An environmentally friendly silicate refining device

Abstract

The invention discloses an environment-friendly silicate refining device, comprising a hydrochloric acid tank, wherein the hydrochloric acid tank is connected with a refining tank through a hydrochloric acid inlet pipe, the refining tank is connected with a chlorine-type anion exchange column through a hydrochloric acid outlet pipe, the chlorine-type anion exchange column is respectively connected with a pure water cleaning inlet pipe and a pure water cleaning outlet pipe, the refining tank is also connected with a pure water inlet pipe, metal salts in industrial fine-pore silica gel are immersed in the flow of hydrochloric acid so that complex anions of the metal salts enter the solution, thereby refining the silica gel, the complex anion hydrochloric acid solution of the metal salts is exchanged with a chlorine-type anion resin to regenerate a hydrochloric acid solution, the anion resin containing the metal salts is regenerated after being washed with pure water flow, the preparation efficiency is high, the effect is good, energy saving and environmental protection are achieved, the resource reuse can be realized, the preparation principle is simple, and it is worthy of promotion.

Description

Technical Field

[0001] The invention relates to the field of silicate production, in particular to an environmentally friendly silicate refining device. Background Art

[0002] Among chemical reagents, the production of silicates, fluorosilicates, silicic acid and other products cannot do without high-quality silicon dioxide with less impurities, but the purity of refined quartz sand produced naturally is difficult to meet the quality requirements of reagent production. In particular, the silicic acid, silicates, fluorosilicic acid required by the electronics industry, and fluorosilicates required by optical glass, etc., the traditional silicic acid raw materials have many impurities, the refining effect is not good, the resource cost is high, and the environmental cost is high. Therefore, an environmentally friendly silicic acid refining device is needed. Summary of the invention

[0003] The object of the present invention is to provide an environmentally friendly silicate refining device to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An environmentally friendly silicate refining device comprises a hydrochloric acid tank, wherein the hydrochloric acid tank is connected to a refining tank through a hydrochloric acid inlet pipe, the refining tank is connected to a chlorine-type anion exchange column through a hydrochloric acid outlet pipe, the chlorine-type anion exchange column is respectively connected to a pure water cleaning inlet pipe and a pure water cleaning outlet pipe, the refining tank is also connected to a pure water inlet pipe, the refining tank is connected to an alkali neutralization tank through a pure water outlet pipe, the pure water cleaning outlet pipe is connected to the alkali neutralization tank, the alkali neutralization tank is connected to a waste water pipe, the chlorine-type anion exchange column is connected to a liquid pump through a hydrochloric acid purification outlet pipe, the output end of the liquid pump is connected to the hydrochloric acid tank, and valves are installed on the hydrochloric acid inlet pipe, the pure water inlet pipe, the hydrochloric acid output pipe, the pure water outlet pipe, the waste water pipe, the pure water cleaning inlet pipe and the pure water cleaning outlet pipe.

[0006] As a further solution of the present invention: the hydrochloric acid tank is a high-position tank, and the height of the hydrochloric acid tank is higher than that of the refining tank.

[0007] As a further solution of the present invention: the concentration of hydrochloric acid in the hydrochloric acid tank is 15-25%.

[0008] As a further solution of the present invention: the chloride-type anion exchange column is a resin column.

[0009] As a further solution of the present invention: the refining tanks are divided into 5-7 groups, the inlet of the front group of refining tanks is connected to the pure water inlet pipe, the outlet of the front group of refining tanks is connected to the inlet of the rear group of refining tanks through the middle pure water pipe, and the refining tanks of the last group are connected to the alkali neutralization tank through the pure water outlet pipe.

[0010] As a further solution of the present invention: transparent observation windows are installed outside the refining tank and the chloride-type anion exchange column.

[0011] As a further solution of the present invention: the valve is a flow control valve.

[0012] As a further solution of the present invention: the liquid pump adopts a polytetrafluoroethylene pneumatic diaphragm pump.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides an environmentally friendly silicate refining device, the metal salt in the industrial fine-pored silica gel is immersed in the flow of hydrochloric acid so that the complex anions of the metal salt enter the solution, thereby refining the silica gel, the complex anion hydrochloric acid solution of the metal salt is exchanged with a chlorine-type anion resin to regenerate a hydrochloric acid solution, and the anion resin containing the metal salt is regenerated after being washed with pure water flow, the preparation efficiency is high, the effect is good, energy saving and environmental protection can be achieved, the resource reuse can be realized, the preparation principle is simple, and it is worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the process structure of an environmentally friendly silicate refining device;

[0015] Figure 2 This is a schematic diagram of the pure water outlet pipe connection structure of an environmentally friendly silicate refining device.

