CN112664956A - Method for treating oil-containing solid slag - Google Patents
Method for treating oil-containing solid slag Download PDFInfo
- Publication number
- CN112664956A CN112664956A CN202011522420.8A CN202011522420A CN112664956A CN 112664956 A CN112664956 A CN 112664956A CN 202011522420 A CN202011522420 A CN 202011522420A CN 112664956 A CN112664956 A CN 112664956A
- Authority
- CN
- China
- Prior art keywords
- oil
- solid slag
- furnace
- tube
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007787 solid Substances 0.000 title claims abstract description 190
- 239000002893 slag Substances 0.000 title claims abstract description 153
- 238000000034 method Methods 0.000 title claims abstract description 55
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 73
- 239000003546 flue gas Substances 0.000 claims abstract description 73
- 238000003795 desorption Methods 0.000 claims abstract description 70
- 238000005192 partition Methods 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 46
- 239000000463 material Substances 0.000 claims description 26
- 238000005406 washing Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 8
- 230000014759 maintenance of location Effects 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 14
- 238000010438 heat treatment Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 238000004663 powder metallurgy Methods 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000013072 incoming material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000009270 solid waste treatment Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The disclosure relates to a method for treating oil-containing solid slag, which adopts an indirect thermal desorption vertical furnace to treat the oil-containing solid slag to be treated; the method comprises the following steps: enabling oil-containing solid slag to be treated to enter the indirect thermal desorption vertical furnace from a solid slag inlet, sequentially entering a first feeding area, a second feeding area and a furnace tube, enabling high-temperature flue gas to enter the indirect thermal desorption vertical furnace from the lower part, and performing partition wall heat exchange with the oil-containing solid slag to be treated in the furnace tube in a heat exchange area; and obtaining the treated solid slag from the bottom outlet of the furnace tube, obtaining low-temperature flue gas from the low-temperature flue gas outlet, and obtaining oil-containing steam from the oil-containing steam outlet. The method disclosed by the invention can effectively treat the oil-containing solid slag with high oil content, and has the advantages of high treatment efficiency and low energy consumption.
Description
Technical Field
The disclosure relates to the field of petrochemical engineering dangerous solid waste treatment, in particular to a method for treating oil-containing solid slag.
Background
The oil-containing solid slag is dangerous solid waste generated in the petrochemical industry and the oil exploitation process, and can be discharged into the environment after being treated to reach the national standard. One method commonly used in the treatment method of the oil-containing solid slag is an indirect thermal desorption method, and the method has two core devices, namely a rotary thermal desorption furnace and a spiral pushing material thermal desorption furnace.
The working principle of the rotary thermal desorption furnace is as follows: the solid slag containing oil is conveyed into the rotary drum, the burner is arranged outside the rotary drum, and the heat generated by the burner burning natural gas is transferred to the solid slag containing oil through the wall of the rotary drum. The rotary drum is horizontally arranged at a small inclination angle (the general inclination angle is 1-3 degrees), and due to the existence of the inclination angle of the rotary drum, when the rotary drum is driven by a motor to slowly rotate, the oil-containing solid slag in the rotary drum slowly rolls forwards, and the oil-containing solid slag is continuously heated in the process of rolling forwards. Along with the rise of the temperature of the oil-containing solid residues, oil in the oil-containing solid residues is gradually volatilized, and oil gas is pumped away by a tail gas fan and enters oil recovery equipment. When the oil-containing solid slag reaches a certain temperature, all oil in the oil-containing solid slag is volatilized, and the oil-containing solid slag is changed into common solid slag and is discharged into the environment. The rotary thermal desorption furnace has the advantages that: the particles of the solid residues containing oil can be larger, and the method is suitable for the repair work of the soil with low oil content (less than 2%). The disadvantages of the rotary thermal desorption furnace are: the equipment is huge, the heating area is small, the equipment is not suitable for oil-containing solid slag with high oil content, the oil-containing solid slag is easy to block and not roll, high-temperature oil gas is easy to leak due to a certain gap at two ends of the rotary drum, the energy consumption is high, the exhaust gas temperature of the combustion chamber is high, the rotary drum is horizontally arranged and is easy to deform at high temperature, air is easy to leak due to a certain gap at two ends of the rotary drum, the risk of flash explosion is caused when the air is leaked into the high-temperature oil gas, the occupied area of the. Therefore, the rotary thermal desorption furnace cannot be used in the thermal desorption process of the oil-containing solid slag with high oil content.
The working principle of the spiral pushing material thermal desorption furnace is as follows: the oil-containing solid slag is conveyed into the heating cylinder, high-temperature flue gas is arranged outside the heating cylinder, and the heat of the high-temperature flue gas is transferred to the oil-containing solid slag through the wall of the heating cylinder. The high-temperature flue gas comes from the flue gas furnace, and the natural gas burns in the flue gas furnace and produces high-temperature flue gas, and the high-temperature flue gas is sent to the heating chamber outside the heating barrel through the pipeline. The heating cylinder is horizontally arranged, the pushing screw rod is arranged in the heating cylinder, the pushing screw rod is driven by the motor to slowly rotate, the oil-containing solid residues are slowly pushed forwards, and the oil-containing solid residues are continuously heated in the process of moving forwards. Along with the rise of the temperature of the oil-containing solid residues, oil in the oil-containing solid residues is gradually volatilized, and oil gas is pumped away by a tail gas fan and enters oil recovery equipment. When the oil-containing solid slag reaches a certain temperature, all oil in the oil-containing solid slag is volatilized, and the oil-containing solid slag is changed into common solid slag and is discharged into the environment. The spiral pushing material thermal desorption furnace has the advantages that: the heating area of the equipment with the same volume is larger than that of the rotary thermal desorption furnace, the sealing between oil gas and external atmosphere is better and is not easy to leak, the flash explosion risk is eliminated, the oil-containing solid slag is not easy to block, and the smoke exhaust temperature of a combustion chamber is lower than that of the rotary thermal desorption furnace. The spiral pushing material thermal desorption furnace has the following defects: the pushing screw and the heating cylinder are easy to be blocked due to thermal deformation to scrap equipment, the heating area is small, the processing capacity of single equipment is low, the power consumption for driving the pushing screw by a motor is higher, the smoke exhaust temperature is higher, the occupied area of the equipment is large, and the tapping temperature of common solid slag is high. In a word, the spiral pushing material thermal desorption furnace can be used for the thermal desorption process of the oil-containing solid slag with higher oil content, but has larger improvement space.
