CN110961426A - Industrial waste salt and waste residue treatment device - Google Patents
Industrial waste salt and waste residue treatment device Download PDFInfo
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- CN110961426A CN110961426A CN201811134929.8A CN201811134929A CN110961426A CN 110961426 A CN110961426 A CN 110961426A CN 201811134929 A CN201811134929 A CN 201811134929A CN 110961426 A CN110961426 A CN 110961426A
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- rotary drum
- gas
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- waste salt
- salt
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
Abstract
The invention discloses an industrial waste salt and waste residue treatment device which is characterized by comprising a feeding device, a pyrolysis device and a post-treatment device, wherein the feeding device, the pyrolysis device and the post-treatment device are sequentially connected; the pyrolysis device comprises a rotary drum and a heating sleeve, wherein the heating sleeve is arranged outside the rotary drum. The electromagnetic induction coil layer in the industrial waste salt and waste residue treatment device enables the rotary drum to be heated in an electromagnetic induction mode, so that the problem of efficient heating of the rotary drum is solved, the integral installation difficulty of equipment is reduced, and the process temperature controllability is enhanced. The heating mode of at least one section of insulating coil enables a plurality of heating sections with temperature zones to be formed in the rotary drum, so that the temperature of the materials is gradually increased, and the steps of preheating, drying and pyrolyzing waste salt and waste residue treatment are sequentially and effectively realized in one drum.
Description
Technical Field
The invention relates to the field of environmental protection, in particular to a treatment device for industrial waste salt and waste residue.
Background
A large amount of industrial waste salt and waste residue are generated every year in the pillar industries of chemical industry, metallurgy, medicine and the like in China, wherein most of the waste salt and waste residue have complex components and are difficult to treat and are defined as hazardous waste. The waste salt and waste residue are widely derived from multiple industries such as coal chemical industry, pesticides, fuels, epoxy resin, rubber auxiliaries and the like, according to statistics, the conservative estimation of the waste salt production amount in the chemical industry in 2017 every year is over 200 million tons, and the waste residue production amount is very large. The waste salt and waste residue are difficult and difficult for enterprises to dispose and comprehensively utilize, so that the enterprises cannot go out of the way, the potential environmental hazard and the food safety risk are caused, and the environmental protection requirement is more severe nowadays.
The current common treatment means for industrial waste and hazardous waste include safe landfill technology and incineration technology. The safe landfill technology needs to occupy large land resources, the landfill site has strict requirements on addresses, and complex organic matter components and salt in waste salt and waste residue have higher requirements on landfill seepage prevention and leachate treatment. The treatment temperature of the incineration technology needs to reach thousands of degrees, salt in the waste is in a molten state, the salt in the molten state is easy to adhere to equipment to cause corrosion or blockage of the equipment, and the continuous operation of the equipment has a challenge, so that the investment of the equipment is increased, and the operation cost is high.
Aiming at the resource utilization of waste salt, some technical methods are also provided. For example, the salt washing method is to wash industrial waste salt with salt mother liquor and water to reduce the content of organic matters in the waste salt, and is only suitable for industrial waste salt with single organic matter component, low content and low requirement for subsequent use. The oxidation method adds an oxidant into the brine to eliminate the organic matters, needs to determine the type and the dosage of the targeted oxidant according to the type and the content of the organic matters, also needs to consider the corrosion resistance of equipment, and has to be examined for universality and economy.
In recent years, people are more and more concerned about the high-temperature pyrolysis technology for realizing harmless and resource treatment of high-salt-content waste residues while reducing treatment cost. The principle is that under the milder condition, organic matters are gasified or converted into carbon granules, and salt is still kept in a solid state, so that separation is realized. CN201720790614.3 introduces a process unit for recycling waste salt, the device adopts a molten salt furnace to process, the temperature exceeds 1000 ℃, the waste salt flows out in a molten state, a refractory lining structure and a heat exchange system in the furnace are arranged in the furnace body, and the equipment manufacturing process is complex. CN201710248188.5 has introduced a technology and equipment of industry waste salt graded decomposition carbonization innocent treatment, carries out pyrolysis carbonization to the waste salt through the hot gas flow, has set up a plurality of carbide furnaces and has realized rising temperature step by step so that abundant pyrolysis, and the flow is longer, and the equipment quantity is more, and the material shifts the transport link more.
