CN210333712U

CN210333712U - Solid waste recycling device for cement kiln

Info

Publication number: CN210333712U
Application number: CN201920673722.1U
Authority: CN
Inventors: 朱万政; 王三忠; 孙忠皓; 田博; 高波
Original assignee: Tianjin Weirunda New Material Technology Co ltd
Current assignee: Tianjin Weirunda New Material Technology Co ltd
Priority date: 2019-05-13
Filing date: 2019-05-13
Publication date: 2020-04-17
Anticipated expiration: 2029-05-13

Abstract

The utility model relates to a cement kiln solid waste recycling device, including the sack cleaner, sack cleaner bottom even has the sieving mechanism, be equipped with the screening net of slope in the sieving mechanism, be equipped with the side export in the lower one side of screening net on the sieving mechanism lateral wall, the side export is equipped with coarse fodder recovery unit outward, the screening net bottom is equipped with the vibration hammer, the vibration hammer even has vibrating motor, the export of screening mechanism bottom even has the agitator, agitator lateral wall top is equipped with the inlet, the discharge port of agitator bottom even has separator, be equipped with the separation net that the slope set up in the separator below the discharge port, the separator bottom is equipped with the drain in the lower one side of separation net, the separator bottom is equipped with the liquid outlet in separation net below, the liquid outlet even has nanofiltration device through pipeline and delivery pump in proper order, reverse osmosis unit and evaporimeter. The utility model discloses can reduce the emission of solid useless kiln ash retrieval and utilization in-process dioxin, can also utilize solid useless kiln ash to draw the potassium salt, realize the reasonable recycle of solid useless kiln ash.

Description

Solid waste recycling device for cement kiln

Technical Field

The utility model relates to a recycle field of solid waste especially relates to a solid waste recycling device of cement kiln.

Background

At present, after the cement kiln treatment process is completed, most of smoke is directly discharged after primary treatment by using a dust removal device, collected kiln dust is added into raw materials again for mixing and production, and recycling of kiln dust solid waste is realized. However, a small amount of fly ash with high dioxin content is also contained in the kiln dust, the fly ash enters the cement production system again, and the recycled kiln dust increases the original emission concentration of dioxin through the de novo synthesis reaction of the dioxin under the action of high temperature, so that a large amount of solid-phase dioxin is converted into gas-phase dioxin, and the emission amount of the dioxin in the waste gas is increased; at the same time, the kiln dust is not fully utilized.

Disclosure of Invention

The utility model aims to solve the defects of the prior art and provide a solid waste recycling device of a cement kiln.

The utility model discloses a realize above-mentioned purpose, adopt following technical scheme:

a cement kiln solid waste recycling device comprises a bag-type dust remover, wherein a solid waste kiln dust flue gas inlet is formed in the bottom end of the side wall of the bag-type dust remover, a solid waste kiln dust flue gas outlet is formed in the top end of the side wall, a plurality of dust removing bags are mounted in the bag-type dust remover through fixed plates, a screening device is connected to the bottom of the bag-type dust remover, an inclined screening net is arranged between the inner walls of the screening device, a side outlet is formed in the lower side of the screening net on the side wall of the screening device, a coarse material recovery device is arranged outside the side outlet, a coarse material outlet is formed in the bottom of the coarse material recovery device, a vibration hammer is arranged at the bottom of the screening net and is connected with a vibration motor, the vibration motor is fixed on the side wall of the screening device, a stirrer is connected to the outlet in, the (mixing) shaft even has agitator motor, agitator motor fixes on the lateral wall of agitator, agitator lateral wall top is equipped with the inlet, the agitator bottom is equipped with the discharge port, be equipped with control flap on the discharge port, the discharge port of agitator bottom even has separator, the separation net that is equipped with the slope in the separator below the discharge port, the separator bottom is equipped with the drain in the lower one side of separation net, the separator bottom is equipped with the liquid outlet in the separation net below, the separator lateral wall is equipped with the washing mouth in the separation net top, the liquid outlet even has nanofiltration device, reverse osmosis unit and evaporimeter through pipeline and delivery pump in proper order.

