CN214763075U - Processing device of organosilicon sediment thick liquid - Google Patents
Processing device of organosilicon sediment thick liquid Download PDFInfo
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- CN214763075U CN214763075U CN202022979692.2U CN202022979692U CN214763075U CN 214763075 U CN214763075 U CN 214763075U CN 202022979692 U CN202022979692 U CN 202022979692U CN 214763075 U CN214763075 U CN 214763075U
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Abstract
A disposal device for organic silicon slag slurry belongs to the technical field of environmental protection. The organic silicon slag slurry ton barrel is connected with a hydrolysis reaction kettle through a feeding hose and a feeding pump, a gas outlet at the top of the hydrolysis reaction kettle is connected with a purification tower 1# through a first ventilation pipeline, and an overflow port on the side surface of the hydrolysis reaction kettle is connected with a centrifugal machine through an overflow pipe; the upper part and the lower part of the purification tower 1# are connected through a washing pump to form a washing circulating system; the gas outlet at the top of the purification tower 1# is connected with the purification tower 2# through a second vent pipe, the upper part and the lower part of the purification tower 2# are connected through an alkaline washing pump to form an alkaline washing circulating system, and the gas outlet at the top of the purification tower 2# is connected with a chimney through a third vent pipe via a fan. The production and disposal cost is reduced, and economic benefits are created.
Description
Technical Field
The utility model belongs to the technical field of the environmental protection, a organosilicon sediment thick liquid is dealt with is related to.
Background
The organic silicon slurry residue is a solid-liquid mixture with fluidity obtained by adopting a wet dust removal process in the synthesis process of the organic silicon monomer, the density is 1.2-1.8 g/cm3 at normal temperature and normal pressure, and the boiling point is 80-215 ℃. The main component of the liquid phase is high boiling point substance, more than 30 kinds of silane mixture mainly comprising Si-Si and Si-C-Si, which is black at normal temperature and normal pressure, has pungent smell and strong corrosivity; the solid phase is mainly fine particles of suspended silicon powder, carbon, copper and other metals.
The organic silicon slurry slag belongs to hazardous waste, wherein high-boiling-point substances are flammable and explosive and have certain volatility, if the materials are exposed in the air, the materials are easy to combust and react with the air to form strong acid mist, and serious environmental protection problems and potential safety hazards exist.
At present, the organic silicon slag slurry disposal method mainly comprises a high-temperature cracking method, a catalytic cracking method, an incineration method and a hydrolysis method, wherein the high-temperature cracking method has higher reaction temperature and serious carbon deposition; some catalysts of the catalytic cracking method are expensive and cannot crack all components; the burning method has large demand on the organic silicon slag slurry, large early-stage construction investment and higher operation cost, and has no feasibility. The hydrolysis method has the advantages of small investment, low operation cost, simple and easily obtained hydrolysis condensing agent and great advantages.
The utility model has the following contents:
the utility model provides a disposing device for organic silicon slag slurry for solving the problems
The organic silicon slag slurry treatment device is characterized in that an organic silicon slag slurry ton barrel (1) is connected with a hydrolysis reaction kettle (4) through a feed hose (2) and a feed pump (3), a stirring device (5) is arranged in the hydrolysis reaction kettle (4), the hydrolysis reaction kettle (4) is connected with a production water pipe (6), a gas outlet at the top of the hydrolysis reaction kettle (4) is connected with a purification tower 1# (9) through a first vent pipeline (18), and an overflow port on the side surface of the hydrolysis reaction kettle (4) is connected with a centrifuge (8) through an overflow pipe (7); the upper part and the lower part of the purification tower 1# (9) are connected through a washing pump (10) to form a washing circulating system; a gas outlet at the top of the purification tower 1# (9) is connected with a purification tower 2# (11) through a second vent pipeline (19), the upper part and the lower part of the purification tower 2# (11) are connected through an alkaline washing pump (12) to form an alkaline washing circulating system, and a gas outlet at the top of the purification tower 2# (11) is connected with a chimney (14) through a third vent pipeline (20) and a fan (13);
the water washing circulation system and the alkali washing circulation system are respectively converged through a second pipeline and a third pipeline to carry out neutralization reaction, and meanwhile, the water washing circulation system is connected with the hydrolysis reaction kettle (4) through a first pipeline to carry out partial reflux.
The filtrate outlet of the centrifuge (8) is connected with the hydrolysis reaction kettle (4) and the filtrate is partially recycled.
The hydrolysis reaction mechanism of the organic silicon slag slurry is as follows:
the organosilicon slurry mainly contains silicon powder, methyl chlorosilane oligomer, elementary copper and the like. The methylchlorosilanes oligomers consist essentially of R3SiCl、R2SiCl2、RSiCl3(R is alkyl, aryl, alkenyl, aralkyl, alkaryl). Under the acidic condition, the methylchlorosilane is very easy to generate hydrolysis reaction with water. The reaction mechanism is that the methyl chlorosilane and water are subjected to hydrolysis reaction to generate hydrogen chloride and corresponding silanol, and the reaction equation is as follows:
R3SiCl+H2O——→R3SiOH+HCl↑
R2SiCl2+2H2O——→R2Si(OH)2+2HCl↑
RSiCl3+3H2O——→RSi(OH)3+3HCl↑
r is alkyl, aryl, alkenyl, aralkyl, alkaryl.