Disclosure of Invention
The method can effectively treat the oil-containing solid slag with high oil content, and has high treatment efficiency and low energy consumption.
In order to achieve the purpose, the disclosure provides a method for treating oil-containing solid slag, which adopts an indirect thermal desorption vertical furnace to treat oil-containing solid slag to be treated;
the indirect thermal desorption vertical furnace comprises a shell which is axially arranged along the vertical direction, and the shell comprises a cylindrical section; a first tube plate, a second tube plate and a third tube plate are sequentially arranged in the cylindrical section from top to bottom at intervals, the edge of the first tube plate, the edge of the second tube plate and the edge of the third tube plate are respectively and independently connected with the inner wall of the cylindrical section in a sealing mode, so that a first feeding area is formed between the first tube plate and the top wall of the shell of the cylindrical section, a second feeding area is formed between the first tube plate and the second tube plate, and a heat exchange area is formed between the second tube plate and the third tube plate; the cylindrical section is provided with a furnace tube which vertically penetrates through the first feeding area, the second feeding area and the heat exchange area along the axial direction, two ends of the furnace tube are opened, the top end of the furnace tube penetrates through the first tube plate to be communicated with the first feeding area, and the bottom end of the furnace tube penetrates through the third tube plate; at least part of the side wall of the furnace tube positioned in the second feeding area is provided with micropores;
the lower end of the furnace tube is formed into a solid slag outlet, the top of the shell is provided with a solid slag inlet, and the shell positioned in the second feeding area is provided with an oil-containing steam outlet; a low-temperature flue gas outlet is formed in the side wall of the shell positioned at the upper part of the heat exchange area, and a high-temperature flue gas inlet is formed in the side wall of the shell positioned at the lower part of the heat exchange area;
the method comprises the following steps: enabling the oil-containing solid slag to be treated to enter the indirect thermal desorption vertical furnace from the solid slag inlet, sequentially entering the first feeding area, the second feeding area and the furnace tube, enabling high-temperature flue gas to enter the indirect thermal desorption vertical furnace from the lower part, and performing partition wall heat exchange between the heat exchange area and the oil-containing solid slag to be treated in the furnace tube; and obtaining treated solid slag from the bottom outlet of the furnace tube, obtaining low-temperature flue gas from the low-temperature flue gas outlet, and obtaining oil-containing steam from the oil-containing steam outlet.
Optionally, the housing further comprises a conical section; the conical section is arranged below the cylindrical section to form a blanking area, and a bottom outlet of the furnace tube is communicated with the blanking area; the circumferential edge of the bottom surface of the conical section is hermetically connected with the edge of the bottom of the cylindrical section, a solid slag outlet is formed in the conical tip of the conical section, steam stripping steam inlets are further formed in the conical section, and the number of the steam stripping steam inlets is 1-6;
the method further comprises the following steps: and feeding stripping steam into the indirect thermal desorption vertical furnace from the stripping steam inlet, and contacting with solid slag from the bottom end outlet of the furnace tube in the blanking area to perform stripping and heat exchange.
Optionally, the flow rate of the stripping steam is 5-25 wt% and the inlet temperature is 120-180 ℃ based on the weight flow rate of the solid slag.
Optionally, an oil and gas fan is used to draw air from the oil-containing steam outlet so that the pressure in the furnace tube is-0.5 to-5 KPa, and the oil-containing steam is obtained from the outlet of the oil and gas fan.
Optionally, the method further comprises: feeding the oil-containing steam obtained from the oil-containing steam outlet into a first water washing tower for water washing to obtain non-condensable gas and liquid oil, and feeding the non-condensable gas into a high-temperature flue gas furnace as fuel;
and feeding gas obtained from a gas outlet of the high-temperature flue gas furnace into the heat exchange area as the high-temperature flue gas.
Optionally, the method further comprises: before entering the indirect thermal desorption vertical furnace, the oil-containing solid slag to be treated exchanges heat with the low-temperature flue gas obtained from the low-temperature flue gas outlet in a solid slag hopper, then enters the cyclone separator for gas-solid separation, and the solid obtained by the gas-solid separation is sent into the indirect thermal desorption vertical furnace.
Optionally, the inlet temperature of the high-temperature flue gas is 450-800 ℃, and preferably 550-700 ℃;
the retention time of the oil-containing solid slag to be treated in the furnace tube is 1200-7200 s;
the oil content of the oil-containing solid residues to be treated is 2-35 wt%, the oil content of the treated solid residues is 0.05-2 wt%, and the temperature is 130-160 ℃.
Optionally, a baffle plate arranged along the radial direction is further included in the heat exchange zone; the number of the baffle plates is 4-12, and the ratio of the cylinder diameter of the cylinder section to the width of the baffle plates is 1: (0.3-0.8).
Optionally, the diameter of the furnace tube is 150-350 mm, the tube spacing of the furnace tube is 1.5-3 times of the diameter of the furnace tube, and the material of the furnace tube is one or more selected from carbon steel, stainless steel and chrome molybdenum steel;
the aperture of the micropores on the furnace tube in the first feeding area is 500-5000 nm.
Optionally, the indirect thermal desorption vertical furnace further comprises a distributing device, the distributing device comprises a power mechanism, a connecting rod and a distributing rake, one end of the connecting rod is connected with the power mechanism, the other end of the connecting rod is connected with the distributing rake, and the distributing rake is arranged above the first tube plate in the first feeding area;
the distribution rake comprises a horizontal rake rod and a plurality of rake teeth connected to the horizontal rake rod at intervals, the rake teeth vertically extend along the axial direction, one end of each rake tooth is connected with the horizontal rake rod, the other end of each rake tooth is a free end, and one end of each connecting rod is connected with the horizontal rake rod;
the method further comprises the following steps: and enabling the oil-containing solid slag to be treated to enter the indirect thermal desorption vertical furnace, wherein the oil-containing solid slag to be treated is uniformly distributed through the material distribution device.
