CN-121672912-B - Oily sludge thermal desorption processing apparatus and processing system

CN121672912BCN 121672912 BCN121672912 BCN 121672912BCN-121672912-B

Abstract

The invention relates to the technical field related to environmental protection equipment, and discloses an oily sludge thermal desorption treatment device and a treatment system, which aim to solve the problems that the temperature is too high after sludge is dried and oil gas is discharged along with the sludge, a heat dissipation auger is connected to the bottom of a sludge output seat, the heat dissipation auger conveys the dried sludge into a transfer box, the bottom of the transfer box outputs the conveyed sludge to a sewage pipe through a discharge auger, because mud is pressed and hugs closely together in the blow off pipe, after nitrogen pipe inputs nitrogen gas to transfer incasement portion, most nitrogen gas is backward flow to the heat dissipation auger inside from the heat dissipation auger, not only realizes the cooling to output mud, still makes desorption incasement oil gas pressure be positive pressure, ensures the discharge of oil gas to this has realized nitrogen gas cooling and oil gas anti-reflux's effect.

Inventors

Xue Erxiang
WANG NAIQIAN
XUE WENGUI
MA LEI
XUE ZHIQIANG

Assignees

内蒙古汇方久兴环保科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260211

Claims (5)

1. An oily sludge thermal desorption treatment device, which is characterized by comprising: The desorption box (1), the side part is fixedly communicated with a sludge output seat (103), and the bottom part is fixedly provided with a transfer box (2); the cooling pipe (3) is fixed at one side of the transfer box (2) and is used for communicating the transfer box (2) with the sludge output seat (103); The sewage drain pipe (4) is fixedly communicated with one side of the transfer box (2), and a sewage blocking cover (401) pushed by a spring is movably arranged at the end part of the sewage drain pipe (4); A motor (5) is fixed at the side part of the transfer box (2), a transmission assembly (6) is fixedly arranged at the output end, and a heat dissipation auger (7) positioned at the inner side part of the cooling pipe (3) and a discharge auger (9) positioned at the inner side part of the blow-down pipe (4) are movably arranged on the rotating shaft of the transmission assembly (6) through a flower shaft (8) respectively; the middle part of one side of the transfer box (2) is fixedly communicated with a nitrogen pipe (11); the movement direction of the nitrogen is opposite to the sludge conveying direction of the heat dissipation auger (7), so that the temperature of the nitrogen to the sludge is reduced, and the sludge is prevented from carrying oil gas to be discharged outwards; an analyzer probe tube (12) is fixedly arranged on one side of the transfer box (2), and the analyzer probe tube (12) is connected with an explosion-proof VOCs analyzer; The ends of the discharging auger (9) and the heat dissipation auger (7) are movably provided with a connecting arm (10), the connecting arm (10) is guided by a rod piece on the inner side wall of the transfer box (2), and a spring is arranged between the connecting arm (10) and the rod piece; the bottom of the inner side of the transfer box (2) is fixedly connected with a blocking base (201), and one end of a discharging auger (9) is positioned in the blocking base (201); A material sealing seat (14) is movably arranged on the inner side of the end part of the cooling pipe (3), and the material sealing seat (14) and the end part of the heat dissipation auger (7) are movably arranged; The length value of the blow-down pipe (4) is twice the length of the discharging auger (9).
2. The thermal desorption treatment device for the oily sludge according to claim 1, wherein when the discharging auger (9) rotates, the sludge is conveyed into the sewage drain pipe (4) and extruded to form a relative seal, so that leakage of nitrogen from the sewage drain pipe (4) is prevented, and dynamic sealing and continuous sludge discharge are realized.
3. The thermal desorption treatment device for oil-containing sludge according to claim 1, wherein one end of the cooling tube (3) is connected with a flash buffer tube (301).
4. The thermal desorption treatment device for the oil-containing sludge according to claim 1, wherein an air hole (701) is formed in the side part of the heat dissipation auger (7), and an air overflow cover (13) pushed by a spring is movably arranged at the end part of the heat dissipation auger (7).
5. A treatment system of an oily sludge thermal desorption treatment device according to claim 1, comprising the steps of: S1, after sludge in a desorption box (1) is dried, the sludge is input into a cooling pipe (3) through a sludge output seat (103), and a motor (5) drives two flower shafts (8) to drive a heat dissipation auger (7) and a discharge auger (9) to synchronously rotate through a transmission assembly (6); S2, a heat dissipation auger (7) inputs the dried sludge into a transfer box (2), and the sludge falling into the bottom of the transfer box (2) is conveyed to a sewage drain pipe (4) through a discharge auger (9); s3, a discharge auger (9) is not arranged on the right side of the sewage discharge pipe (4), sludge is blocked by the sewage blocking cover (401), and is extruded mutually along with the increase of the sludge, so that nitrogen in the transfer box (2) is prevented from being discharged through the sewage discharge pipe (4); S4, extruding sludge to overcome spring pressure at the dirt blocking cover (401), and enabling the dirt blocking cover (401) to move right so as to discharge part of sludge; s5, nitrogen is conveyed to the transfer box (2) through the nitrogen pipe (11), most of the nitrogen is reversely input into the sludge output seat (103) through the heat dissipation auger (7) and cools the sludge, and the sludge is prevented from carrying oil gas and flowing back to the transfer box (2).