[0016] In the figure: 1-pure water cleaning outlet pipe, 2-chlorine type anion exchange column, 3-hydrochloric acid output pipe, 4-valve, 5-pure water inlet pipe, 6-hydrochloric acid inlet pipe, 7-liquid pump, 8-hydrochloric acid tank, 9-refining tank, 10-pure water cleaning inlet pipe, 11-pure water outlet pipe, 12-hydrochloric acid purification outlet pipe, 13-alkali neutralization tank, 14-waste water pipe. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figures 1-2The present invention provides a technical solution: an environmentally friendly silicate refining device, comprising a hydrochloric acid tank 8, wherein the hydrochloric acid tank 8 is connected to a refining tank 9 through a hydrochloric acid inlet pipe 6, wherein the refining tank 9 is connected to a chlorine-type anion exchange column 2 through a hydrochloric acid output pipe 3, wherein the chlorine-type anion exchange column 2 is respectively connected to a pure water cleaning inlet pipe 10 and a pure water cleaning outlet pipe 1, wherein the refining tank 9 is also connected to a pure water inlet pipe 5, wherein the refining tank 9 is connected to an alkali neutralization tank 13 through a pure water outlet pipe 11, wherein the pure water cleaning outlet pipe 1 is connected to the alkali neutralization tank 13, wherein the alkali neutralization tank 13 is connected to a waste water pipe 14, wherein the chlorine-type anion exchange column 2 is connected to a liquid pump 7 through a hydrochloric acid purification outlet pipe 12, wherein an output end of the liquid pump 7 is connected to the hydrochloric acid tank 8, wherein valves 4 are installed on the hydrochloric acid inlet pipe 6, the pure water inlet pipe 5, the hydrochloric acid output pipe 3, the pure water outlet pipe 11, the waste water pipe 14, the pure water cleaning inlet pipe 10 and the pure water cleaning outlet pipe 1.

[0019] The present invention is used to produce refined industrial fine-porous silica gel, which is a raw material for producing silicon-based products. Specifically, the reagent hydrochloric acid is diluted with pure water to a concentration of 15-25%, and the diluted hydrochloric acid is pumped into a hydrochloric acid tank 8 by a liquid pump 7 for standby use;

[0020] In the refining tank 9 with a false bottom, add the fine-porous silica gel to be refined, and level its surface, then open the valve 4 on the hydrochloric acid inlet pipe 6, put hydrochloric acid from the hydrochloric acid tank 8 into the refining tank 9, and after all the silica gel is submerged, adjust the valve 4 on the hydrochloric acid inlet pipe 6 to keep its acid inlet speed the same as the acid outlet speed of the hydrochloric acid outlet pipe 3 connected to the refining tank 9, and keep the liquid level in the refining tank 9 balanced, until the quality of the silica gel in the refining tank 9 meets the requirements, take a water sample to detect that there is no iron, and then close the valve 4 on the hydrochloric acid inlet pipe 6 and the valve 4 on the hydrochloric acid outlet pipe 3;

[0021] The hydrochloric acid containing metal salt flows out from the hydrochloric acid output pipe 3 connected to the refining tank 9, and after flowing through the chloride type anion exchange column 2, the hydrochloric acid is purified and pumped into the high-level tank by the liquid pump 7 for standby use. The hydrochloric acid after flowing through the chloride type anion exchange column is taken and the metal salt is detected. When iron appears, it means that the resin is saturated and the resin should be regenerated;

[0022] Open the valve 4 on the pure water inlet pipe 5 connected to the refining tank 9, and after the pure water submerges all the silica gel, adjust the valve 4 on the pure water inlet pipe 5 to keep the water inlet speed the same as the water outlet speed of the refining tank 9, and keep the liquid level in the refining tank 9 balanced, until the water outlet of the refining tank 9 is colorless, take a water sample to test the absence of chlorine, close the valve 4 on the pure water inlet pipe 5, and the pure water enters the alkali neutralization tank 13 from the pure water outlet pipe 11, and flows into the wastewater treatment system after being neutralized with alkali;

[0023] The refined silicic acid is taken out from the refining tank 9, centrifuged and dehydrated, and after passing the inspection, refined to obtain the raw material for producing silicon-based products.

[0024] Regeneration of resin: close the valve 4 on the hydrochloric acid output pipe 3 and the hydrochloric acid purification outlet pipe 12 connected to the chloride-type anion exchange column 2, open the valve 4 on the pure water cleaning inlet pipe 10 and the pure water cleaning outlet pipe 1, adjust the valve 4 to keep the resin in the column from being disturbed until the outlet water is colorless, close the pure water inlet and outlet valves, and the resin regeneration is completed. The resin regeneration wastewater flows into the alkali neutralization tank 13 and is discharged into the wastewater treatment system from the wastewater pipe 14.