By the technical scheme, the method can be used for treating the oil-containing solid slag with high oil content, and is high in treatment efficiency and low in energy consumption.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a schematic structural diagram of an indirect thermal desorption vertical furnace embodiment in example 1 of the present disclosure;
FIG. 2 is a schematic structural diagram of a specific embodiment of a system for treating solid slag containing oil according to example 1 of the present disclosure, which includes an indirect thermal desorption vertical furnace according to the present disclosure;
fig. 3 is a schematic view of a furnace tube arrangement of the indirect thermal desorption vertical furnace in cross section according to example 1 of the present disclosure.
Description of the reference numerals
1 cylindrical section 11 second feed zone 12 Heat exchange zone
111 first tube sheet 112 second tube sheet 113 third tube sheet
13 furnace tube 14 solid slag inlet 15 oil-containing steam outlet
16 low-temperature flue gas outlet, 17 high-temperature flue gas inlet 2 conical section
18 stripping steam inlet 19 baffle 20 expander
21 elastic connecting piece 22 distributing device 221 rake teeth
222 horizontal rake 23 pressure detection port 24 thermocouple
25 material level detection port 26 powder metallurgy film tube
101 cyclone 102 indirect thermal desorption vertical furnace 103 solid slag hopper
104 high-temperature flue gas furnace 105 airflow conveying fan 106 oil gas fan
107 blanking rotary valve 108 solid slag discharging speed control rotary valve
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, unless stated to the contrary, use of directional words such as "up and down" generally means up and down when the system of the present disclosure is capable of normal use, and reference is made to the orientation of the figures of the drawings.
The present disclosure provides a method for treating oil-containing solid slag, which adopts an indirect thermal desorption vertical furnace 102 to treat oil-containing solid slag to be treated;
the indirect thermal desorption vertical furnace 102 comprises a shell which is axially arranged along the vertical direction, and the shell comprises a cylinder section 1; a first tube plate 111, a second tube plate 112 and a third tube plate 113 are sequentially arranged in the cylinder section from top to bottom at intervals, the edge of the first tube plate 111, the edge of the second tube plate 112 and the edge of the third tube plate 113 are respectively and independently connected with the inner wall of the cylinder section 1 in a sealing manner, so that a first feeding area is formed between the first tube plate 111 and the top wall of the shell of the cylinder section, a second feeding area 11 is formed between the first tube plate 111 and the second tube plate 112, and a heat exchange area 12 is formed between the second tube plate 112 and the third tube plate 113; the cylindrical section 1 is provided with a furnace tube 13 which vertically penetrates through the first feeding area, the second feeding area 11 and the heat exchange area 12 along the axial direction, two ends of the furnace tube are opened, the top end of the furnace tube passes through the first tube plate 111 to be communicated with the first feeding area, and the bottom end of the furnace tube passes through the third tube plate 113; at least part of the side wall of the furnace tube positioned in the second feeding area 11 is provided with micropores;
the lower end of the furnace tube 13 is formed into a solid slag outlet, the top of the shell is provided with a solid slag inlet 14, and the shell positioned in the second feeding area 11 is provided with an oil-containing steam outlet 15; a low-temperature flue gas outlet 16 is formed in the side wall of the shell positioned at the upper part of the heat exchange region 12, and a high-temperature flue gas inlet 17 is formed in the side wall of the shell positioned at the lower part of the heat exchange region 12;
the method comprises the following steps: the oil-containing solid slag to be treated enters the indirect thermal desorption vertical furnace from the solid slag inlet 14, and sequentially enters the first feeding area, the second feeding area 11 and the furnace tube 13, so that high-temperature flue gas enters the indirect thermal desorption vertical furnace from the lower part, and the heat exchange area 12 and the oil-containing solid slag to be treated in the furnace tube 13 carry out partition wall heat exchange; the treated solid slag is obtained from the bottom outlet of the furnace tube 13, the low-temperature flue gas is obtained from the low-temperature flue gas outlet 16, and the oil-containing steam is obtained from the oil-containing steam outlet 15.
Compared with the existing method for treating solid slag by adopting a rotary thermal desorption furnace and a spiral pushing material thermal desorption furnace, the method disclosed by the invention can be used for treating the solid slag with high oil content, and has the advantages of high treatment efficiency and low energy consumption.
In one embodiment of the present disclosure, the first tube sheet 111 and the second tube sheet 112 are each independently a fixed tube sheet; the third tube plate 113 is a movable tube plate, the edge of the movable tube plate is hermetically connected with the inner wall of the cylinder section 1 through an elastic connecting piece 21, and the elastic connecting piece has elasticity along the axial direction of the indirect thermal desorption vertical furnace. The first tube plate, the second tube plate and the third tube plate are respectively welded with the furnace tube, the edge of the first tube plate and the edge of the second tube plate are respectively welded with the inner wall of the shell to support the shell, the active tube plate can freely stretch and retract when the furnace tube is heated and expanded, and the furnace tube cannot bend when heated and expanded under the action of the self gravity of the furnace tube and the vertical gravity of solid residues containing oil. The specific type of the elastic connecting piece is not limited, for example, the elastic connecting piece can be one or more of oil-gas sealing filler, high-temperature-resistant carbon fiber filler and high-temperature-resistant ceramic fiber filler, the elastic connecting piece can prevent high-temperature flue gas in the flue gas flowing space from escaping, and can also prevent external cold air from being sucked into the flue gas flowing space to reduce the temperature of the high-temperature flue gas.
