Cooling, dedusting and discharging system for high-temperature soil
Technical Field
The utility model relates to an oiliness pollutes and organic contaminated soil processing technology field specifically is a high temperature soil after handling thermal desorption system cools down the discharge system who removes dust.
Background
In recent years, for the treatment of organic contaminated soil, the thermal desorption technology has obvious advantages in the aspects of repair cycle, repair effect and the like, and is gradually popularized and applied in the field of soil repair. At present, the development of thermal desorption technology at home and abroad is quite mature, and an industrial chain of the thermal desorption technology is formed. Various thermal desorption apparatuses have been developed according to differences in heating manner, heating temperature, treated pollutants, and the like, including direct (indirect) thermal desorption apparatuses, low-temperature (high-temperature) thermal desorption apparatuses, and the like. The development of thermal desorption equipment not only comprises the treatment technology of soil, but also covers the treatment of tail gas, waste water and the like, and a professional thermal desorption treatment system integrating the treatment technologies of soil, gas, water and the like is formed.
The existing thermal desorption treatment system is usually equipped with corresponding flue gas dust removal equipment, but no effective dust removal system exists for the raised dust generated in the discharging process of the soil after thermal desorption treatment. Due to the fact that the heating mode is adopted for disposal, soil moisture is evaporated in the disposal process, soil at the discharge hole is dry, the temperature of the soil after being treated by the thermal desorption chamber is 300-500 ℃, and the soil belongs to high-temperature soil. The high-temperature soil is easy to generate a large amount of dust particles in the unloading process, so that the field operation environment is poor, the appearance is not attractive, and the health of field operators is not facilitated. Therefore, an effective discharging control system for cooling and dedusting high-temperature soil is designed according to the characteristics of thermal desorption equipment, so that low-temperature discharging of the high-temperature soil and effective control of dust emission are realized.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cooling dust removal ejection of compact system of high temperature soil to the soil temperature of the discharge gate of thermal desorption equipment is high and dry among the solution prior art, and the process of unloading produces a large amount of dust particles easily, leads to the poor and unsafe problem of site operation environment.
In order to solve the technical problem, the utility model provides a technical scheme is:
the utility model discloses cooling dust removal discharging system of high temperature soil, including consecutive discharge screw conveyer, spray scraper blade machine and clean room, the one end of discharge screw conveyer is equipped with the high temperature soil feed inlet that closely links to each other with thermal desorption room discharge gate, and the other end of discharge screw conveyer is equipped with the soil discharge gate, and the lateral wall of discharge screw conveyer is equipped with cooling jacket water layer, cools down the high temperature soil of carrying through cooling jacket water layer; one end of the spraying scraper conveyor is provided with a soil feeding hole connected with the soil discharging hole, and the other end of the spraying scraper conveyor is provided with a soil discharging hole extending into the dust removing chamber; the clean room comprises airtight big-arch shelter, and the clean room top is equipped with the water-spraying system who is used for spouting wet dust.
The discharging screw conveyor comprises a transmission motor and a double-screw conveying rod, the double-screw conveying rod is driven by the transmission motor to rotate, and soil is conveyed to a soil discharging port through the double-screw conveying rod; at least three stages of cooling jacket water layers are arranged on the periphery of the double-helix conveying rod, and each stage of cooling jacket water layer is provided with a water inlet and a water outlet respectively.
The screw conveyer of unloading is supported by telescopic support frame, and the included angle that makes the screw conveyer of unloading and ground form through telescopic support frame is 5-10.
It includes gear motor and sleeve roller chain to spray scraper blade machine, and sleeve roller chain is by its rotation of gear motor drive, carries soil to soil blanking mouth simultaneously.
It is equipped with and is used for spouting wet spraying system with soil to spray scraper, and this spraying system is located the top of sleeve roller chain.
The spraying scraper conveyor is arranged in an upward inclined way, and the upward inclined angle is 30-50 degrees.
It is equipped with the conveyer that is used for transporting soil to soil treatment storage yard to spray the soil blanking mouth below of scraping the trigger.
The spraying system of the utility model comprises an electric control cabinet and an atomizing spray header, wherein the atomizing spray header is uniformly arranged at the top of the dust chamber, the atomizing particle diameter of a single atomizing nozzle of the atomizing spray header is 30-200 mu m, the flow is 30-100L/h, and the bearing range is 0.4-15 Mpa; the opening and closing and the flow of the atomizing spray header are controlled by an electric control cabinet.