The bag-type dust collector is characterized in that a back-blowing pipeline is arranged above the dust-collecting bags at the inner top of the bag-type dust collector, an outlet is formed in the back-blowing pipeline corresponding to each dust-collecting bag, and the back-blowing pipeline is connected with an air blower.

And a heat exchange jacket is arranged outside the bag-type dust collector, and the upper end and the lower end of the heat exchange jacket are respectively provided with a water inlet and a water outlet.

The utility model has the advantages that: the utility model discloses can reduce the emission of solid useless kiln ash retrieval and utilization in-process dioxin, can also utilize solid useless kiln ash to draw the potassium salt, realize the reasonable recycle of solid useless kiln ash.

Drawings

Fig. 1 is a schematic structural view of the present invention;

in the figure: 1-bag dust collector; 2-a solid waste kiln dust flue gas inlet; 3-a solid waste kiln dust flue gas outlet; 4-a dust removal cloth bag; 5-a screening device; 6-screening the net; a 7-side outlet; 8-a coarse material recovery device; 9-coarse material outlet; 10-a vibration hammer; 11-a vibration motor; 12-a stirrer; 13-stirring shaft; 14-a stirring motor; 15-liquid inlet; 16-a discharge port; 17-a control valve; 18-a separation device; 19-a separation mesh; 20-a sewage draining outlet; 21-a liquid outlet; 22-a nanofiltration device; 23-a reverse osmosis unit; 24-an evaporator; 25-a back-blowing pipeline; 26-heat exchange jacket;

the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

as shown in figure 1, the cement kiln solid waste recycling device comprises a bag-type dust collector 1, wherein a solid waste kiln dust flue gas inlet 2 is arranged at the bottom end of the side wall of the bag-type dust collector 1, a solid waste kiln dust flue gas outlet 3 is arranged at the top end of the side wall, a plurality of dust removing bags 4 are arranged in the bag-type dust collector 1 through a fixing plate, a screening device 5 is connected to the bottom of the bag-type dust collector 1, an inclined screening net 6 is arranged between the inner walls of the screening device 5, a side outlet 7 is arranged at the lower side of the screening net 6 on the side wall of the screening device 5, a coarse material recovery device 8 is arranged outside the side outlet 7, a coarse material outlet 9 is arranged at the bottom of the coarse material recovery device 8, a vibration hammer 10 is arranged at the bottom of the screening net 6, the vibration hammer 10 is connected with a vibration motor 11, the vibration motor 11 is fixed, a stirring shaft 13 is horizontally arranged in the stirrer 12, stirring blades are arranged on the stirring shaft 13, the stirring shaft 13 is connected with a stirring motor 14, the stirring motor 14 is fixed on the side wall of the stirrer 12, a liquid inlet 15 is arranged at the top end of the side wall of the stirrer 12, a discharge port 16 is arranged at the bottom of the stirrer 12, a control valve 17 is arranged on the discharge port 16, a separation device 18 is connected with the discharge port 16 at the bottom of the stirrer 12, an inclined separation net 19 is arranged below the discharge opening 16 in the separation device 18, a sewage discharge outlet 20 is arranged at the lower side of the separation net 19 at the bottom of the separation device 18, a liquid outlet 21 is arranged at the bottom of the separation device 18 below the separation net 19, a flushing port is arranged on the side wall of the separation device 18 above the separation net 19, the liquid outlet 21 is connected with a nanofiltration device 22, a reverse osmosis device 23 and an evaporator 24 in sequence through a pipeline and a delivery pump.

A back-blowing pipeline 25 is arranged above the dust-removing cloth bags 4 at the inner top of the cloth bag dust remover 1, an outlet is arranged on the back-blowing pipeline 25 corresponding to each dust-removing cloth bag 4, and the back-blowing pipeline 25 is connected with an air blower.

The bag-type dust collector 1 is externally provided with a heat exchange jacket 26, and the upper end and the lower end of the heat exchange jacket 26 are respectively provided with a water inlet and a water outlet.