According to the present disclosure, the housing further comprises a conical section 2; the conical section 2 is arranged below the cylindrical section 1 to form a blanking area, and the outlet at the bottom end of the furnace tube 13 is communicated with the blanking area; the circumferential edge of the bottom surface of the conical section 2 is hermetically connected with the edge of the bottom of the cylindrical section 1, a solid slag outlet is formed in the conical tip of the conical section 2, stripping steam inlets 18 are further formed in the conical section, the number of the stripping steam inlets 18 can be changed in a large range, for example, the number of the stripping steam inlets can be 1-10, preferably 1-6, more preferably 2, 4 or 6, further preferably, the stripping steam inlets are symmetrically distributed on the conical section, stripping steam enters at multiple points, so that the stripping effect is better, and the cooling effect of solid slag is more uniform;
the method further comprises the following steps: and the stripping steam is sent into the indirect thermal desorption vertical furnace from a stripping steam inlet 18 and contacts with solid slag from the bottom end outlet of the furnace tube 13 in the blanking zone to carry out stripping and heat exchange. The steam stripping steam and the solid slag are in countercurrent contact, the solid slag heat is continuously taken away when the steam stripping steam rises, most heat of the high-temperature solid slag is recovered, and therefore the treatment energy consumption of the system is reduced, and the steam simultaneously lifts the oil gas carried by the solid slag. When the steam reaches the lower end of the furnace tube, the temperature is close to the solid slag outlet temperature of the furnace tube, the high-temperature steam enters the furnace tube to drive the oil gas to move upwards, and the effects of blowing solid slag and stripping the oil gas are achieved, so that the oil-containing solid slag is easier to thermally desorb. Meanwhile, the steam can be used as a heat transfer medium, when the high-temperature steam flows in the furnace tube, the temperature of the oil-containing solid slag in the furnace tube is more uniform, the heat of the high-temperature flue gas is favorably transferred to the oil-containing solid slag in the furnace tube through the tube wall of the furnace tube, the treatment energy consumption is reduced, the heat transfer of the solid is improved, and the thermal desorption efficiency is improved. Wherein the stripping steam may be low pressure saturated steam.
According to the present disclosure, the flow rate of the stripping steam may vary within a wide range, and in one embodiment of the present disclosure, the flow rate of the stripping steam may be 5 to 25 wt% and the inlet temperature may be 120 to 180 ℃, based on the weight flow rate of the solid slag, and preferably, the flow rate of the stripping steam is 5 to 15 wt% and the inlet temperature is 120 to 150 ℃, within the above range, the heat may be recovered more effectively and the residual oil in the solid slag may be recovered sufficiently.
According to the present disclosure, the oil gas fan 106 can be used to extract air from the oil-containing steam outlet 15, so that the pressure in the furnace tube 13 is-0.5 to-5 KPa, preferably-1 to-3 KPa, and the oil-containing steam is obtained from the outlet of the oil gas fan 106, so as to further recover and treat the oil-containing steam.
According to the present disclosure, the method may further comprise: sending the oil-containing steam obtained from the oil-containing steam outlet into a first water washing tower for water washing to obtain non-condensable gas and liquid oil, and sending the non-condensable gas into a high-temperature flue gas furnace 104 as fuel; the gas obtained from the outlet of the high temperature flue gas furnace 104 is fed into the heat exchange zone 12 as high temperature flue gas. By adopting the method, resources can be further recycled, and the energy consumption of the system is reduced.
According to the present disclosure, the method may further comprise: before entering the indirect thermal desorption vertical furnace, oil-containing solid slag to be treated is subjected to heat exchange with low-temperature flue gas obtained from a low-temperature flue gas outlet in a solid slag hopper 103, then enters a cyclone separator 101 for gas-solid separation, solid obtained by the gas-solid separation is sent into the indirect thermal desorption vertical furnace, moisture in the oil-containing solid slag is dried by the heat of the low-temperature flue gas, the temperature of the oil-containing solid slag is improved to a certain extent, and the heat in the low-temperature flue gas is further recycled, so that the overall energy consumption of the system is further reduced. In one embodiment, the solids outlet of the cyclone is provided with a blanking rotary valve 107, the blanking rotary valve separates the cyclone from the vertical furnace, the oil-containing solid slag is transferred from the cyclone at the upper side to the first feeding area at the lower side when the blanking rotary valve rotates, and the gas phase (large air ratio) in the cyclone is completely separated from the gas phase (large oil-gas ratio) of the indirect thermal desorption vertical furnace. Further preferably, the gas phase of the cyclone separator is pumped out by the airflow conveying fan 105 and sent to the second water washing tower, and the dust is washed by water and discharged.
According to the present disclosure, in order to ensure sufficient heat exchange between the high-temperature flue gas and the oil-containing solid slag and improve the treatment effect of thermal desorption, the inlet temperature of the high-temperature flue gas is 450-800 ℃, and preferably 550-700 ℃; the retention time of the oil-containing solid slag to be treated in the furnace tube is 1200-7200 s; the oil content of the oil-containing solid residues to be treated is 2-35 wt%, the oil content of the treated solid residues is 0.05-2 wt%, and the temperature is 130-160 ℃. Under the conditions, the oil in the oil-containing solid residues can be removed to the maximum extent, the cleanness of the solid residues obtained through heat exchange treatment is ensured, and the solid residues are low in temperature and free of scalding risk. The flow of the high-temperature flue gas is not particularly limited, and can be changed in a large range and determined according to the treatment capacity of the oil-containing solid slag.
According to a specific embodiment of the present disclosure, in order to control the flow of the oil-containing solid slag in the furnace tube, the solid slag outlet is provided with the solid slag discharge speed control rotary valve 108, so that the system of the present disclosure can control the flow of the material in the furnace tube according to the actual processing requirement, the solid slag temperature at the outlet at the lower end of the furnace tube can reach the process index, and the flexibility and controllability of the use of the system of the present disclosure are improved. Preferably, a thermocouple 24 can be arranged at the outlet of the furnace tube to measure the temperature of the solid slag out of the furnace tube, the temperature determines the oil content of the common solid slag, and the higher the temperature is, the lower the oil content of the common solid slag is. The temperature of the solid slag out of the furnace tube is determined by the retention time of the oil-containing solid slag in the furnace tube, and the retention time of the solid slag in the furnace tube can be conveniently controlled by controlling the discharging speed of the common solid slag at the bottom of the discharging cone, so that the flexibility and the high efficiency of the method are further improved. The number of the furnace tubes is not particularly limited in the present disclosure, and can be selected according to the required heat exchange area, and in a specific embodiment, the number of the furnace tubes is 10 to 20.