Atomizing shower head adopts the solid toper nozzle of wide angle.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the utility model discloses can effectively cool down and remove dust high temperature soil, the field operation time does not basically have the raise dust to produce, has greatly improved the production environment on-the-spot.
(2) The utility model discloses the design has airtight cover water layer that presss from both sides around the screw conveyer of unloading, and recirculated cooling water passes through the water inlet and gets into the jacket layer, carries out tertiary cooling to the soil in the screw conveyer of unloading, and soil does not directly mix with the cooling water among the cooling process, and existing effect is avoided screw drive in-process soil to bond on the hob, prevents the emergence of the jam condition, the recovery of the waste heat of being convenient for again.
(3) The utility model discloses set up spray set in the inside of spraying the scraper blade machine, spray soil, further reduce soil temperature, get rid of the raise dust, scrape the scraper blade machine more water conservation than the water seal, more do benefit to the transportation of soil.
(4) The utility model discloses set up spraying system at the top of clean room, the nozzle overall arrangement of adoption is even, and the atomizing particle diameter is little, does not produce the nozzle phenomenon of dripping at the in-process of spraying, practices thrift water spray volume and reduces the raise dust effectively.
(5) Soil accessible material transporting device direct transfer that comes out from the scraper conveyor discharge gate of unloading is to dealing with the soil storage yard, avoids the disturbance once more of soil and produces the raise dust once more.
Drawings
Fig. 1 is the structure schematic diagram of the cooling, dedusting and discharging system of the high-temperature soil.
In the figure: 1-discharging screw conveyor, 2-spraying scraper conveyor, 3-dust removal chamber, 4-spraying system, 41-atomizing spray header, 42-electric control cabinet, 5-high temperature soil feeding port, 6-double screw conveying rod, 7-first cooling jacket water layer, 71-first circulating water inlet, 72-first circulating water outlet, 8-second cooling jacket water layer, 81-second circulating water inlet, 72-second circulating water outlet, 9-third cooling jacket water layer, 91-third circulating water inlet, 92-third circulating water outlet, 10-driving motor, 11-soil discharging port, 12-speed reducing motor, 13-soil feeding port, 14-spraying system, 15-sleeve roller chain and 16-soil discharging port.
Detailed Description
The technical solution of the present invention will be further specifically described below with reference to the accompanying drawings and the detailed description.
With reference to fig. 1, the utility model relates to a cooling and dedusting discharge system for high-temperature soil, which comprises an unloading screw conveyor 1, a spraying scraper conveyor 2 and a dust removal chamber 3 which are connected in sequence.
One end of the discharging screw conveyor 1 of the utility model is provided with a high temperature soil feeding port 5 closely connected with a discharging port of the thermal desorption chamber, and the other end of the discharging screw conveyor 1 is provided with a soil discharging port 11; the discharging screw conveyor 1 comprises a transmission motor 10 and a double-screw conveying rod 6, the double-screw conveying rod 6 is driven by the transmission motor 10 to rotate, and soil falling from a discharge port of the thermal desorption chamber is conveyed to a soil discharge port 11 through the double-screw conveying rod 6; a first cooling jacket water layer 7, a second cooling jacket water layer 8 and a third cooling jacket water layer 9 are sequentially arranged on the periphery of the double-helix conveying rod 6, the first cooling jacket water layer 7, the second cooling jacket water layer 8 and the third cooling jacket water layer 9 are arranged on the outer wall of the shell of the discharging screw conveyor 1, a first circulating water inlet 71 is formed in one end of the first cooling jacket water layer 7, and a first circulating water outlet 72 is formed in the other end of the first cooling jacket water layer; one end of the second temperature jacket water layer 8 is provided with a second circulating water inlet 81, and the other end is provided with a second circulating water outlet 82; one end of the third temperature jacket water layer 9 is provided with a third circulating water inlet 91, the other end is provided with a third circulating water outlet 92, and the conveyed high-temperature soil is cooled through the three-stage temperature-reducing jacket water layers; one end of the spraying scraper machine 2 is provided with a soil feeding hole 13 connected with the soil discharging hole 11, and the other end of the spraying scraper machine 2 is provided with a soil discharging hole 16 extending into the dust chamber 3; the dust removal chamber 3 is composed of a closed greenhouse, and a spraying system 4 for spraying wet dust is arranged at the top of the dust removal chamber 3.
The screw conveyer 1 of unloading is supported by telescopic support frame, and the contained angle that makes the screw conveyer of unloading and ground form through telescopic support frame is 5-10.
