A hazardous waste treatment system

Abstract

The application discloses a hazardous waste treatment system, which comprises a crushing device for crushing semi-solid and solid materials, a first vibrating distributing device provided with dry powder and used for distributing the dry powder to the semi-solid and solid materials in the crushing device, a conveying device for conveying the semi-solid and solid materials output by the crushing device, a second vibrating distributing device provided with dry powder and used for distributing the dry powder to the semi-solid and solid materials on the conveying device, a pumping device for conveying liquid materials, and a granulating device for mixing and granulating the dry powder, the semi-solid and solid materials and the liquid materials. The technical scheme solves the problems of high-viscosity hazardous waste crushing adhesion, mixing difficulty, especially the mixing and compatibility difficulty of high-sulfur and high-halogen viscous materials, and difficult treatment of flue gas.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hazardous waste treatment, in particular to a hazardous waste treatment system. BACKGROUND

[0002] With the progress of science and technology and the increasingly stringent environmental protection requirements, the three wastes problem of the chemical and pharmaceutical industries has attracted widespread attention and attention, and hazardous waste, as a difficult and key point among the three wastes, occupies a very key position. Due to its complex composition and variety, it is difficult to be completely qualitative and quantitative, and it is one of the more difficult hazardous wastes for disposal in China's hazardous waste disposal center.

[0003] In the production process of many raw materials of chemical and pharmaceutical industries, sedimentation or dry distillation processing is needed, which will produce some high-viscosity organic waste, such as rectification residue, distillation residue, and waste polymers. These substances are in a high-viscosity liquid, semi-solid or solid state at room temperature, and show certain fluidity or semi-fluidity after heating, and cannot be stably atomized by pressure, mechanical or medium. In addition, due to its viscosity, it cannot be pretreated by conventional cutting and crushing. Especially some materials with high sulfur and high halogen and high viscosity, it is difficult to mix and match the materials, which greatly reduces the actual disposal capacity of hazardous waste disposal units, so the pre-disposal of high-viscosity, high-sulfur and high-halogen hazardous waste is a problem to be solved. SUMMARY

[0004] The present application provides a hazardous waste treatment system, which solves the problems of breaking and sticking of high-viscosity hazardous waste, mixing difficulty of high-sulfur and high-halogen viscous materials, and difficult treatment of flue gas.

[0005] The present application provides a hazardous waste treatment system, which includes:

[0006] The crushing device is used for crushing semi-solid and solid materials;

[0007] The first vibrating distribution device is loaded with dry powder and is used for distributing dry powder to the semi-solid and solid materials in the crushing device;

[0008] The conveying device is used for conveying the semi-solid and solid materials output by the crushing device;

[0009] The second vibrating distribution device is loaded with dry powder and is used for distributing dry powder to the semi-solid and solid materials on the conveying device;

[0010] The pumping device is used for conveying liquid materials;

[0011] The granulating device is used for mixing and granulating the dry powder, semi-solid, solid and liquid materials.

[0012] In some embodiments, the conveying device comprises an inlet end and an outlet end, the height of the inlet end is lower than the height of the outlet end, the outlet of the crushing device corresponds to the inlet end, and the inlet of the granulating device corresponds to the outlet end.

[0013] In some embodiments, the dry powder outlet of the first vibrating distributing device corresponds to the inlet of the crushing device, for providing dry powder to the crushing device; and the dry powder outlet of the second vibrating distributing device corresponds to the inlet end of the conveying device, for providing dry powder to the conveying device.

[0014] In some embodiments, the dry powder outlet of the second vibrating distributing device is located between the inlet end and the outlet of the crushing device.

[0015] In some embodiments, the conveying device further comprises a dustproof cover and a collection bin for recycling dry powder.

[0016] In some embodiments, the pumping device comprises:

[0017] a storage tank for storing waste liquid material;

[0018] a waste liquid conveying pump for pumping waste liquid material in the storage tank;

[0019] at least one spray head for conveying the waste liquid material pumped by the waste liquid conveying pump into the granulating device;

[0020] a pipeline for connecting the storage tank, the waste liquid conveying pump and the spray head.

[0021] In some embodiments, the granulating device is installed obliquely, and a high-frequency electric vibrating device for controlling the vibration of the granulating device is further installed at the bottom of the granulating device.