Disclosure of Invention
The invention aims to provide an industrial waste salt and waste residue treatment device, which has high treatment efficiency and can simultaneously realize harmless and resource treatment of high-salt-content waste salt and waste residue.
The invention is realized by the following technical scheme:
the industrial waste salt and waste residue treatment device is characterized by comprising a feeding device, a pyrolysis device and a post-treatment device, wherein the feeding device, the pyrolysis device and the post-treatment device are sequentially connected; the pyrolysis device comprises a rotary drum and a heating sleeve, wherein the heating sleeve is arranged outside the rotary drum.
Wherein, also comprises a feed hopper and a spiral band; the feed hopper is arranged on the upper portion of the feeding device, the spiral band is arranged in the feeding device, and the discharge end of the feeding device extends into the inner cavity of the rotary drum.
The post-treatment device comprises a gas-slag separator, a discharging part, a gas leading-out pipeline and a combustible gas collecting and utilizing device; the lower part of the gas-slag separator is provided with a discharging part, the upper part of the gas-slag separator is connected with a gas leading-out pipeline, and the gas leading-out pipeline is connected with a combustible gas collecting and utilizing device.
Preferably, a waste gas alkali liquor absorption device is arranged behind the combustible gas collection and utilization device.
The heating sleeve is coaxially and parallelly arranged with the rotary drum, and the heat insulation material layer and the electromagnetic induction coil layer are sequentially wrapped outside the heating sleeve from inside to outside.
Preferably, the electromagnetic induction coil layer is at least one section of insulating coil arranged along the axial direction of the heat insulation material layer.
More preferably, each of the at least one length of insulated wire is provided with a heating control means.
Wherein, the inner wall of the rotary drum is provided with a shoveling plate.
Wherein, the feeding device, the pyrolysis device and the post-treatment device are fixedly connected through a sealing part in a sealing way.
Preferably, one end of the sealing component is fixed, the other end of the sealing component rotates, the fixed end is fixed statically, an air inlet pipe is arranged on the fixed end, and the rotating end rotates along with the rotary drum.
Advantageous effects
Compared with the prior art, the invention has the following advantages:
⑴ the arrangement of the electromagnetic induction coil layer in the industrial waste salt and waste residue treatment device of the invention enables the rotary drum to be heated in an electromagnetic induction mode, which not only solves the problem of high-efficiency heating of the rotary drum, but also reduces the difficulty of the whole installation of the device and enhances the controllability of the process temperature, wherein the heating mode of at least one section of the insulating coil enables a plurality of heating sections of temperature zones to be formed in the rotary drum, thereby the temperature of the material is gradually increased, and the steps of waste salt and waste residue treatment of preheating, drying and pyrolysis are sequentially and effectively realized in one drum.
⑵, the tail end of the feeding device in the industrial waste salt and waste residue treatment device of the invention directly extends into the inner cavity of the rotary drum, thereby avoiding the accumulation of materials in the sealing part when the device is operated and improving the controllability of material transportation.
⑶ the arrangement of the shoveling plates on the inner wall of the rotary drum in the industrial waste salt and waste residue treatment device can lead the rotary drum to shovel and carry materials in the rotating process, thereby avoiding the deposition of the materials at the lower part of the drum body and improving the pyrolysis efficiency.
⑷ the device for treating industrial waste salt and waste residue has simple process, compact equipment and convenient modular design and implementation.
Drawings
FIG. 1 is a schematic structural view of an industrial waste salt and waste residue treatment apparatus according to the present invention;
FIG. 2 is a side view of a pyrolysis apparatus in the industrial waste salt and slag treatment apparatus of the present invention.
