CN210754326U - Waste contact body and slurry slag treatment system generated in organic silicon production process - Google Patents
Waste contact body and slurry slag treatment system generated in organic silicon production process Download PDFInfo
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- CN210754326U CN210754326U CN201921835976.5U CN201921835976U CN210754326U CN 210754326 U CN210754326 U CN 210754326U CN 201921835976 U CN201921835976 U CN 201921835976U CN 210754326 U CN210754326 U CN 210754326U
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Abstract
The utility model belongs to the technical field of waste treatment, in particular to a waste contact body and slurry slag treatment system generated in the production process of organic silicon; the device comprises a mechanical activation device, a reactor, a washing reactor, a displacement reactor, a rotary kiln, a hydrolysis reactor and a crystallization evaporation device, wherein the feeding end of the mechanical activation device is connected with outlets of materials and waste hydrochloric acid, the discharging end of the mechanical activation device is connected with the reactor, the reactor is respectively connected with the washing reactor and the displacement reactor, the washing reactor is connected with the rotary kiln, the displacement reactor is connected with the hydrolysis reactor, and the tail end of the hydrolysis reactor is connected with the crystallization evaporation device; the technology is mature, short in flow, high in efficiency, beneficial to large-scale treatment, free of three-waste discharge and capable of avoiding secondary pollution to the environment, and accordingly green treatment of waste contacts and pulp residues is achieved.
Description
Technical Field
The utility model belongs to the technical field of the waste processing, concretely relates to useless touch body, thick liquid sediment processing system that produce in the organosilicon production process.
Background
In the production process of the organic silicon, silicon and chloromethane are used as production raw materials, and a ternary copper catalyst (main catalyst) and zinc (auxiliary agent) are commonly used for promoting the synthesis of organic silicon monomers such as dimethyldichlorosilane, methyltrichlorosilane, trimethylchlorosilane, methyldichlorosilane and the like. During the synthesis process, slurry and waste contacts are generated.
The main components of the waste contact body are silicon, copper, carbon, zinc and the like, and the weight contents of the silicon, the copper, the carbon, the zinc and the like in the waste contact body are respectively 65% -80%, 3% -20%, 1% -10% and 0.05% -2.0%. The waste contact bodies have fine particles and high activity of copper powder, so that oxidation reaction is easy to occur when the waste contact bodies meet air, organic substances and carbon in the waste contact bodies are burnt to emit pungent white smoke, and the waste contact bodies are difficult to store; the slurry residue is a liquid-solid mixture with fluidity obtained by a wet dust removal process in the process of synthesizing methyl chlorosilane by a direct method, is hydrolyzed into black solid powder, contains about 1 to 3 percent of copper, has serious environmental pollution and has the serious problem of three wastes.
The prior waste contact body treatment methods comprise three methods: the air oxidation method, the oxidant oxidation method and the acidification method all have the problems of low silicon recovery rate, serious water pollution, difficult realization of industrialization and the like. The slurry and the slag have no systematic research, and are mostly treated by burning and then burying at present.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a useless touch, thick liquid sediment processing system that produce in the organosilicon production process, this technique is ripe, the flow is short, efficient, do benefit to the scale and handle, and no three wastes are discharged, avoid producing secondary pollution to the environment to realize the green of useless touch and thick liquid sediment and handle.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the waste contact body and slurry residue treatment system produced in the production process of organic silicon comprises a mechanical activation device, a reactor, a washing reactor, a displacement reactor, a rotary kiln, a hydrolysis reactor and a crystallization evaporation device, wherein the feeding end of the mechanical activation device is connected with a material outlet and a waste hydrochloric acid outlet, the discharging end of the mechanical activation device is connected with the reactor, the reactor is respectively connected with the washing reactor and the displacement reactor, the washing reactor is connected with the rotary kiln, the displacement reactor is connected with the hydrolysis reactor, and the tail end of the hydrolysis reactor is connected with the crystallization evaporation device.
Furthermore, a circulating pipeline is arranged on a pipeline for connecting the washing reactor and the rotary kiln, and the tail end of the circulating pipeline is connected between the mechanical activation device and the reactor.
Further, the rotary kiln circumference parcel is provided with the heat transfer sleeve, and heat transfer sleeve bottom is provided with inlet and impurity export, and the top is provided with the liquid outlet, all is provided with the valve on inlet, impurity export and the liquid outlet.