Spraying scraper 2 includes gear motor 12 and sleeve roller chain 15, and sleeve roller chain 15 is driven its rotation by gear motor 12, carries soil to soil blanking mouth 16 simultaneously.
Spraying scraper 2 is equipped with and is used for spouting wet spraying system 14 with soil, and this spraying system 14 is located sleeve roller chain 15's top.
The spraying scraper conveyor 2 is arranged in an upward inclined way, and the upward inclination angle is 30-50 degrees.
Spraying and scraping the trigger and for guaranteeing to spray intensity and the high temperature resistance intensity of scraping the trigger, scraping trigger whole frame and adopting carbon steel plate bending welding process, the motor adopts gear motor to be equipped with variable frequency speed regulator, and sleeve roller chain 15 adopts high strength high temperature resistance chain to be equipped with chain rupture protection device, speedtransmitter.
The 16 below of soil blanking mouth of scraping trigger 2 that sprays is equipped with and is used for transporting soil to the conveyer 17 of soil processing storage yard.
Spraying system 4 includes automatically controlled cabinet 42 and atomizing shower head 41, and atomizing shower head 41 evenly arranges at the top of clean room 3, makes the atomizing spray range cover the space of whole clean room 3. In order to ensure the atomization effect of the atomization spray head, the atomization spray head 41 is made of a wide-angle solid conical nozzle made of a stainless steel material, and is internally embedded with a stainless steel nozzle core and a stainless steel guide vane, and the anti-drip device is arranged in the atomization spray head. The single atomizing nozzle of the atomizing spray header 41 has the atomizing particle size of 30-200 microns, the flow rate of 30-100L/h and the pressure bearing range of 0.4-15 Mpa; the opening and closing and the flow of the atomizing spray header 41 are controlled by an electric control cabinet 42.
First cooling jacket water layer 7, second cooling jacket water layer 8, the three cooling jacket water layer of 9 three cooling jacket water layers of third cooling jacket water layer do not move independently respectively, mutual noninterference.
The utility model relates to a cooling dust removal discharge system of high temperature soil's concrete work process as follows:
the temperature of the soil treated by the thermal desorption chamber is 300-500 ℃, and the soil belongs to high-temperature soil. The high-temperature soil falls into a high-temperature soil feed inlet 5 of a discharge screw conveyer 1 which is tightly connected with the high-temperature soil from a discharge hole of the thermal desorption chamber, the angle between the discharge screw conveyer 1 and the ground is kept between 5 and 10 ℃, the high-temperature soil is driven by a transmission motor 10 and a double-screw conveying rod 6, upwards conveying in the conveyer casing, and fully contact with shells inner wall, the heat of soil passes through the casing and presss from both sides cover water layer 7 transmission to first cooling, tentatively cool down, constantly promote soil conveying upwards along with double helix transport pole 6, soil continues to press from both sides cover water layer 8 through the second cooling, third cooling presss from both sides cover water layer 9, the temperature that makes soil descends gradually, soil cooling process does not directly mix with the cooling water, existing effect avoids 6 drive in-process soil bonds on the hob of double helix transport pole, prevent the emergence of the jam condition, the recovery of the waste heat of being convenient for again. The more jacket water layers are, the longer the jacket water layers are, the more the temperature of the soil is reduced, but the overlong jacket water layers not only occupy a large amount of space, but also are not economical; therefore, the soil discharged from the discharge port 11 of the discharge conveyor still has higher temperature and continues to enter the spraying scraper conveyor 2, and is further cooled and dedusted under the cold water spraying effect of the spraying system 14; in order to ensure that the material conveying device 17 can be well connected with the soil blanking port 16, the angle between the spraying scraper conveyor and the ground is adjusted to be 30-50 degrees; in order to prevent the soil discharged from the soil blanking port 16 from generating dust during blanking and influencing the field production environment, the soil blanking port 16 is provided with a dust removal chamber 3 consisting of a closed greenhouse, and a series of atomizing nozzles 41 are uniformly arranged at the top of the dust removal chamber 3, so that fine particle dust generated in the soil blanking process is settled under the action of atomized water molecules, and the aim of dust removal is fulfilled; for further reaching the dust removal purpose, can also place material transporting device 17 at the blanking mouth of the scraper conveyor of unloading, make the soil after the cooling directly transport away, avoid the secondary disturbance, produce the raise dust once more.
It is to be understood that the embodiments described are only some embodiments of the invention, and 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.