CN217939630U

CN217939630U - Silica flour recovery system

Info

Publication number: CN217939630U
Application number: CN202221537789.0U
Authority: CN
Inventors: 周文博; 迟伯成; 吕献涛; 杜宝林; 徐潇潇; 赵智渊
Original assignee: Inner Mongolia Xingxing Chemical Co ltd
Current assignee: Inner Mongolia Xingxing Chemical Co ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-12-02
Anticipated expiration: 2032-06-17

Abstract

The utility model discloses a silicon powder recovery system, which comprises a bag-type dust collector, an injection feeder, a silicon powder conveying pipeline, an inert gas source and a silicon powder bin; the feed opening of sack cleaner is equipped with the injection feeder, and the export of injecting the feeder communicates with the feed inlet of silica flour pipeline, and silica flour pipeline's air inlet and inert gas source intercommunication, silica flour pipeline's discharge gate and the feed inlet intercommunication in silica flour storehouse. Has the advantages that: the injection feeder is adopted, so that the discharge of silicon powder is facilitated, and nitrogen is adopted as conveying power, so that the conveying safety can be ensured; the discharge end of the silicon powder conveying pipeline is tangent to the inner wall of the feeding port of the silicon powder bin, so that the silicon powder is favorably settled; through setting up the storehouse top sack cleaner, can retrieve the silica flour of suspension in the silica flour storehouse, reduce the dust concentration in the silica flour storehouse, be favorable to preventing the silica flour explosion, simultaneously, make and produce the negative pressure in the silica flour storehouse, and then make and produce little negative pressure in the rear portion system device, effectively prevent leaking of dust in the system.

Description

Silica flour recovery system

The technical field is as follows:

the utility model relates to a silica flour retrieves technical field, especially relates to a silica flour recovery system.

Background art:

the organosilicon chemical product is prepared mainly by using organosilicon monomer as raw material and copper powder or copper salt as catalyst. In the production process of organic silicon chemical products, the mixture of unreacted silicon powder and catalyst is called waste residue, the waste residue contains a large amount of silicon powder, copper powder and carbon powder, if the waste residue is directly buried, serious environmental pollution can be caused, and simultaneously, a large amount of silicon and copper can be lost, and the waste of resources is caused.

The traditional silicon powder recovery process mainly utilizes a bag-type dust collector to absorb silicon powder with the particle size of 8-40 mu m, and the silicon powder in the particle size section, especially the silicon powder with the particle size of about 10 mu m, is easy to generate silicon powder explosion. The silica flour that the sack cleaner was collected sends into the feed bin through the lifting machine, and silica flour can cause the silica flour that the particle size is less to suspend in the lifting machine inside under the stirring of lifting machine chain after getting into the lifting machine. Along with the continuous addition of silica flour, the concentration of the dust suspended in the elevator is continuously increased. When the dust concentration reaches 160g/m ³ Above-mentioned time, because the friction of lifting machine chain and head and tail pulley can produce the spark, under the higher condition of oxygen content, the silica flour in the lifting machine is very easily exploded, leads to equipment, factory building to damage, causes very big threat to workman's personal safety simultaneously.

The utility model has the following contents:

an object of the utility model is to provide a can prevent that silica flour from producing the silica flour recovery system that explodes and silica flour dirt leaked inside recovery unit.

The utility model discloses by following technical scheme implement: a silicon powder recovery system comprises a bag-type dust collector, an injection feeder, a silicon powder conveying pipeline, an inert gas source and a silicon powder bin;

the feed opening of the bag-type dust collector is provided with the injection feeder, the outlet of the injection feeder is communicated with the feed opening of the silicon powder conveying pipeline, the air inlet of the silicon powder conveying pipeline is communicated with the inert gas source, and the discharge opening of the silicon powder conveying pipeline is communicated with the feed opening of the silicon powder bin.

Preferably, the inert gas source is a nitrogen gas source.

Preferably, the silicon powder bin is cylindrical, and the discharge end of the silicon powder conveying pipeline is tangent to the inner wall of the feeding port of the silicon powder bin.

Preferably, a dust remover is arranged at the top of the silicon powder bin, an air inlet of the dust remover is communicated with the silicon powder bin, and an ash discharge port of the dust remover is communicated with the silicon powder bin.

Preferably, the dust remover is a bin top bag dust remover.