Further, the height of the liquid inlet is higher than that of the impurity outlet.
Further, the outer wall of the heat exchange sleeve is wrapped with a shading cotton layer.
The utility model discloses an application procedure does:
the method comprises the following steps:
1) feeding and filtering: obtaining copper-containing silicon powder about 8% with useless contact and thick liquid sediment through reasonable batching, earlier through mechanical activation device 1 back, pump into reactor 2, add the waste hydrochloric acid of 15% in the organosilicon production process, under the circumstances of stirring, the oxidizing atmosphere of air control process is blown in to the oxidizing atmosphere, and the volume that the air was blown in to the oxidizing atmosphere is: 50L/H, slowly adding an additive A and an additive B, wherein the additive A is a dispersing agent, and the addition amount of the additive A is 50kg per ton of material; the additive B is a surfactant, the addition amount of the additive B is 10kg per ton of the material, and the filtering can be carried out after 3 hours of leaching;
2) and (3) leachate treatment: adding 2 times of reduced iron powder of copper into the leachate to replace the copper, filtering to obtain a sponge copper product, adding a neutralizing agent into the replaced leachate to recover valuable elements such as iron, zinc and the like, wherein the neutralizing agent is sodium carbonate or caustic soda, and piling up or selling iron ore concentrate obtained by filtering;
3) leaching silicon powder treatment: the leached silicon powder is subjected to secondary washing and filtering by waste hydrochloric acid, and then is washed by adding clean water to meet the general solid waste requirements of HJ/T300-2007 and HJ/T299-2007, and can be sold as a building material;
4) waste hydrochloric acid treatment: the used waste hydrochloric acid mainly contains sodium chloride after copper extraction and neutralization, enters an organic silicon project wastewater treatment system for treatment or concentration and crystallization to produce sodium chloride, and can also electrolyze and recover sodium and chlorine elements in the waste hydrochloric acid;
5) hydrogen chloride flue gas treatment: generating a small amount of hydrogen chloride flue gas, absorbing the hydrogen chloride flue gas by clear water through an absorption tower, reaching the environmental protection emission standard, emptying, and returning the absorption liquid to the flow.
Compared with the prior art, the utility model discloses one of following beneficial effect has at least:
the utility model discloses an interconnect's mechanical activation device, reactor, washing reactor, replacement reactor, rotary kiln, hydrolysis reactor and crystallization evaporation plant, with useless touch body or thick liquid sediment mainly be the silica flour that contains impurity such as multiple heavy metal, utilize the waste hydrochloric acid that produces in the organosilicon production process, under the combined action of multiple additive, the silica flour that obtains reaches the requirement of general solid waste or industry silica flour through washing processing.
The utility model discloses be provided with the heat transfer sleeve on the rotary kiln, can reduce the energy consumption, increase resource utilization with the partial heat absorption that produces on the rotary kiln.
Drawings
Fig. 1 is a flow chart of the system structure of the present invention.
Fig. 2 is a schematic view of the structure of the rotary kiln of the present invention.
1-a mechanical activation device, 2-a reactor, 3-a washing reactor, 4-a replacement reactor, 5-a rotary kiln, 6-a hydrolysis reactor, 7-a crystallization evaporation device, 8-a heat exchange sleeve, 9-a liquid inlet, 10-an impurity outlet and 11-a liquid outlet.
Detailed Description
As shown in fig. 1-2, in order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The utility model discloses a waste contact body and slurry slag treatment system produced in the production process of organic silicon, which comprises a mechanical activation device 1, a reactor 2, a washing reactor 3, a displacement reactor 4, a rotary kiln 5, a hydrolysis reactor 6 and a crystallization evaporator 7, wherein the feeding end of the mechanical activation device 1 is connected with a material and a waste hydrochloric acid outlet, the discharging end is connected with the reactor 2, the reactor 2 is respectively connected with the washing reactor 3 and the displacement reactor 4, the washing reactor 3 is connected with the rotary kiln 5, the displacement reactor 4 is connected with the hydrolysis reactor 6, and the tail end of the hydrolysis reactor 6 is connected with the crystallization evaporator 7, the waste contact body or slurry slag is mainly silicon powder containing impurities such as a plurality of heavy metals through the mechanical activation device 1, the reactor 2, the washing reactor 3, the displacement reactor 4, the rotary kiln 5, the hydrolysis reactor 6 and the crystallization evaporator 7 which are connected with each other, waste hydrochloric acid generated in the production process of organic silicon is utilized, and under the combined action of various additives, the obtained silicon powder is washed and treated to meet the requirements of common solid waste or industrial silicon powder.
