CN111234847A - Decoking spraying device for oil gas outlet of novel pyrolysis device and treatment method thereof - Google Patents
Decoking spraying device for oil gas outlet of novel pyrolysis device and treatment method thereof Download PDFInfo
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- CN111234847A CN111234847A CN202010151508.7A CN202010151508A CN111234847A CN 111234847 A CN111234847 A CN 111234847A CN 202010151508 A CN202010151508 A CN 202010151508A CN 111234847 A CN111234847 A CN 111234847A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B43/00—Preventing or removing incrustations
- C10B43/02—Removing incrustations
- C10B43/08—Removing incrustations with liquids
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
- C10B41/08—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke for the withdrawal of the distillation gases
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/04—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials
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Abstract
The invention provides a novel decoking spraying device of an oil gas outlet of a pyrolysis device and a treatment method thereof, belonging to the field of solid waste recovery treatment devices. The processing device includes: the device comprises a spiral decoking unit, an oil-gas cooling unit, an oil-gas spraying unit, an oil storage unit and the like, wherein the spiral decoking unit is communicated with an oil-gas outlet of the pyrolysis device and is used for treating coke residue substances in oil gas generated by the pyrolysis device; the oil gas spraying unit is used for spraying and cooling high-temperature oil gas; the spiral decoking unit is provided with a spiral shaft and a spiral blade and is used for conveying the coke residue substance to a carbon residue outlet of the pyrolysis device; one end of the spiral shaft penetrates through the oil gas spraying unit along the axis direction and is fixedly connected with the oil gas spraying unit. The decoking device has the advantages of simple structure, convenient installation, excellent performance, low manufacturing cost and the like, can fundamentally solve the problem that an oil gas outlet pipeline of the pyrolysis device is easy to coke, further improves the working efficiency of the pyrolysis device, and prolongs the service life of the pyrolysis device.
Description
Technical Field
The invention belongs to the field of solid waste recovery treatment devices, and particularly relates to a novel decoking spraying device for an oil gas outlet of a pyrolysis device and a treatment method thereof.
Background
Utilize traditional thermal cracking device to carry out the in-process of schizolysis to solid useless recovery raw materials such as waste plastics, rubber waste and domestic waste, can produce and smuggle the high temperature oil gas of a large amount of coke quality secretly, the coke quality condenses gradually along with the lapse of time and subsides, leads to the effective aperture of oil gas export and oil gas pipeline to diminish, and long-term the use can be with the pipeline jam, influences the equipment and uses, consequently in time, clears up effectively oil gas export and oil gas pipeline very necessary.
At present, a coke cleaning device is not arranged on the traditional thermal cracking equipment, only an oil gas outlet pipeline is arranged on an oil gas outlet, and high-temperature oil gas carrying a large amount of coke is gradually condensed and settled along with the lapse of time to cause the blockage of the oil gas outlet pipeline. The texture of burnt matter is comparatively thick, wastes time and energy when the clearance, can influence the normal of high temperature oil gas and pass through after oil gas outlet pipe blockage in addition, very easily causes the incident. Therefore, it is an important subject for those skilled in the art to develop a safe and efficient decoking device and treatment method for the oil gas outlet of a pyrolysis device.
Disclosure of Invention
Aiming at the problems of easy blockage of pyrolysis device pipelines, time and labor consumption for cleaning, low safety performance and the like in the prior art, the invention provides a novel decoking spraying device with a pyrolysis device oil gas outlet and a treatment method thereof, wherein the novel decoking spraying device has high safety, high decoking efficiency and high oil gas recovery rate.
In order to achieve the purpose, the invention adopts the technical scheme that:
novel decoking spray set of pyrolysis device oil gas export, including setting gradually:
the spiral decoking unit is communicated with the oil gas outlet of the pyrolysis device and is used for treating coke residue substances in oil gas generated by the pyrolysis device;
the oil gas spraying unit is used for spraying and cooling the oil gas;
the spiral decoking unit is provided with a spiral shaft and spiral blades and is used for conveying the coke residue substances to a carbon residue outlet of the pyrolysis device; one end of the spiral shaft penetrates through the oil gas spraying unit along the axis direction and is fixedly connected with the oil gas spraying unit;
the spiral decoking unit is transversely arranged, and the oil gas spraying unit is longitudinally arranged.
Preferably, the spiral decoking unit further comprises a spiral decoking machine transmission and a spiral decoking machine cylinder fixedly connected with the spiral decoking machine transmission, which are sequentially arranged from left to right;
the spiral shaft and the spiral blades are arranged inside the barrel body of the spiral decoking machine, and the spiral blades are arranged on the spiral shaft.