The working principle of the utility model is as follows:

the solid-phase dioxin content in the solid waste kiln dust is increased along with the reduction of the particle size, and the smaller particles are finer, the larger the specific surface area is, and the more abundant the mesoporous structure is. The utility model utilizes the screening net 6 in the screening device 5 to screen the kiln dust, screens out the kiln dust with small particle size, and the kiln dust with larger particle size enters the coarse material recovery device 8 and then is mixed with the raw material to re-enter the cement kiln for recycling, thereby saving the raw material, reducing the cost and reducing the discharge of dioxin; kiln dust with small particle size enters the stirrer 12, clear water is added for stirring, after the stirring is carried out for a period of time, the mixture enters the separating device 18, mud-containing dirt is discharged from the sewage outlet 20, clear liquid enters the nanofiltration device 22, nanofiltration concentrated liquid can flow back to the stirrer 12, nanofiltration clear liquid enters the reverse osmosis device 23, reverse osmosis clear liquid can flow back to the stirrer 12, reverse osmosis concentrated liquid is evaporated and extracted by the evaporator 24 to obtain sylvite, and the comprehensive reutilization of solid waste is realized.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various improvements made by the method concept and technical solution of the present invention or directly applied to other occasions without improvement are all within the protection scope of the present invention.

Claims

1. The cement kiln solid waste recycling device is characterized by comprising a bag-type dust collector (1), wherein a solid waste kiln dust flue gas inlet (2) is arranged at the bottom end of the side wall of the bag-type dust collector (1), a solid waste kiln dust flue gas outlet (3) is arranged at the top end of the side wall, a plurality of dust-removing cloth bags (4) are installed in the bag-type dust collector (1) through fixing plates, the bottom of the bag-type dust collector (1) is connected with a screening device (5), inclined screening nets (6) are arranged between the inner walls of the screening device (5), a side outlet (7) is arranged on the lower side of each screening net (6) on the side wall of the screening device (5), a coarse material recycling device (8) is arranged outside the side outlet (7), a coarse material outlet (9) is arranged at the bottom of the coarse material recycling device (8), a vibration hammer (10) is arranged at the bottom of each screening net (6), and, the vibrating motor (11) is fixed on the side wall of the screening device (5), the outlet at the bottom of the screening device (5) is connected with a stirrer (12), a stirring shaft (13) is horizontally arranged in the stirrer (12), stirring blades are arranged on the stirring shaft (13), the stirring shaft (13) is connected with a stirring motor (14), the stirring motor (14) is fixed on the side wall of the stirrer (12), a liquid inlet (15) is arranged at the top end of the side wall of the stirrer (12), a discharge port (16) is arranged at the bottom of the stirrer (12), a control valve (17) is arranged on the discharge port (16), a discharge port (16) at the bottom of the stirrer (12) is connected with a separating device (18), an inclined separating net (19) is arranged below the discharge port (16) in the separating device (18), and a drain outlet (20) is arranged at the lower side of the separating net (19) at the bottom of, the device is characterized in that a liquid outlet (21) is arranged below the separation net (19) at the bottom of the separation device (18), a flushing port is arranged above the separation net (19) on the side wall of the separation device (18), and the liquid outlet (21) is sequentially connected with a nanofiltration device (22), a reverse osmosis device (23) and an evaporator (24) through a pipeline and a delivery pump.

2. The cement kiln solid waste recycling device according to claim 1, wherein a back-blowing pipeline (25) is arranged on the top of the inner part of the bag-type dust collector (1) above the dust-removing bags (4), an outlet is arranged on the back-blowing pipeline (25) corresponding to each dust-removing bag (4), and the back-blowing pipeline (25) is connected with an air blower.

3. The cement kiln solid waste recycling device according to claim 2, wherein a heat exchange jacket (26) is arranged outside the bag-type dust collector (1), and the upper end and the lower end of the heat exchange jacket (26) are respectively provided with a water inlet and a water outlet.