[0022] In some embodiments, further comprising:

[0023] a pyrolysis device for pyrolyzing the granular material output by the granulating device;

[0024] a granular material conveying device for conveying the granular material output by the granulating device into the pyrolysis device.

[0025] In some embodiments, the pyrolysis gas outlet of the pyrolysis device is connected to an alkali washing tank through a pipeline, and the alkali washing tank is used for washing and deacidifying the pyrolysis gas.

[0026] In some embodiments, further comprising a negative pressure exhaust system installed corresponding to the granulating device.

[0027] Compared with the prior art, the application has the advantages that the dry powder and the sticky hazardous waste are mixed and crushed in the crushing device, so that the problem of adhesion to the crushing device during crushing can be avoided; the sticky hazardous waste is wrapped by the compounding material after mixing and granulation by the granulation disc, the particles are not adhered to each other, and automatic discharge is achieved by centrifugal force, so that the problem of slow speed and large labor force caused by manual mixing of the sticky hazardous waste is solved; the average particle size of the particles is small, incineration is more sufficient, the incineration time is short, the pyrolysis gas is secondarily utilized, and the problems of large particle size of the particles caused by manual crushing, low incineration efficiency, and insufficient incineration to release other pollutants are effectively solved; the system is provided with powder, solid and liquid feeding devices, and can meet the requirements of mixing and compounding of materials in different conditions. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0029] Figure 1 The figure is a structural schematic diagram of the hazardous waste treatment system of the present application.

[0030] The implementation, functional characteristics and advantages of the present application will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments.

[0032] Unless otherwise defined, all technical and scientific terms used in the present application have the same meanings as those commonly understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0033] The hazardous waste treatment system proposed in the present embodiment is described with reference to Figure 1 , and includes:

[0034] The crushing device 1 is used for crushing semi-solid and solid materials.

[0035] The first vibrating material distribution device 2 is provided with dry powder and is used for distributing the dry powder to the semi-solid and solid materials in the crushing device 1.

[0036] The conveying device 3 is used for conveying the semi-solid and solid materials output by the crushing device 1.

[0037] The second vibrating material distribution device 4 is provided with dry powder and is used for distributing the dry powder on the semi-solid, solid material on the conveying device 3;

[0038] The pumping device is used for conveying the liquid material;

[0039] The granulating device 6 is used for mixing and granulating the dry powder, semi-solid, solid and liquid material.

[0040] In the process of crushing the semi-solid and solid material, the dry powder distribution can effectively prevent the material from sticking in the crushing device 1. In the process of conveying the crushed material to the granulating device 6 by the conveying device 3, the dry powder is distributed in advance on the conveying device 3 by the second vibrating material distribution device 4. After the crushed material falls on the conveying device 3, it is in contact with the dry powder, which further prevents it from sticking. In this embodiment, the crushing device 1 provides semi-solid and solid material, the vibrating material distribution device provides dry powder material, and the pumping device provides liquid material. The granulation of waste materials in multiple states can be realized, different hazardous waste treatment requirements can be met, and the problems of slow speed and large labor force caused by manual mixing of viscous hazardous waste can be solved by the granulating device 6.

[0041] Further, the conveying device 3 comprises an inlet end and an outlet end, the height of the inlet end is lower than the height of the outlet end, the discharge port of the crushing device 1 corresponds to the inlet end, and the inlet port of the granulating device 6 corresponds to the outlet end. In this embodiment, the conveying device 3 can adopt the commonly used belt conveying device 3 in the prior art. The dry powder outlet of the first vibrating material distribution device 2 corresponds to the inlet port of the crushing device 1, which is used to provide dry powder to the crushing device 1; the dry powder outlet of the second vibrating material distribution device 4 corresponds to the inlet end of the conveying device 3, which is used to provide dry powder to the conveying device 3. The dry powder outlet of the second vibrating material distribution device 4 is located between the inlet end and the discharge port of the crushing device 1.

[0042] In this embodiment, the height of the inlet end is lower than the height of the outlet end, which is conducive to the full contact of the material output by the crushing device 1 with the dry powder distributed on the conveying device 3 by the second vibrating material distribution device 4, preventing the material from sticking during the conveying process.

[0043] Further, the conveying device 3 further comprises a dustproof closed cover 31 and a collection bin 32 for recycling dry powder. The closed cover 31 can effectively prevent the dust from being scattered during the conveying process, and can also prevent foreign matters from entering the conveying device 3; and the collection bin 32 is installed at the lowest end of the conveying device 3, which can recycle the scattered dry powder for secondary use.