Description

Oily sludge thermal desorption processing apparatus and processing system Technical Field The invention relates to the technical field related to environmental protection equipment, in particular to an oily sludge thermal desorption treatment device and a treatment system. Background The thermal desorption treatment device for the oil-containing sludge is equipment for effectively treating the oil-containing sludge, and is widely applied to the oil-containing sludge treatment field in the industries of petroleum, chemical industry and the like by heating to volatilize oil in the sludge and separate the oil from solid particles so as to remove oil substances in the sludge, reduce the oil content, reduce environmental pollution and realize resource recycling or sludge innocent treatment. Conventionally, when the thermal desorption treatment device for oil-containing sludge is applied, the oil-containing sludge is firstly conveyed into a preheating unit to be primarily heated, then enters a thermal desorption main body reactor, and under the high-temperature environment and the specific residence time, the oil in the sludge is heated and volatilized to become gaseous and separated from solid residues, the gaseous oil is cooled by a condensing system and then is converted into liquid oil to be recycled, and the solid residues after deoiling are discharged from the device. In the practical application process, the sludge is directly discharged outwards after being dried, and at the moment, the temperature of the sludge is extremely high, and the high-temperature state brings great inconvenience to subsequent treatment work. On the other hand, the dried sludge inevitably carries a certain amount of oil and gas when discharged outwards. Currently, to solve this problem, a segmented sealing mode is adopted to prevent oil gas leakage. However, the sectional sealing mode affects the continuous discharging efficiency of the sludge, so that the treatment process is not smooth enough, and the overall treatment capacity is reduced. More seriously, once the sealing is leaked, oil gas flows out from the pollution discharge part and is fully mixed with external air. Because the oil gas has the characteristic of inflammability and explosiveness, when the oil gas is mixed with air to reach a certain proportion, the danger of air flow mixing explosion is extremely easy to generate, and the production safety is greatly threatened. Disclosure of Invention The invention provides an oily sludge thermal desorption treatment device and a treatment system, which have the advantages of nitrogen cooling and oil gas backflow prevention and are used for solving the problems of overhigh temperature and oil gas following sludge discharge after sludge drying in the background technology. The oil-containing sludge thermal desorption treatment device is characterized by comprising a desorption box, a cooling pipe, a sewage draining pipe, a motor, a transmission assembly, a heat dissipation auger, a discharging auger and a nitrogen pipe, wherein the side part of the desorption box is fixedly communicated with a sludge output seat, the bottom of the desorption box is fixedly provided with a transfer box, the cooling pipe is fixed on one side of the transfer box and is used for communicating the transfer box with the sludge output seat, the sewage draining pipe is fixedly communicated on one side of the transfer box, the end part of the sewage draining pipe is movably provided with a dirt blocking cover pushed by a spring, the motor is fixed on the side part of the transfer box, the transmission assembly is fixedly arranged at the output end, a rotating shaft of the transmission assembly is respectively and movably provided with the heat dissipation auger positioned at the inner side part of the cooling pipe and the discharging auger positioned at the inner side part of the sewage draining pipe through a flower shaft, the middle part of one side of the transfer box is fixedly communicated with the nitrogen pipe, and the nitrogen movement direction is opposite to the sludge conveying direction of the heat dissipation auger, so that the cooling of the sludge is realized, and the oil gas carried by the sludge is prevented from being discharged outwards. Further, when the discharging auger rotates, the sludge is conveyed into the sewage drain pipe and extruded to form relative sealing, so that leakage of nitrogen from the sewage drain pipe is prevented, and dynamic sealing and continuous sludge discharging are realized. Further, one end of the cooling tube is connected with a flash buffer tube. Further, the length of the blow-down pipe is twice the length of the discharging auger. Further, the side part of the heat dissipation auger is provided with an air hole, and the end part of the heat dissipation auger is movably provided with an air overflow cover pushed by a spring. Further, the analyzer probe is fixedly arranged on one side of the transfer