Baffles 19 disposed radially may also be included in heat exchange zone 12 in accordance with the present disclosure; the number of the baffle plates 19 is 4-12, preferably 8-12, and the ratio of the cylinder diameter of the cylinder section 1 to the width of the baffle plates 19 is 1: 0.3 to 0.8, preferably 1: 0.6 to 0.8. The high-temperature flue gas flows back and forth in the hearth under the guide of the flue gas baffle plate, so that the contact time and the contact flow speed of the flue gas and the furnace tube are increased, the heat exchange coefficient of the flue gas and the furnace tube is increased, a certain enhanced heat transfer effect is realized, and the heat exchange efficiency and the treatment capacity of the method are further improved.
According to the disclosure, as shown in fig. 1, the expander 20 is further disposed on the sidewall of the second feeding area, and when the thermal expansion amounts of the furnace tube and the furnace body are inconsistent, the difference of the expansion amounts can be absorbed by the corrugated expander, so that the indirect thermal desorption vertical furnace of the disclosure has better stability, and further, the stability of the oil-containing solid slag treatment method of the disclosure can be enhanced. The specific type of expander 20 of the present disclosure is not limited and may be selected from, for example, bellows expanders.
According to the present disclosure, the diameter of the furnace tube 13 is 150-350 mm, preferably 200-250 mm, the wall thickness of the furnace tube may be 4-12 mm, preferably 5-8 mm, the tube pitch of the furnace tube 13 is 1.5-3 times, preferably 1.5-2 times, the diameter of the furnace tube 13, and the material of the furnace tube 13 may be selected according to the furnace temperature, for example, may be selected from one of carbon steel, stainless steel and chrome molybdenum steel; the aperture of the micropores on the furnace tube in the second feeding area is 500-5000 nm, preferably 500-1500 nm. The arrangement mode of the furnace tubes is not limited in the present disclosure, and can be selected according to the needs, for example, the furnace tubes can be arranged in a regular triangle.
According to the present disclosure, the furnace tube with the micropores located in the second feeding region may be a powder metallurgy membrane tube 26.
According to the disclosure, the indirect thermal desorption vertical furnace further comprises a distributing device 22, wherein the distributing device 22 comprises a power mechanism, a connecting rod and a distributing rake, one end of the connecting rod is connected with the power mechanism, the other end of the connecting rod is connected with the distributing rake, and the distributing rake is arranged above the first tube plate 111 in the first feeding area; the distribution rake comprises a horizontal rake rod and a plurality of rake teeth 221 which are connected to the horizontal rake rod 222 at intervals, the rake teeth 221 vertically extend along the axial direction, one end of each rake tooth is connected with the horizontal rake rod 222, the other end of each rake tooth is a free end, and one end of each connecting rod is connected with the rake rod; the method further comprises the following steps: the oil-containing solid slag to be treated enters a vertical furnace for indirect thermal desorption, and is uniformly distributed by a distributing device. The power mechanism is well known to those skilled in the art and may include a motor and a speed reducer, in one embodiment, after the motor rotates and the rotational speed is reduced by the speed reducer, the motor drives the connecting rod to rotate and then drives the distribution rake to rotate, and when the distribution rake rotates, the oil-containing solid slag is uniformly distributed on the whole first fixed tube plate and further uniformly distributed in each furnace tube. The method is favorable for further improving the treatment efficiency and the treatment capacity of the oil-containing solid slag.
In a preferred embodiment, a material level detection port 25 is arranged at the upper part of the first feeding area, and a material level meter can be arranged on the material level detection port 25 to detect the material height of the oil-containing solid slag in the material distribution box and adjust the speed of the incoming material according to the signal.
The present disclosure is further illustrated by the following examples, but is not to be construed as being limited thereby.
The oil-containing solid residue is oil-containing solid residue obtained after drying sludge in an oil refinery, and the oil content is 17.5 wt%.
Example 1
The embodiment is an embodiment of an oil-containing solid slag treatment system comprising an indirect thermal desorption vertical furnace.
As shown in fig. 2, the oil-containing solid slag treatment system comprises an indirect thermal desorption vertical furnace 102, a high-temperature flue gas furnace 104, a cyclone separator 101 and a solid slag hopper 103. An outlet of the solid slag hopper 103 is communicated with a solid slag inlet of the first feeding area through a first pipeline, and an outlet of the solid slag hopper is also communicated with a low-temperature flue gas outlet of a heat exchange area of the indirect thermal desorption vertical furnace 102 through a second pipeline; a solid outlet of the cyclone separator 101 is communicated with a solid slag inlet of the first feeding area; the gas outlet of the cyclone separator 101 is communicated with an airflow conveying fan 105, and the outlet of the airflow conveying fan 105 is communicated with the second water washing tower; an oil-containing steam outlet 15 of the indirect thermal desorption vertical furnace is communicated with an outlet of an oil-gas fan 106, and a gas outlet of the oil-gas fan 106 is communicated with the second washing tower; the gas outlet of the high-temperature flue gas furnace 104 is communicated with the high-temperature flue gas inlet of the heat exchange area.