[0025] The hydrochloric acid tank 8 is a high-position tank, and the height of the hydrochloric acid tank 8 is higher than the refining tank 9, which is convenient for injecting hydrochloric acid.

[0026] The hydrochloric acid concentration in the hydrochloric acid tank 8 is 15-25%, which is the optimal refining concentration.

[0027] The chloride-type anion exchange column 2 is a resin column, which is used for purifying hydrochloric acid, realizing the reuse of hydrochloric acid, and saving energy and being environmentally friendly.

[0028] The refining tanks 9 are divided into 5-7 groups, the inlet of the front group of refining tanks 9 is connected to the pure water inlet pipe 5, the outlet of the front group of refining tanks 9 is connected to the inlet of the rear group of refining tanks 9 through the middle pure water pipe, and the refining tanks 9 of the last group are connected to the alkali neutralization tank 13 through the pure water outlet pipe 11, which saves pure water consumption, reduces resource waste, reduces costs, and is energy-saving and environmentally friendly.

[0029] Obviously, the inlet of each group of refining tanks 9 is connected to the outlet of the hydrochloric acid tank 8 through the corresponding hydrochloric acid inlet pipe 6, and the outlet of each group of refining tanks 9 is connected to the acid inlet of the chloride-type anion exchange column 2 through the corresponding hydrochloric acid output pipe 3.

[0030] The refining tank 9 and the chloride-type anion exchange column 2 are both provided with transparent observation windows to facilitate observation of the liquid color during the refining process.

[0031] The valve 4 is a flow control valve, which is convenient for flow control.

[0032] The liquid pump 7 adopts a polytetrafluoroethylene pneumatic diaphragm pump, which has a long service life and will not stop. It can pump flowing liquids and transport some media that are not easy to flow.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An environmentally friendly silicate refining device, comprising a hydrochloric acid tank (8), characterized in that: The hydrochloric acid tank (8) is connected to a refining tank (9) via a hydrochloric acid inlet pipe (6), the refining tank (9) is connected to a chlorine-type anion exchange column (2) via a hydrochloric acid outlet pipe (3), the chlorine-type anion exchange column (2) is respectively connected to a pure water cleaning inlet pipe (10) and a pure water cleaning outlet pipe (1), the refining tank (9) is also connected to a pure water inlet pipe (5), the refining tank (9) is connected to an alkali neutralization tank (13) via a pure water outlet pipe (11), the pure water cleaning outlet pipe (12 ...2), the pure water cleaning outlet pipe (12) is connected to a chlorine-type anion exchange column (2) via a hydrochloric acid outlet pipe (3), the pure water cleaning outlet pipe (12) is connected to a chlorine-type anion exchange column (2) via a hydrochloric acid outlet pipe (3), the pure water cleaning outlet pipe (12) is connected to a chlorine-type anion exchange column (2) via a hydrochloric acid outlet pipe (3), the pure water cleaning outlet pipe (12) is connected to a chlorine-type anion exchange column (2) via a hydrochloric acid outlet pipe (3), the ) is connected to an alkali neutralization tank (13), the alkali neutralization tank (13) is connected to a wastewater pipe (14), the chlorine-type anion exchange column (2) is connected to a liquid pump (7) via a hydrochloric acid purification outlet pipe (12), the output end of the liquid pump (7) is connected to a hydrochloric acid tank (8), and valves are installed on the hydrochloric acid inlet pipe (6), the pure water inlet pipe (5), the hydrochloric acid output pipe (3), the pure water outlet pipe (11), the wastewater pipe (14), the pure water cleaning inlet pipe (10) and the pure water cleaning outlet pipe (1); The hydrochloric acid tank (8) is a high-position tank, and the height of the hydrochloric acid tank (8) is higher than that of the refining tank (9); The chloride-type anion exchange column (2) is a resin column.

2. The environmentally friendly silicate refining device according to claim 1, characterized in that: The concentration of hydrochloric acid in the hydrochloric acid tank (8) is 15-25%.

3. An environmentally friendly silicate refining device according to claim 2, characterized in that: The refining tanks (9) are divided into 5-7 groups, the inlet of the refining tanks (9) of the front group is connected to the pure water inlet pipe (5), the outlet of the refining tanks (9) of the front group is connected to the inlet of the refining tanks (9) of the rear group through the intermediate pure water pipe, and the refining tanks (9) of the rear group are connected to the alkali neutralization tank (13) through the pure water outlet pipe (11).

4. The environmentally friendly silicate refining device according to claim 3, characterized in that: The refining tank (9) and the chloride-type anion exchange column (2) are both provided with transparent observation windows.

5. The environmentally friendly silicate refining device according to claim 4, characterized in that: The valve is a flow control valve.

6. The environmentally friendly silicate refining device according to claim 5, characterized in that: The liquid pump (7) is a polytetrafluoroethylene pneumatic diaphragm pump.

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