The silanol is unstable and undergoes condensation reaction dehydration under acidic conditions to generate stable siloxane (namely copper-containing silicon slag) with corresponding functions. The reaction formula is as follows:
drawings
FIG. 1 is a structural view of a treating apparatus for silicone sludge.
Organosilicon sediment thick liquid ton bucket (1), feeding hose (2), charge-in pump (3), hydrolysis reaction kettle (4), agitating unit (5), water pipe (6) for the production, overflow pipe (7), centrifuge (8), purge tower 1# (9), washing pump (10), purge tower 2# (11), alkali wash pump (12), fan (13), chimney (14), first pipeline (15), second pipeline (16), third pipeline (17), first breather pipe (18), second breather pipe (19), third breather pipe (20).
Detailed Description
The present invention will be further described with reference to the following examples, but the present invention is not limited to the following examples.
Example 1
The specific structure is shown in figure 1.
The treatment of the organic silicon slag slurry by adopting the device comprises the following steps:
(1) the organosilicon slag slurry is barreled by ton and pumped into a hydrolysis reaction kettle filled with a hydrolysis condensing agent through a pump connected with a hose.
(2) Waste hydrochloric acid generated by hydrolysis and production water are prepared into a hydrolysis condensing agent with 13 percent of salt acid content according to a certain proportion, and the hydrolysis condensing agent and the organic silicon slag slurry are subjected to hydrolysis reaction in a hydrolysis reaction kettle.
(3) Carrying out hydrolysis condensation reaction on the organic silicon slag slurry and a hydrolysis condensation agent in a hydrolysis reaction kettle for about 60min, continuously stirring by a stirring pump during the reaction to ensure that the reaction is complete, controlling the reaction temperature to be between 40 and 60 ℃, and heating the reaction kettle by a steam coil if the reaction temperature is too low; if the reaction temperature is too high, a circulating water pipe is adopted for cooling, and meanwhile, the adding amount of the organic silicon slag slurry is reduced.
(4) And (3) performing solid-liquid separation on the solid-liquid mixture after the hydrolysis reaction in a centrifugal machine, burning the centrifuged silicon slag in a burning workshop, and preparing the centrifuged filtrate (hydrochloric acid with the concentration of 8-10%) into a hydrolysis condensing agent or performing neutralization treatment.
(5) The hydrolysis reaction kettle is in negative pressure, acid gas generated in the reaction process is washed by water through a purification tower 1#, the washed waste hydrochloric acid and the production water are mixed to prepare a hydrolysis condensing agent, and the hydrolysis condensing agent is returned to the hydrolysis reaction kettle for recycling.
(6) And after the tail gas treated by the purification tower 1# is treated by the purification tower 2# alkaline washing, the tail gas is discharged through a chimney with the diameter of 15m after reaching the standard.
(7) And (4) sending the waste alkali liquor washed by the No. 2 water of the purifying tower to a materialization workshop for materialization treatment.
Hydrogen chloride gas generated by hydrolyzing the organic silicon slag slurry is washed by water and absorbed and then is reused as a hydrolysis condensing agent; the hydrolyzed silicon slag is incinerated, and the filtrate is used as a hydrolysis condensing agent for recycling or neutralization treatment.
According to the method, hydrochloric acid is used as a hydrolysis condensing agent to hydrolyze the organic silicon slag slurry, the hydrolyzed silicon slag and filtrate have stable properties, the safety risk is greatly reduced, and the method is an effective process for treating the organic silicon slag slurry.
The organic silicon slag slurry treatment device is suitable for treating and treating small and medium organic silicon slag slurries, and can further reduce the production and treatment cost and create economic benefits if a matched waste alkali liquid materialization system, a filter residue incineration system and a filtrate treatment system are provided.
Claims (3)
1. The organic silicon slag slurry treatment device is characterized in that an organic silicon slag slurry ton barrel (1) is connected with a hydrolysis reaction kettle (4) through a feed hose (2) and a feed pump (3), a stirring device (5) is arranged in the hydrolysis reaction kettle (4), the hydrolysis reaction kettle (4) is connected with a production water pipe (6), a gas outlet at the top of the hydrolysis reaction kettle (4) is connected with a purification tower 1# (9) through a first vent pipeline (18), and an overflow port on the side surface of the hydrolysis reaction kettle (4) is connected with a centrifuge (8) through an overflow pipe (7); the upper part and the lower part of the purification tower 1# (9) are connected through a washing pump (10) to form a washing circulating system; the gas outlet at the top of the purification tower 1# (9) is connected with the purification tower 2# (11) through a second vent pipe (19), the upper part and the lower part of the purification tower 2# (11) are connected through an alkaline washing pump (12) to form an alkaline washing circulating system, and the gas outlet at the top of the purification tower 2# (11) is connected with a chimney (14) through a third vent pipe (20) and a fan (13).
2. The device for treating the organosilicon slurry as claimed in claim 1, wherein the water washing circulation system and the alkali washing circulation system are respectively gathered through the second pipeline and the third pipeline for neutralization reaction, and the water washing circulation system is connected with the hydrolysis reaction kettle (4) through the first pipeline for partial reflux.
3. The apparatus for treating organosilicon slurry as claimed in claim 1, wherein the filtrate outlet of the centrifuge (8) is connected to the hydrolysis reactor (4) for recycling the filtrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202022979692.2U CN214763075U (en) | 2020-12-10 | 2020-12-10 | Processing device of organosilicon sediment thick liquid |
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| CN202022979692.2U CN214763075U (en) | 2020-12-10 | 2020-12-10 | Processing device of organosilicon sediment thick liquid |
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