Wherein, 1, a feeding device; 2. a rotating drum; 3. heating the sleeve; 4. an electromagnetic induction coil layer; 5. a sealing member; 6. a gas-slag separator; 7. a combustible gas collection and utilization device; 8. shoveling plates; 9. a thermal insulation material layer; 10. a feed hopper, 11, a spiral tie; 12. an air inlet pipe; 13. a discharge member; 14. a gas outlet pipeline; 15. waste gas alkali liquor absorbing device.
Detailed Description
The industrial waste salt and waste residue treatment apparatus of the present invention will be described below by way of specific embodiments. Unless otherwise specified, the technical means used in the present invention are well known to those skilled in the art. In addition, the embodiments should be considered illustrative, and not restrictive, of the scope of the invention, which is defined solely by the claims. It will be apparent to those skilled in the art that various changes and modifications can be made in the invention without departing from the spirit and scope of the invention.
As shown in fig. 1, the industrial waste salt and waste residue treatment device of the present invention comprises a feeding device 1, a pyrolysis device and a post-treatment device, wherein the feeding device, the pyrolysis device and the post-treatment device are connected in sequence; the pyrolysis device comprises a rotary drum 2 and a heating sleeve 3, wherein the heating sleeve 3 is coaxially arranged in parallel with the rotary drum 2 and is arranged on the outer side of the rotary drum 2.
Wherein, the feeding device, the pyrolysis device and the post-treatment device are fixedly connected in a sealing way through a sealing part 5. The sealing component 5 is arranged, so that the connection among the feeding device, the pyrolysis device and the post-treatment device is effectively sealed.
The sealing component 5 also comprises a fixed end and a rotating end, the fixed end is fixed statically, and an air inlet pipe 12 is arranged on the fixed end so as to lead in protective gas or reaction gas required by the pyrolysis reaction in the rotary drum 2, so that the pyrolysis reaction effect of waste salt and waste residue is better; the rotating end of the sealing member 5 rotates with the drum 2.
Wherein, spiral link 11 top still is provided with feeder hopper 10, sets up the picture peg on the feeder hopper 10, and the picture peg is mostly horizontal setting or slant setting, the size of the adjustable feed inlet of degree of opening and shutting through adjusting the picture peg, and the control to the rotatory propulsion speed of spiral link 11 in addition, but the feed rate of dual control material. If the mobility of material is relatively poor, also can adopt the motor to drive the feeder and send the material to the spiral link to can more effectively guarantee the transport of material.
The rotary drum 2 is obliquely arranged, the drum body and the horizontal plane form a certain included angle, and a shoveling plate 8 is further arranged on the inner wall of the rotary drum 2. The plurality of shoveling plates 8 on the inner wall of the rotary drum 2 can shovel and bring materials in the rotary drum 2 in the rotating process of the rotary drum 2, and the pyrolysis efficiency is increased.
Wherein, the upper portion of feed arrangement 1 still is provided with feeder hopper 10, and the inside of feed arrangement 1 is provided with spiral tie 11, and the discharge end of feed arrangement 2 stretches into the inner chamber of rotary drum 2. The discharge end of the feeding device 1 extends into the inner cavity of the rotary drum 2, so that materials are directly conveyed into the inner cavity of the rotary drum 2, accumulation of the materials at the joint when passing through the sealing part 5 is effectively prevented, and the materials directly enter the inner cavity of the rotary drum 2 to participate in treatment reaction.
In addition, the drum 2 is electrically connected to a variable speed motor, which is rotated by the variable speed motor.
