Soda soda and ammonium chloride convert carbon dioxide from waste gas of ammonia plant into the main raw material of alkali plant to produce soda, thus saving the amount of limestone used to produce carbon dioxide in alkali plant, replacing the useless component chloride ion of alkali plant with ammonia in fixed ammonia plant of high price sulfuric acid to produce ammonium chloride as nitrogen fertilizer. It will no longer produce calcium chloride, which is not as hard as it can be used. Environmental pollution has been reduced. And reduced it. The cost of soda ash and nitrogen fertilizer fully reflects the superiority of large-scale joint production.
Production process diagram of combined alkali process

Advantages and disadvantages of two production processes
Advantages of ammonia soda method for soda ash extraction
1,Raw material: soda is produced by ammonia alkali method, and raw materials are widely used.
2,Purity: soda produced by ammonia alkali method, with high purity.
3,Production capacity: soda ash produced by ammonia soda process can be continuously produced and has strong production capacity.
Shortcoming：NaCl Low utilization rate
2Abundant raw salt, limestone, coal, water and other resources are needed, and a large amount of waste residue and waste liquor < br /> should be discharged. Advantages of combined alkali process
1Utilization rate: high utilization rate of raw materials, both producing soda ash and producing ammonium chloride.
2Production Input Cost: Production process does not require the use of limestone, coke, can effectively reduce the cost of production input.
3Equipment Input Cost: No heavy equipment such as ammonia distillation ash machine is needed in soda plant, which not only reduces the process steps, but also reduces the equipment input cost.
4Environmental protection: Alkali process basically closed the cycle, a small amount of waste liquid discharged, will not have a large number of waste liquid and residue discharged, can be produced in the mainland alkali plant, more conducive to sales
shortcoming
CO production of ammonium chloride is easy to be restricted by agricultural development and compound fertilizer industry.
10、Test method for soda ash
1Dry-base method is generally used in soda plant, but many enterprises use wet-base method. Dry-base method (ammonia-alkali method) can reach 99.3-99.4% of the content of soda. The method of wet-base and dry-base calculation can be different by several percentage points.
2Soda ash is generally classified into premium and first grade products. The highest grade is 99.2, and the first grade is 99.8.