Production process and application of silicon dioxide for choline chloride carrier

Abstract

The invention discloses a production process of silicon dioxide for choline chloride carriers, which comprises the following steps of seed crystal preparation, primary synthesis, secondary synthesis, semi-finished product preparation, final product preparation, screening to remove fine powder with the mesh number of more than 200 after the final product preparation is completed, and packaging in a vacuum negative pressure state to obtain the final product. In addition, the invention also discloses application of the silicon dioxide prepared by the preparation process as a choline chloride carrier. The silicon dioxide product prepared by the process is good in flowability, does not raise dust or cake in the choline chloride adsorption process, has outstanding adsorption performance, adsorbability and manufacturing cost which are obviously superior to those of an existing granular carrier, is good in flowability and dispersibility in premixed feed after adsorbing choline chloride, does not aggregate or cake, and the addition safety and the storage stability of choline chloride products are greatly improved, and the production operation environment is fundamentally improved.

Description

technical field

[0001] The invention relates to the technical field of silica preparation, in particular to a production process and application of silica for choline chloride carrier. Background technique

[0002] Choline is an indispensable basic component in animals. Most animals cannot meet their growth and development only by their own choline synthesis, and must be ingested from the outside world. As a feed additive for poultry and livestock, artificially synthesized choline chloride can stimulate the ovary to produce more eggs and litter, promote the absorption and synthesis of amino acids in poultry and livestock, enhance the physique and disease resistance of livestock and poultry, and promote their growth and development. Because choline chloride is a salt of choline, the molecule has a polar tendency, so it is very easy to absorb moisture, which brings certain difficulties to production, processing, storage and feeding, and is very easy to agglomerate and mildew, ...

Examples

Embodiment 1

[0025] A production process of silicon dioxide for choline chloride carrier.

[0026] Add 1200L of sodium silicate stock solution with a concentration of 1.6mol / L to the synthesis kettle, keep the stirring speed of the synthesis kettle at 98rpm, feed steam to raise the temperature to 50°C, and then add an appropriate amount of process water to adjust the concentration of the sodium silicate solution to 0.45mol / L. Then start to add 25% sulfuric acid at a rate of 1250L / h. When the pH value of the reaction solution is 10.0, stop adding acid for about 30 minutes. This stage is the seed crystal preparation process.

[0027] Then raise the temperature to 78-83°C, add 98% sulfuric acid and sodium silicate stock solution at the flow rate of 60L / h and 900L / h at the same time at this temperature for 40min, this is a one-step synthesis; then raise the temperature to 85 At ~90°C, add 98% sulfuric acid and sodium silicate stock solution for 30 minutes at the same time at a flow rate of 105...

Embodiment 2

[0045] A production process of silicon dioxide for choline chloride carrier.

[0046]Add 1200L of sodium silicate stock solution with a concentration of 1.6mol / L to the synthesis kettle, keep the stirring speed of the synthesis kettle at 35rpm, feed steam to raise the temperature to 60°C, and then add an appropriate amount of process water to adjust the concentration of the sodium silicate solution to 0.15mol / L, and then Start to add 25% sulfuric acid at a rate of 2500 L / h, and stop adding acid when the pH value of the reaction solution is 8.5, and the time is about 16 minutes. This stage is a rapid preparation process of seed crystals.

[0047] Then raise the temperature to 85-90°C, add 98% sulfuric acid and sodium silicate stock solution at the flow rate of 100L / h and 1500L / h at the same time at this temperature for 25min, this is a one-step synthesis; increase the stirring speed to 105rpm, Then raise the temperature to 90-95°C, and add 98% sulfuric acid and sodium silicate ...

Embodiment 3

[0065] A production process of silicon dioxide for choline chloride carrier.

[0066] Add 1500L of sodium silicate stock solution with a concentration of 1.6mol / L to the synthesis kettle, keep the stirring speed of the synthesis kettle at 105rpm, feed steam to raise the temperature to 90°C, then add an appropriate amount of process water, adjust the concentration of sodium silicate to 0.55mol / L, and then start Add 25% sulfuric acid at a rate of 1250L / h to 2500L / h. When the pH value of the reaction solution is 11.0, stop adding acid for about 27 minutes. This stage is the process of preparing seed crystals at high temperature.