As shown in fig. 2, the heating sleeve 3 disposed outside the drum 2 is fixedly installed, and the thermal insulation material layer 9 and the electromagnetic induction coil layer 4 are sequentially wrapped on the outer wall of the heating sleeve 3 from inside to outside. The electromagnetic induction coil layer 4 is formed by winding a heat insulation material layer 9 on the outer wall of the insulating sleeve by using a temperature-resistant insulating wire, one or more sections of insulating wires are wound along the axial direction of the insulating sleeve according to the heating requirement, and each section of insulating wire is provided with a heating control device respectively. With the structure, after the power is switched on, the temperature of the barrel body at the position of the heating sleeve 3 can be increased by the electromagnetic induction generated by the insulated conducting wire, and the electromagnetic induction is conducted into the rotary barrel 2 to increase the temperature of the rotary barrel. The setting of multistage insulated wire can make the temperature difference at the different positions of 2 stack barrels of rotary drum to the realization is to the different temperature pyrolysis of multistage of material in rotary drum 2, makes the pyrolysis treatment effect to the material better.
Wherein the post-treatment device comprises a gas-slag separator 6, a discharging part 13, a gas leading-out pipeline 14, a combustible gas collecting and utilizing device 7 and a waste gas alkali liquor absorbing device 15; the lower part of the gas-slag separator 6 is provided with a discharging part 13, the upper part is connected with a gas leading-out pipeline 14, and the gas leading-out pipeline 14 is connected with a combustible gas collecting and utilizing device 7 and a waste gas alkali liquor absorbing device 15.
During operation, industrial waste salt or waste residue enters the feeding device 1 through the feeding hopper 10 or the feeder driven by the motor, and then is directly sent into the inner cavity of the rotary drum 2 for pyrolytic reaction through the rotary pushing of the spiral band 11 in the feeding device 1, and if protective gas or industrial gas needs to be introduced into the pyrolytic reaction, the protective gas or the industrial gas can be introduced into the feeding device through the air inlet pipe 12 at the fixed end of the sealing component 5. In the pyrolysis process, the rotary drum 2 is driven by a motor to rotate, the electromagnetic induction coil layer 4 outside the rotary drum 2 is electrified, the insulated conducting wire generates electromagnetic induction to heat the interior of the rotary drum 2, so that waste salt or waste residue in the cavity of the rotary drum 2 is heated, the plurality of shoveling plates 8 on the inner wall of the rotary drum 2 are shoveled and taken to lift the waste salt or waste residue in the rotary drum 2 in the rotation process, the waste salt or waste residue to be treated is sequentially heated at different temperatures in the rotary drum 2, the preheating, drying and pyrolysis treatment are realized, the waste salt or waste residue is finally fed into the gas-residue separator 6 to be separated from gas residue, and solid residue is accumulated at the lower part of the gas-residue separator 6 and is periodically discharged through the discharging part; the waste gas is led out through a gas leading-out pipeline 14 at the upper part of the gas-slag separator 6 and then enters the combustible gas heat collection and utilization device 7 for recycling, and if the waste gas amount is small, the recycling value is low, the waste gas alkali liquor is directly led into the waste gas alkali liquor absorption device 15.
Example 1
Waste salt produced by certain epoxy resin production enterprises contains 96.5 percent of NaCl, 3.33 percent of glycerol, 0.08 percent of resin and 0.08 percent of toluene. The waste salt treatment device is adopted for treatment, the temperature of the heating section of the rotary drum is controlled to be preheated to 200 ℃, the waste salt is dried to 300 ℃, the waste salt is pyrolyzed to 400-500 ℃, the waste salt stays in the rotary drum for 3-20 minutes, and waste gas formed after pyrolysis treatment enters the waste gas alkali liquor absorption device through a gas pipeline at the top of the gas-slag separator. Discharging solid slag formed after pyrolysis treatment from a discharging part at the lower part of the gas-slag separator, observing that the solid slag is brown and grey white, cooling the solid slag, adding water to dissolve the solid slag, filtering the solid slag to obtain refined brine, and analyzing and detecting the refined brine to obtain the TOC content of about 10-20 mg/l.