[0044] Further, the pumping device comprises:

[0045] a storage tank 51 for storing liquid material;

[0046] a waste liquid conveying pump 52 for extracting liquid material in the storage tank;

[0047] at least one spray head 53 for conveying the liquid material extracted by the waste liquid conveying pump 52 to the granulating device 6;

[0048] a pipeline 54 for connecting the storage tank, the waste liquid conveying pump 52 and the spray head 53.

[0049] In the embodiment, the storage tank can store liquid material, and when granulation of the liquid material is needed, the liquid material can be conveyed to the granulating device 6 through the spray head 53 by the waste liquid conveying pump 52. The number of the spray head 53 can be adjusted according to actual production requirements to improve efficiency.

[0050] Further, the granulating device 6 is installed obliquely, and a high-frequency electric vibrating device 61 for controlling the granulating device 6 to vibrate is further installed at the bottom of the granulating device 6. The granulating device 6 can adopt a centrifuge in the prior art, and the material in the centrifuge is granulated and output by centrifugal force, and the vibration of the high-frequency electric vibrating device 61 at the bottom can prevent the adhesion between the materials, so that the particle size of the granulated particles is small enough to meet the subsequent incineration treatment.

[0051] Further, the system further comprises:

[0052] a pyrolysis device 7 for pyrolyzing the granular material output by the granulating device 6;

[0053] a granular material conveying device for conveying the granular material output by the granulating device 6 to the pyrolysis device 7.

[0054] In the embodiment, the pyrolysis device 7 can be a pyrolysis furnace, which pyrolyzes the output granular material.

[0055] Further, the pyrolysis gas outlet of the pyrolysis device 7 is connected to an alkali washing tank 9 through the pipeline 54, the alkali washing tank 9 is used for washing and deacidifying the pyrolysis gas, and the pyrolysis gas after washing and deacidification can enter the pyrolysis furnace again for secondary utilization, thereby providing heat for the pyrolysis process.

[0056] Further, the system further comprises a negative pressure exhaust system 10 installed corresponding to the granulating device 6, which recycles the dust and odor gas generated in the granulation process to prevent pollution to the environment.

[0057] Further, the hazardous waste treatment system provided by the application has the following specific operation process:

[0058] Step one, open the negative pressure exhaust system 10;

[0059] Step two, load materials, load dry powder materials into the first vibrating distributor 2 and the second vibrating distributor 4, load semi-solid and solid materials into the crushing device 1, and load liquid materials into the storage tank 51.

[0060] Step three, start, start the granulating device 6 and the conveying device 3 in sequence; start the second vibrating distributor 4, the first vibrating distributor 2, the crushing device 1, and the waste liquid conveying pump 52 in sequence.

[0061] Step four, adjust the parameters of the granulating device 6, the dry powder and the waste liquid, semi-solid, and solid materials rotate at high speed in the granulating disc under the action of centrifugal force, roll on the disc wall while being extruded by the disc wall, and thus be mixed and granulated under the action of centrifugal force, gravity, and friction; start the high-frequency electric vibrating device 61, which vibrates up and down while the disc rotates; large particle materials automatically overflow from the lower side of the disc and enter the granule conveying device 83. Adjust the proportion of dry materials, waste liquid, semi-solid, and solid according to the granulating effect of the materials.

[0062] Step five, pyrolysis, the mixed granules enter the pyrolysis device 7 through the granule conveying device 83, the pyrolysis gas enters the caustic washing tank 9, and the deacidified pyrolysis gas enters the pyrolysis device 7 again for secondary use, providing heat.

[0063] Step six, reuse, the dry powder in the dry powder collection bin 321 returns to the first vibrating distributor 2 and the second vibrating distributor 4 for secondary use.

[0064] Hereinafter, the present application is further illustrated through specific examples:

[0065] Example one

[0066] A certain environmental technology company enters viscous organic waste liquid, which uses a high-viscosity, high-sulfur, and high-halogen hazardous waste treatment system:

[0067] Step one, open the negative pressure exhaust system 10;

[0068] Step two, load calcium hydroxide into the second vibrating distributor 4 and load viscous organic waste liquid into the storage tank 51.

[0069] Step three, start the granulating device 6, the conveying device 3, the second vibrating distributor 4, and the waste liquid conveying pump 52 in sequence.