As shown in fig. 1, the indirect thermal desorption vertical furnace 102 includes a housing and a distribution device 22 arranged in the vertical direction in the axial direction. The shell comprises a cylindrical section 1 and a conical section 2, the conical section 2 is arranged below the cylindrical section 1 to form a blanking area, an outlet at the bottom end of the furnace tube 13 is communicated with the blanking area, the circumferential edge of the bottom surface of the conical section 2 is welded with the edge of the bottom of the cylindrical section 1, a solid slag outlet is formed in the conical tip of the conical section 2, and a solid slag discharging speed control rotary valve 108 is arranged at the solid slag outlet; the conical section is provided with 4 stripping steam inlets 18. The cylindrical section comprises a first tube plate 111, a second tube plate 112 and a third tube plate 113 which are sequentially arranged from top to bottom at intervals, the edge of the first tube plate 111, the edge of the second tube plate 112 and the edge of the third tube plate 113 are respectively and independently connected with the inner wall of the cylindrical section 1 in a sealing manner, so that a first feeding area is formed between the first tube plate 111 and the top wall of the cylindrical section shell, a second feeding area 11 is formed between the first tube plate 111 and the second tube plate 112, and a heat exchange area 12 is formed between the second tube plate 112 and the third tube plate 113; the cylindrical section 1 is provided with a furnace tube 13 which vertically penetrates through the first feeding area, the second feeding area 11 and the heat exchange area 12 along the axial direction, two ends of the furnace tube are opened, the top end of the furnace tube passes through the first tube plate 111 to be communicated with the first feeding area, and the bottom end of the furnace tube passes through the third tube plate 113; at least part of the side wall of the furnace tube positioned in the second feeding area 11 is provided with micropores; the lower end of the furnace tube 13 is formed into a solid slag outlet, the top of the shell is provided with a solid slag inlet 14, and the shell positioned in the second feeding area 11 is provided with an oil-containing steam outlet 15; a low-temperature flue gas outlet 16 is formed in the side wall of the shell positioned at the upper part of the heat exchange region 12, and a high-temperature flue gas inlet 17 is formed in the side wall of the shell positioned at the lower part of the heat exchange region 12; the side wall of the second feeding area 11 is also provided with an expander 20, and the upper part of the first feeding area is also provided with a material level detection port 25; the edge of the first tube plate 111 and the edge of the second tube plate 112 are respectively and independently welded with the inner wall of the cylinder section 1 in a sealing way, and the edge of the third tube plate is connected with the inner wall of the cylinder section in a sealing way through an elastic connecting piece 21; a thermocouple 24 is arranged at the outlet of the lower end of the furnace tube, the arrangement mode of the furnace tube is shown in figure 3, the diameter of the furnace tube is 200mm, and the tube spacing is 1.5 times of the diameter of the furnace tube; part of the furnace tubes in the second feeding zone are powder metallurgy membrane tubes 26 with micropores (the pore diameter is 600 nm); the heat exchange zone also comprises 4 baffles 19 arranged along the radial direction, and the ratio of the cylinder diameter of the heat exchange zone 12 to the width of the baffles 19 is 1: 0.8. the distributing device 22 comprises a power mechanism, a connecting rod and a distributing rake, one end of the connecting rod is connected with the power mechanism, the other end of the connecting rod is connected with the distributing rake, and the distributing rake is arranged above the first tube plate in the first feeding area. The distribution rake comprises a horizontal rake rod and a plurality of rake teeth 221 connected to the horizontal rake rod 222 at intervals, the rake teeth 221 vertically extend along the axial direction, one end of each rake tooth is connected with the horizontal rake rod 222, the other end of each rake tooth is a free end, and one end of each connecting rod is connected with the horizontal rake rod.
Example 2
This example is an example of treating solid slag containing oil using the indirect thermal desorption vertical furnace of example 1.
The oil-containing solid slag to be treated enters an indirect thermal desorption vertical furnace from a solid slag inlet 14 at the weight flow of 10000kg/h and sequentially enters a first feeding area, the oil-containing solid slag to be treated enters a second feeding area 11 and a furnace tube 13 (the retention time in the furnace tube is 2700s) after being uniformly distributed by a material distribution device in the first feeding area, and high-temperature flue gas (the inlet temperature is 600 ℃, the flow is 8428 m)3And h) entering the indirect thermal desorption vertical furnace from the lower part, and performing wall heat exchange between the vertical furnace and oil-containing solid slag to be treated in the furnace tube 13 in the heat exchange area 12. The treated solid slag is obtained from the bottom outlet of the furnace tube 13, the low-temperature flue gas is obtained from the low-temperature flue gas outlet 16, and the oil-containing steam is obtained from the oil-containing steam outlet 15. And (3) extracting air from the oil-containing steam outlet 15 by using the oil-gas fan 106 so that the pressure in the furnace tube 13 is-1.7 KPa, and obtaining the oil-containing steam from the outlet of the oil-gas fan 106. Sending the oil-containing steam obtained from the oil-containing steam outlet into a first water washing tower for water washing to obtain non-condensable gas and liquid oil, and sending the non-condensable gas into a high-temperature flue gas furnace 104 as fuel; wherein, the high-temperature flue gas furnaceThe gas obtained at the outlet of the gas supply unit 104 is fed as high-temperature flue gas into the heat exchange zone 12. And (3) feeding stripping steam (the flow is 800kg/h, the inlet temperature is 132 ℃) into the indirect thermal desorption vertical furnace from a stripping steam inlet 18, contacting with solid slag from the bottom end outlet of the furnace tube 13 in a blanking area for stripping and heat exchange, and then feeding the stripping steam into the furnace tube to contact with the oil-containing solid slag.
Before the oil-containing solid slag to be treated enters the indirect thermal desorption vertical furnace, the oil-containing solid slag to be treated exchanges heat with low-temperature flue gas obtained from a low-temperature flue gas outlet in a solid slag hopper 103, then enters a cyclone separator 101 for gas-solid separation, solid obtained by the gas-solid separation is sent into the indirect thermal desorption vertical furnace from a solid slag inlet 14, and gas is sent into a second washing tower for washing.
The oil content of the solid slag obtained after the treatment is 0.2 weight percent, the temperature is 145 ℃, the treatment capacity is 10 tons/hour of the oil-containing solid slag, and the energy consumption of the system is 53.2kg of standard oil/ton of the oil-containing solid slag.
Example 3
The same method as in example 2 was used to treat the oil-containing solid slag, except that no stripping steam was introduced into the indirect thermal desorption vertical furnace.
The oil content of the solid residue obtained after treatment is 0.35 wt%, the temperature is 580 ℃, a discharge hole is sprayed with water, the treatment capacity is 8.7 tons/hour of the oil-containing solid residue, and the energy consumption of a system is 56kg standard oil/ton of the oil-containing solid residue.
Comparative example 1
The oil-containing solid slag is treated by adopting a spiral pushing material thermal desorption furnace in the prior art.
When the oil-containing solid slag (the oil content is 17.5 wt%) is treated, the oil content of the treated solid slag is 0.4 wt%, the temperature is 620 ℃, a discharge hole is sprayed with water, the treatment capacity is 1.5 tons/hour of the oil-containing solid slag, and the energy consumption of a system is 147kg of standard oil/ton of the oil-containing solid slag.