Claims (10)
1. The industrial waste salt and waste residue treatment device is characterized by comprising a feeding device, a pyrolysis device and a post-treatment device, wherein the feeding device, the pyrolysis device and the post-treatment device are sequentially connected; the pyrolysis device comprises a rotary drum and a heating sleeve, wherein the heating sleeve is arranged outside the rotary drum.
2. The industrial waste salt and slag treatment plant according to claim 1, further comprising a feed hopper, a spiral link; the feed hopper is arranged on the upper portion of the feeding device, the spiral band is arranged in the feeding device, and the discharge end of the feeding device extends into the inner cavity of the rotary drum.
3. The industrial waste salt and waste residue treatment device according to claim 1, wherein the post-treatment device comprises a gas-residue separator, a discharge part, a gas leading-out pipeline and a combustible gas collecting and utilizing device; the lower part of the gas-slag separator is provided with a discharging part, the upper part of the gas-slag separator is connected with a gas leading-out pipeline, and the gas leading-out pipeline is connected with a combustible gas collecting and utilizing device.
4. The apparatus as claimed in claim 3, wherein an exhaust gas alkali solution absorption device is further disposed after the combustible gas collection and utilization device.
5. The industrial waste salt and waste residue treatment device according to claim 1, further comprising a heat insulation material layer and an electromagnetic induction coil layer, wherein the heating sleeve is coaxially arranged in parallel with the rotary drum, and the heat insulation material layer and the electromagnetic induction coil layer are sequentially wrapped outside the heating sleeve from inside to outside.
6. The industrial waste salt and residue treatment device according to claim 5, wherein the electromagnetic induction coil layer is at least one section of insulating coil arranged along the axial direction of the heat insulating material layer.
7. The apparatus of claim 6, wherein each of the at least one section of the insulated wire is provided with a separate heating control device.
8. The apparatus as claimed in claim 1, wherein a shovelling plate is installed on the inner wall of the drum.
9. The industrial waste salt and slag treatment plant according to claim 1, wherein the feeding means, the pyrolysis means and the post-treatment means are fixedly and hermetically connected by sealing means.
10. The apparatus as claimed in claim 9, wherein the sealing member is fixed at one end and rotates at the other end, the fixed end is fixed at a standstill, and an air inlet pipe is provided thereon, and the rotating end rotates with the drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134929.8A CN110961426A (en) | 2018-09-28 | 2018-09-28 | Industrial waste salt and waste residue treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134929.8A CN110961426A (en) | 2018-09-28 | 2018-09-28 | Industrial waste salt and waste residue treatment device |
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| CN110961426A true CN110961426A (en) | 2020-04-07 |
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| CN201811134929.8A Pending CN110961426A (en) | 2018-09-28 | 2018-09-28 | Industrial waste salt and waste residue treatment device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618076A (en) * | 2020-06-17 | 2020-09-04 | 中国科学院合肥物质科学研究院 | Industrial waste salt treatment system based on microwave pyrolysis method |
| CN114307033A (en) * | 2021-12-21 | 2022-04-12 | 山东天力能源股份有限公司 | Waste salt drying and pyrolyzing system and method |
| CN117299757A (en) * | 2023-11-30 | 2023-12-29 | 中鹏未来有限公司 | Recovery system and method for retired fan blades |
-
2018
- 2018-09-28 CN CN201811134929.8A patent/CN110961426A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618076A (en) * | 2020-06-17 | 2020-09-04 | 中国科学院合肥物质科学研究院 | Industrial waste salt treatment system based on microwave pyrolysis method |
| CN114307033A (en) * | 2021-12-21 | 2022-04-12 | 山东天力能源股份有限公司 | Waste salt drying and pyrolyzing system and method |
| CN114307033B (en) * | 2021-12-21 | 2022-12-02 | 山东天力能源股份有限公司 | Waste salt drying and pyrolysis system and method |
| CN117299757A (en) * | 2023-11-30 | 2023-12-29 | 中鹏未来有限公司 | Recovery system and method for retired fan blades |
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