The utility model has the advantages that: 1. the injection feeder is adopted to provide power for the discharge of the silicon powder, so that the discharge of the silicon powder is facilitated, and nitrogen is adopted as conveying power, so that the conveying safety can be effectively ensured, and the silicon powder in the system is prevented from exploding; 2. the discharge end of the silicon powder conveying pipeline is tangent to the inner wall of the feeding port of the silicon powder bin, and conveying gas rotates after entering the silicon powder bin to generate centrifugal force, so that the silicon powder is favorably settled; 3. through setting up the storehouse top sack cleaner, can retrieve the silica flour that suspends in the silica flour storehouse, reduced the dust concentration in the silica flour storehouse, be favorable to preventing the silica flour explosion, simultaneously, make the interior negative pressure that produces of silica flour storehouse, and then produce little negative pressure in making rear portion system device, effectively prevent leaking of dust in the system.

Description of the drawings:

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of the system connection of the present embodiment;

FIG. 2 is a schematic view of the connection between the feeding end of the silicon powder conveying pipeline and the silicon powder bin in this embodiment;

in the figure: 1. the device comprises a bag-type dust collector, 2, an injection feeder, 3, a silicon powder conveying pipeline, 4, a nitrogen gas source, 5, a silicon powder bin, 6 and a bin top bag-type dust collector.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

as shown in fig. 1-2, a silicon powder recovery system comprises a bag-type dust collector 1, an injection feeder 2, a silicon powder conveying pipeline 3, a nitrogen gas source 4, a silicon powder bin 5 and a bin top bag-type dust collector 6; each device is grounded electrostatically to prevent electrostatic sparks.

The feed opening of sack cleaner 1 is equipped with sprays feeder 2, sprays the export of feeder 2 and silica flour pipeline 3's feed inlet intercommunication, silica flour pipeline 3's air inlet and nitrogen gas source 4's gas transmission pipeline intercommunication, silica flour pipeline 3's discharge gate and silica flour storehouse 5's feed inlet intercommunication, and silica flour pipeline 3's discharge end is tangent with the inner wall of silica flour storehouse 5's feed inlet department. The nitrogen is used as the conveying power, so that the conveying safety can be effectively ensured, and the silicon dust in the system is prevented from exploding.

The top of the silicon powder bin 5 is provided with a bin top bag-type dust remover 6, and an air inlet and an ash discharging port of the bin top bag-type dust remover 6 are respectively communicated with the silicon powder bin 5. The bin top bag-type dust collector 6 is used for collecting silicon powder suspended in the silicon powder bin 5, can form a negative pressure environment in the silicon powder bin 5 when reducing the dust concentration in the silicon powder bin 5, is favorable for feeding of front-end silicon powder, and can generate micro negative pressure in rear equipment to effectively prevent dust in the system from leaking.

The working description is as follows:

after the bag-type dust collector 1 is stopped, silicon powder collected in the bag-type dust collector is sent into a silicon powder conveying pipeline 3 through a jet feeder 2 at the bottom, and the silicon powder is sent into a silicon powder bin 5 by taking nitrogen as conveying power. Because the discharge end of silica flour pipeline 3 is tangent with the inner wall in silica flour storehouse 5, silica flour gets into silica flour storehouse 5 along tangential direction, and great silica flour granule subsides through the centrifugal force that gaseous rotation produced, falls into silica flour storehouse 5, and then finer silica flour granule is collected through storehouse top sack cleaner 6, and after storehouse top sack cleaner 6 parkked, the silica flour that storehouse top sack cleaner 6 retrieved got into silica flour storehouse 5 through the ash discharge mouth. And after the silicon powder in the silicon powder bin 5 is screened by a screening machine, the silicon powder with qualified particle size is sent to a finished product bin, and the silicon powder with larger particle size is sent to a crushing working section for crushing again.

This device adopts and concentrates the emission to silica flour when production system parks, and it takes 3 minutes to discharge 0.5t silica flour, consumes nitrogen gas 10m ³ And the energy consumption is low, thereby being beneficial to saving the production cost.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A silicon powder recovery system is characterized by comprising a bag-type dust collector, an injection feeder, a silicon powder conveying pipeline, an inert gas source and a silicon powder bin;

2. The silicon powder recovery system of claim 1, wherein the inert gas source is a nitrogen gas source.

3. The silicon powder recovery system according to claim 1, wherein the silicon powder bin is cylindrical, and the discharge end of the silicon powder conveying pipeline is tangent to the inner wall of the silicon powder bin at the feed inlet.

4. The silicon powder recovery system according to claim 1, wherein a dust remover is disposed at a top of the silicon powder bin, an air inlet of the dust remover is communicated with the silicon powder bin, and an ash discharge port of the dust remover is communicated with the silicon powder bin.

5. The silicon powder recovery system of claim 4, wherein the dust collector is a bag-top bin dust collector.