[0067] Then add 98% sulfuric acid and sodium silicate stock solution at the flow rate of 60L / h and 900L / h at the same time at 87~93°C for 40min. Add 98% sulfuric acid and sodium silicate stock solution at a flow rate of h for 20 minutes, which is a two-stage synthesis.

[0068] Stop adding the sodium silicate stock solution, reduce the flow rate of 98%...

technical field

[0001] The invention relates to the technical field of silica preparation, in particular to a production process and application of silica for choline chloride carrier. Background technique

[0002] Choline is an indispensable basic component in animals. Most animals cannot meet their growth and development only by their own choline synthesis, and must be ingested from the outside world. As a feed additive for poultry and livestock, artificially synthesized choline chloride can stimulate the ovary to produce more eggs and litter, promote the absorption and synthesis of amino acids in poultry and livestock, enhance the physique and disease resistance of livestock and poultry, and promote their growth and development. Because choline chloride is a salt of choline, the molecule has a polar tendency, so it is very easy to absorb moisture, which brings certain difficulties to production, processing, storage and feeding, and is very easy to agglomerate and mildew, ...

Examples

Embodiment 1

[0025] A production process of silicon dioxide for choline chloride carrier.

[0026] Add 1200L of sodium silicate stock solution with a concentration of 1.6mol / L to the synthesis kettle, keep the stirring speed of the synthesis kettle at 98rpm, feed steam to raise the temperature to 50°C, and then add an appropriate amount of process water to adjust the concentration of the sodium silicate solution to 0.45mol / L. Then start to add 25% sulfuric acid at a rate of 1250L / h. When the pH value of the reaction solution is 10.0, stop adding acid for about 30 minutes. This stage is the seed crystal preparation process.

[0027] Then raise the temperature to 78-83°C, add 98% sulfuric acid and sodium silicate stock solution at the flow rate of 60L / h and 900L / h at the same time at this temperature for 40min, this is a one-step synthesis; then raise the temperature to 85 At ~90°C, add 98% sulfuric acid and sodium silicate stock solution for 30 minutes at the same time at a flow rate of 105...

Embodiment 2

[0045] A production process of silicon dioxide for choline chloride carrier.

[0046]Add 1200L of sodium silicate stock solution with a concentration of 1.6mol / L to the synthesis kettle, keep the stirring speed of the synthesis kettle at 35rpm, feed steam to raise the temperature to 60°C, and then add an appropriate amount of process water to adjust the concentration of the sodium silicate solution to 0.15mol / L, and then Start to add 25% sulfuric acid at a rate of 2500 L / h, and stop adding acid when the pH value of the reaction solution is 8.5, and the time is about 16 minutes. This stage is a rapid preparation process of seed crystals.

[0047] Then raise the temperature to 85-90°C, add 98% sulfuric acid and sodium silicate stock solution at the flow rate of 100L / h and 1500L / h at the same time at this temperature for 25min, this is a one-step synthesis; increase the stirring speed to 105rpm, Then raise the temperature to 90-95°C, and add 98% sulfuric acid and sodium silicate ...

Embodiment 3

[0065] A production process of silicon dioxide for choline chloride carrier.

[0066] Add 1500L of sodium silicate stock solution with a concentration of 1.6mol / L to the synthesis kettle, keep the stirring speed of the synthesis kettle at 105rpm, feed steam to raise the temperature to 90°C, then add an appropriate amount of process water, adjust the concentration of sodium silicate to 0.55mol / L, and then start Add 25% sulfuric acid at a rate of 1250L / h to 2500L / h. When the pH value of the reaction solution is 11.0, stop adding acid for about 27 minutes. This stage is the process of preparing seed crystals at high temperature.

[0067] Then add 98% sulfuric acid and sodium silicate stock solution at the flow rate of 60L / h and 900L / h at the same time at 87~93°C for 40min. Add 98% sulfuric acid and sodium silicate stock solution at a flow rate of h for 20 minutes, which is a two-stage synthesis.

[0068] Stop adding the sodium silicate stock solution, reduce the flow rate of 98%...