As can be seen from the examples and the comparative examples, the method disclosed by the invention can be used for efficiently treating the oil-containing solid slag with high oil content, and has the advantages of large treatment capacity and low energy consumption. Preferably, the stripping steam is introduced into the indirect thermal desorption vertical furnace, so that the treatment efficiency of the oil-containing solid slag can be further improved, and the treatment energy consumption is reduced.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. The method for treating the oil-containing solid slag is characterized in that the oil-containing solid slag to be treated is treated by adopting an indirect thermal desorption vertical furnace (102);
the indirect thermal desorption vertical furnace (102) comprises a shell which is axially arranged along the vertical direction, and the shell comprises a cylinder section (1); a first tube plate (111), a second tube plate (112) and a third tube plate (113) are sequentially arranged in the cylindrical section from top to bottom at intervals, the edge of the first tube plate (111), the edge of the second tube plate (112) and the edge of the third tube plate (113) are respectively and independently in sealing connection with the inner wall of the cylindrical section (1), so that a first feeding area is formed between the first tube plate (111) and the top wall of the cylindrical section shell, a second feeding area (11) is formed between the first tube plate (111) and the second tube plate (112), and a heat exchange area (12) is formed between the second tube plate (112) and the third tube plate (113); the cylindrical section (1) is provided with a furnace tube (13) which vertically penetrates through the first feeding area, the second feeding area (11) and the heat exchange area (12) along the axial direction, two ends of the furnace tube are opened, the top end of the furnace tube penetrates through the first tube plate (111) to be communicated with the first feeding area, and the bottom end of the furnace tube penetrates through the third tube plate (113); at least part of the side wall of the furnace tube positioned in the second feeding area (11) is provided with micropores;
the lower end of the furnace tube (13) is formed into a solid slag outlet, the top of the shell is provided with a solid slag inlet (14), and the shell positioned in the second feeding area (11) is provided with an oil-containing steam outlet (15); a low-temperature flue gas outlet (16) is formed in the side wall of the shell positioned at the upper part of the heat exchange region (12), and a high-temperature flue gas inlet (17) is formed in the side wall of the shell positioned at the lower part of the heat exchange region (12);
the method comprises the following steps: the oil-containing solid slag to be treated enters the indirect thermal desorption vertical furnace from the solid slag inlet (14), sequentially enters the first feeding area, the second feeding area (11) and the furnace tube (13), high-temperature flue gas enters the indirect thermal desorption vertical furnace from the lower part, and the heat exchange area (12) and the oil-containing solid slag to be treated in the furnace tube (13) carry out partition wall heat exchange; and obtaining treated solid slag from the bottom outlet of the furnace tube (13), obtaining low-temperature flue gas from the low-temperature flue gas outlet (16), and obtaining oil-containing steam from the oil-containing steam outlet (15).
2. The method according to claim 1, wherein the housing further comprises a conical section (2); the conical section (2) is arranged below the cylindrical section (1) to form a blanking area, and a bottom outlet of the furnace tube (13) is communicated with the blanking area; the circumferential edge of the bottom surface of the conical section (2) is hermetically connected with the edge of the bottom of the cylindrical section (1), a solid slag outlet is formed in the conical tip of the conical section (2), stripping steam inlets (18) are further formed in the conical section, and the number of the stripping steam inlets (18) is 1-6;
the method further comprises the following steps: and the stripping steam is fed into the indirect thermal desorption vertical furnace from the stripping steam inlet (18) and contacts with the solid slag from the bottom end outlet of the furnace tube (13) in the blanking area for stripping and heat exchange.
3. The method according to claim 2, wherein the flow rate of the stripping steam is 5 to 25 wt% and the inlet temperature is 120 to 180 ℃ based on the weight flow rate of the solid slag.
4. The method of claim 1, wherein the oil-containing vapor is drawn from the oil-containing vapor outlet (15) using an oil and gas blower (106) such that the pressure in the furnace tube (13) is from-0.5 to-5 KPa, the oil-containing vapor being obtained from the outlet of the oil and gas blower (106).
5. The method of claim 1, wherein the method further comprises: feeding the oil-containing steam obtained from the oil-containing steam outlet into a first water washing tower for water washing to obtain non-condensable gas and liquid oil, and feeding the non-condensable gas into a high-temperature flue gas furnace (104) as fuel;
and feeding gas obtained from a gas outlet of the high-temperature flue gas furnace (104) into the heat exchange area (12) as the high-temperature flue gas.
6. The method of claim 1, wherein the method further comprises: before entering the indirect thermal desorption vertical furnace, the oil-containing solid slag to be treated exchanges heat with the low-temperature flue gas obtained from the low-temperature flue gas outlet in a solid slag hopper (103), then enters the cyclone separator (101) for gas-solid separation, and the solid obtained by the gas-solid separation is sent into the indirect thermal desorption vertical furnace.
7. The method according to claim 1, wherein the inlet temperature of the high temperature flue gas is 450-800 ℃, preferably 550-700 ℃;
the retention time of the oil-containing solid slag to be treated in the furnace tube is 1200-7200 s;
the oil content of the oil-containing solid residues to be treated is 2-35 wt%, the oil content of the treated solid residues is 0.05-2 wt%, and the temperature is 130-160 ℃.
8. A method as claimed in claim 1, wherein the heat transfer zone (12) further comprises radially disposed baffles (19); the number of the baffle plates (19) is 4-12, and the ratio of the cylinder diameter of the cylinder section (1) to the width of the baffle plates (19) is 1: (0.3-0.8).
9. The method of claim 1, wherein the diameter of the furnace tube (13) is 150-350 mm, the tube pitch of the furnace tube (13) is 1.5-3 times of the diameter of the furnace tube, and the material of the furnace tube (13) is selected from one or more of carbon steel, stainless steel and chrome molybdenum steel;
the aperture of the micropores on the furnace tube in the first feeding area is 500-5000 nm.