Example 2
On the basis of the embodiment 1, a circulating pipeline is arranged on a pipeline for connecting the washing reactor 3 and the rotary kiln 5, and the tail end of the circulating pipeline is connected between the mechanical activation device 1 and the reactor 2, so that the liquid material can be returned for reaction again, and the treatment effect is improved.
Example 3
On embodiment 1's basis, 5 circumference parcels of rotary kiln are provided with heat transfer sleeve 8, and heat transfer sleeve 8 bottom is provided with inlet 9 and impurity export 10, and the top is provided with liquid outlet 11, all is provided with the valve on inlet 9, impurity export 10 and the liquid outlet 11, can absorb the partial heat that produces on the rotary kiln 5, reduces the energy consumption, increase resource utilization.
Example 4
On the basis of embodiment 3, the height of the liquid inlet 9 is higher than that of the impurity outlet 10, and after a period of time, impurities in the heat exchange sleeve 8 are discharged through the impurity outlet 10.
Example 5
On the basis of embodiment 3, the outer wall of the heat exchange sleeve 8 is wrapped with a shading cotton layer, so that the heat loss is reduced.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (5)
1. The waste contact body and slurry slag treatment system produced in the production process of organic silicon is characterized in that: including mechanical activation device (1), reactor (2), washing reactor (3), replacement reactor (4), rotary kiln (5), hydrolysis reactor (6) and crystallization evaporation plant (7), mechanical activation device (1) feed end and material, waste hydrochloric acid exit linkage, the discharge end is connected with reactor (2), reactor (2) are connected with washing reactor (3) and replacement reactor (4) respectively, washing reactor (3) are connected with rotary kiln (5), replacement reactor (4) are connected with hydrolysis reactor (6), hydrolysis reactor (6) end-to-end connection has crystallization evaporation plant (7).
2. The system for treating waste contact bodies and slurry residues generated in the production process of organic silicon according to claim 1, is characterized in that: a circulating pipeline is arranged on a pipeline connecting the washing reactor (3) and the rotary kiln (5), and the tail end of the circulating pipeline is connected between the mechanical activation device (1) and the reactor (2).
3. The system for treating waste contact bodies and slurry residues generated in the production process of organic silicon according to claim 1, is characterized in that: the rotary kiln (5) is circumferentially wrapped with a heat exchange sleeve (8), the bottom of the heat exchange sleeve (8) is provided with a liquid inlet (9) and an impurity outlet (10), the top of the heat exchange sleeve is provided with a liquid outlet (11), and valves are arranged on the liquid inlet (9), the impurity outlet (10) and the liquid outlet (11).
4. The system for treating waste contact bodies and slurry residues generated in the production process of organic silicon according to claim 3, is characterized in that: the height of the liquid inlet (9) is higher than that of the impurity outlet (10).
5. The system for treating waste contact bodies and slurry residues generated in the production process of organic silicon according to claim 3, is characterized in that: the outer wall of the heat exchange sleeve (8) is wrapped with a shading cotton layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921835976.5U CN210754326U (en) | 2019-10-29 | 2019-10-29 | Waste contact body and slurry slag treatment system generated in organic silicon production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921835976.5U CN210754326U (en) | 2019-10-29 | 2019-10-29 | Waste contact body and slurry slag treatment system generated in organic silicon production process |
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| Publication Number | Publication Date |
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| CN210754326U true CN210754326U (en) | 2020-06-16 |
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| CN201921835976.5U Active CN210754326U (en) | 2019-10-29 | 2019-10-29 | Waste contact body and slurry slag treatment system generated in organic silicon production process |
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| CN (1) | CN210754326U (en) |
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2019
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Address after: No.86 Yuantong North Road, Kunming, Yunnan 650000 Patentee after: Yunnan Keli environmental protection Co.,Ltd. Address before: No.86 Yuantong North Road, Kunming, Yunnan 650000 Patentee before: YUNNAN KEENLY NEW MATERIAL Co.,Ltd. |