[0070] Step four, calcium hydroxide and viscous organic waste liquid under the action of centrifugal force, high-speed rotation in the disc, and at the same time with the wall of the disc extrusion, so as to centrifugal, gravity and friction, calcium hydroxide and waste organic solution agglomerate together to mix granulation; start high frequency electric vibration device 61, up and down vibration while the disc rotates; large particle material from the low end of the disc automatically overflow into the particle conveying device 83;

[0071] Step five, mixed particles through the particle conveying device 83 into the pyrolysis furnace, pyrolysis gas into the caustic washing tank 9, after the deacidification of pyrolysis gas into the pyrolysis furnace for secondary use, provide heat.

[0072] Step six, the calcium hydroxide in the collection bin 32 is returned to the second vibration material distribution device 4 again.

[0073] Example two

[0074] The viscous solid rectification residue of a certain environmental technology company is introduced into the high-viscosity high-sulfur high-halogen hazardous waste treatment system:

[0075] Step one, open the negative pressure exhaust system 10;

[0076] Step two, fill calcium hydroxide in the first vibration material distribution device 2 and the second vibration material distribution device 4, and fill viscous solid rectification residue in the crushing device 1;

[0077] Step three, start the granulation device 6, the conveying device 3, the second vibration material distribution device 4, the first vibration material distribution device 2 and the crushing device 1 in turn;

[0078] Step four, calcium hydroxide and viscous solid rectification residue under the action of centrifugal force, high-speed rotation in the disc, and at the same time with the wall of the disc extrusion, so as to centrifugal, gravity and friction, calcium hydroxide and viscous solid rectification residue agglomerate together to mix granulation; start high frequency electric vibration device 61, up and down vibration while the disc rotates; large particle material from the low end of the disc automatically fall into the particle conveying device 83.

[0079] Step five, mixed particles through the particle conveying device 83 into the pyrolysis furnace, pyrolysis gas into the caustic washing tank 9, after the deacidification of pyrolysis gas into the pyrolysis furnace for secondary use, provide heat.

[0080] Step six, the calcium hydroxide in the collection bin 32 is returned to the second vibration material distribution device 4 and the first vibration material distribution device 2 again.

[0081] The above merely preferred embodiments of the present application and are not intended to limit the patent scope of the present application, any equivalent structure or equivalent process transformation made by using the content of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A hazardous waste treatment system, characterized by, The application relates to a granulation device for granulating dry powder, semi-solid and solid materials. The device comprises: a crushing device for crushing semi-solid and solid materials; a first vibrating material distribution device for distributing dry powder to the semi-solid and solid materials in the crushing device; a conveying device for conveying the semi-solid and solid materials crushed by the crushing device; a second vibrating material distribution device for distributing dry powder to the semi-solid and solid materials on the conveying device; a pumping device for pumping liquid materials; a granulation device for mixing and granulating the dry powder, semi-solid, solid and liquid materials. The conveying device comprises an inlet end and an outlet end, the height of the inlet end is lower than that of the outlet end, the outlet of the crushing device corresponds to the inlet end, and the inlet of the granulation device corresponds to the outlet end. The dry powder outlet of the first vibrating material distribution device corresponds to the inlet of the crushing device, and the dry powder outlet of the second vibrating material distribution device corresponds to the inlet end of the conveying device. The dry powder outlet of the second vibrating material distribution device is located between the inlet end and the outlet of the crushing device. The device further comprises: a pyrolysis device for pyrolyzing the granular materials discharged by the granulation device; a granular material transfer device for transferring the granular materials discharged by the granulation device into the pyrolysis device; a pyrolysis gas outlet of the pyrolysis device is connected with an alkali washing tank through a pipeline, and the alkali washing tank is used for washing and deacidifying the pyrolysis gas; The device further comprises a negative pressure exhaust system installed corresponding to the granulation device. The conveying device further comprises a dustproof closed cover and a collection bin for recycling dry powder. The pumping device comprises: a storage tank for storing waste liquid materials; a waste liquid conveying pump for pumping the waste liquid materials in the storage tank; at least one spray head for conveying the waste liquid materials pumped by the waste liquid conveying pump into the granulation device; a pipeline for connecting the storage tank, the waste liquid conveying pump and the spray head; The granulation device is installed obliquely, and a high-frequency electric vibrating device for controlling the vibration of the granulation device is further installed at the bottom of the granulation device.

Images