10. The method according to claim 1 or 9, wherein the indirect thermal desorption vertical furnace further comprises a material distribution device (22), the material distribution device comprises a power mechanism, a connecting rod and a material distribution rake, one end of the connecting rod is connected with the power mechanism, the other end of the connecting rod is connected with the material distribution rake, and the material distribution rake is arranged above the first tube plate (111) in the first feeding area;
the distribution harrow comprises a horizontal harrow bar and a plurality of harrow teeth (221) which are connected to the horizontal harrow bar (222) and arranged at intervals, the harrow teeth (221) vertically extend along the axial direction, one end of each harrow tooth is connected with the horizontal harrow bar (222), the other end of each harrow tooth is a free end, and one end of each connecting rod is connected with the horizontal harrow bar;
the method further comprises the following steps: and enabling the oil-containing solid slag to be treated to enter the indirect thermal desorption vertical furnace, wherein the oil-containing solid slag to be treated is uniformly distributed through the material distribution device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011522420.8A CN112664956A (en) | 2020-12-21 | 2020-12-21 | Method for treating oil-containing solid slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011522420.8A CN112664956A (en) | 2020-12-21 | 2020-12-21 | Method for treating oil-containing solid slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112664956A true CN112664956A (en) | 2021-04-16 |
Family
ID=75407158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011522420.8A Pending CN112664956A (en) | 2020-12-21 | 2020-12-21 | Method for treating oil-containing solid slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112664956A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113350958A (en) * | 2021-07-06 | 2021-09-07 | 杰瑞环保科技有限公司 | Purification method and purification device for high-temperature tailings |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115675A (en) * | 2009-12-30 | 2011-07-06 | 中国科学院过程工程研究所 | Heavy oil lightening method and device |
| EP2530134A1 (en) * | 2010-01-29 | 2012-12-05 | SPPT Pesquisas Tecnológicas LTDA | Vibratory heat exchanger unit for low temperature conversion for processing organic waste and process for processing organic waste using a vibratory heat exchanger unit for low temperature conversion |
| CN105363770A (en) * | 2015-12-17 | 2016-03-02 | 上海康恒环境股份有限公司 | Sectional type heating and modular thermal desorption equipment for restoring organic contaminated soil and method |
| CN106010613A (en) * | 2015-12-04 | 2016-10-12 | 陈虹均 | Method and equipment for direct acquisition of light oil by pyrolysis of small granular oil sand |
| CN108467742A (en) * | 2018-06-19 | 2018-08-31 | 大庆高新区百世环保科技开发有限公司 | A kind of sand desorption processing method and its device using flue gas indirectly heat |
| CN208378792U (en) * | 2018-04-02 | 2019-01-15 | 大庆高新区百世环保科技开发有限公司 | A kind of ultra-clean processing thermal desorption device of oily sludge object |
| CN208430097U (en) * | 2018-06-19 | 2019-01-25 | 大庆高新区百世环保科技开发有限公司 | A kind of oily sludge object processing unit using conduction oil indirect heating |
-
2020
- 2020-12-21 CN CN202011522420.8A patent/CN112664956A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115675A (en) * | 2009-12-30 | 2011-07-06 | 中国科学院过程工程研究所 | Heavy oil lightening method and device |
| EP2530134A1 (en) * | 2010-01-29 | 2012-12-05 | SPPT Pesquisas Tecnológicas LTDA | Vibratory heat exchanger unit for low temperature conversion for processing organic waste and process for processing organic waste using a vibratory heat exchanger unit for low temperature conversion |
| CN106010613A (en) * | 2015-12-04 | 2016-10-12 | 陈虹均 | Method and equipment for direct acquisition of light oil by pyrolysis of small granular oil sand |
| CN105363770A (en) * | 2015-12-17 | 2016-03-02 | 上海康恒环境股份有限公司 | Sectional type heating and modular thermal desorption equipment for restoring organic contaminated soil and method |
| CN208378792U (en) * | 2018-04-02 | 2019-01-15 | 大庆高新区百世环保科技开发有限公司 | A kind of ultra-clean processing thermal desorption device of oily sludge object |
| CN108467742A (en) * | 2018-06-19 | 2018-08-31 | 大庆高新区百世环保科技开发有限公司 | A kind of sand desorption processing method and its device using flue gas indirectly heat |
| CN208430097U (en) * | 2018-06-19 | 2019-01-25 | 大庆高新区百世环保科技开发有限公司 | A kind of oily sludge object processing unit using conduction oil indirect heating |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113350958A (en) * | 2021-07-06 | 2021-09-07 | 杰瑞环保科技有限公司 | Purification method and purification device for high-temperature tailings |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102410705A (en) | Multistage continuous overheated steam drying system and method of low-rank coal | |
| CN206109292U (en) | Circulation gas desulfurization's dry quenching device | |
| US4120644A (en) | Apparatus for regeneration of spent active carbon | |
| CN105834196A (en) | Device for continuously conducting oxygen-free carbonization on organic waste through superheated steam | |
| CN112664956A (en) | Method for treating oil-containing solid slag | |
| CN101358259B (en) | Device for waste heat recovery from smelting reduction ironmaking in heat pipe type rotary hearth furnace and steam production | |
| CN213930991U (en) | Boiler combustion device with cooling air treatment system | |
| CN208898720U (en) | Sludge carbonizing device for directly burning sludge pyrolysis gas | |
| CN109574455A (en) | A kind of heat accumulating type sludge drying carbonization system | |
| CN101526220B (en) | Double working substance bicirculating sludge incinerator | |
| CN205628892U (en) | Continuous anaerobic carbonization organic waste's of superheated steam device | |
| JP2009220048A (en) | Drying system and drying method for water-containing organic sludge | |
| CN205653405U (en) | Superheated steam carbide furnace | |
| CN112664955A (en) | System for be used for handling solid sediment of oiliness | |
| CN105565315B (en) | Interior radiation hot type activated carbon production apparatus | |
| CN101968303A (en) | Feed tubular coal drier | |
| CN105927989B (en) | A kind of pretreatment type Disposal System of Mud Burning | |
| US1964858A (en) | Method and apparatus for treatment of nongaseous materials | |
| CN105087854B (en) | Converter high-temperature flue gas dry method dust and process waste heat staged reclaimer and method | |
| CN209849537U (en) | Rotary indirect thermal desorption device and system | |
| CN109516462B (en) | Active carbon regeneration system | |
| CN110652784B (en) | Biochar preparation system | |
| CN204824950U (en) | Converter high temperature flue gas dry process is removed dust and cascaded recovery plant of process waste heat | |
| CN210261848U (en) | Converter gas aftertreatment and waste heat recovery device | |
| WO2021253865A1 (en) | Domestic waste percolate concentrated-solution pyrolysis treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210416 |