Preferably, the spiral decoking unit further comprises a sensor arranged above the cylinder of the spiral decoking machine and an oil gas observation hole arranged in the middle of the cylinder of the spiral decoking machine;
the sensor comprises a pressure remote sensor and a temperature remote sensor.
Preferably, the oil gas spraying unit comprises a spraying tower cylinder, a spraying tower oil gas outlet arranged at the top of the spraying tower cylinder, a spraying tower condensate outlet arranged at the bottom of the spraying tower cylinder and an observation sight glass arranged outside the spraying tower cylinder.
Preferably, an oil gas spraying device and a tower plate positioned below the oil gas spraying device are arranged at one end, close to the top, inside the spraying tower cylinder;
the oil gas spraying device comprises an upper layer spray head and a lower layer spray head, and the tower plate comprises an upper tower plate and a lower tower plate;
control valves are arranged on the spray tower oil gas outlet and the spray tower condensate outlet;
the observation sight glass comprises an upper observation sight glass, a middle observation sight glass and a lower observation sight glass.
Preferably, the decoking spray device further comprises an oil-gas cooling unit for cooling oil gas into condensate and an oil storage unit for storing and providing condensate for the oil-gas spray unit.
Preferably, the oil-gas cooling unit is a condenser, and the oil storage unit comprises a circulating oil tank and an oil storage tank, wherein the circulating oil tank is arranged on a condensate outlet of the spray tower;
still be equipped with circulating oil pump and oil spilling mouth on the circulating oil tank, circulating oil pump and oil gas spray set communicate with defeated oil pipe, the oil storage tank communicates with defeated oil pipe and circulating oil tank's oil spilling mouth, the condenser is located between circulating oil pump and the oil gas spray set.
The novel oil gas outlet decoking treatment method of the continuous pyrolysis device comprises the following steps:
oil gas generated in the pyrolysis device enters a spiral decoking unit through an oil gas outlet of the pyrolysis device, and then spiral decoking treatment is carried out to remove coke residue substances in the oil gas;
and (4) after the oil gas is subjected to the spiral decoking treatment step enters an oil gas spraying unit, and then the condensate is used for spraying and cooling treatment.
Preferably, the spiral decoking treatment step specifically comprises: the spiral coke cleaning machine conveys coke residue substances in the oil gas to a carbon residue outlet which is vertical to the oil gas outlet of the pyrolysis device;
the method also comprises an oil gas condensation step between the spiral decoking treatment step and the spraying cooling treatment step, and specifically comprises the following steps: and cooling the spraying oil used for spraying by using an oil-gas cooling unit to obtain condensate.
The application of the decoking spraying device or the processing method of the novel pyrolysis device oil gas outlet in the field of solid waste recovery.
Compared with the prior art, the invention has the advantages and positive effects that:
1. the invention provides a novel decoking spraying device of an oil gas outlet of a pyrolysis device and a treatment method thereof. Wherein the high efficiency of the device is realized by arranging a spiral decoking unit and an oil gas spraying unit. On one hand, the coke residue in the oil gas is returned to the oil gas outlet of the thermal cracking device again by the spiral decoking unit through reverse spiral action, and then is discharged out of the thermal cracking device through the carbon residue outlet; on the other hand, the oil gas spraying device is also used for cleaning a spraying tower, part of oil gas is cooled down, part of condensed oil is continuously recycled, and an overflow part is recovered;
2. the invention provides a novel decoking spraying device of an oil gas outlet of a pyrolysis device and a treatment method thereof. Wherein the safety of the device is realized in that: the device ensures the smoothness of the oil-gas pipeline after spraying and decoking, reduces the occurrence of safety accidents, overcomes the problems of coking of an oil-gas outlet and easy blockage of the oil-gas pipeline, does not influence the passing capacity of subsequent oil gas, and provides a safe and stable operating environment for pyrolysis equipment;
3. the decoking spray device of the novel oil gas outlet of the pyrolysis device has the advantages of simple structure, convenience in installation, excellent performance, low manufacturing cost and the like, decoking efficiency reaches 100%, high-temperature oil gas can be prevented from being retained in the pyrolysis device, the oil gas recovery rate is improved by about 10%, production efficiency is improved, and the service life of the device is prolonged.
Drawings
Fig. 1 is a diagram of a decoking spray device at an oil-gas outlet of a novel pyrolysis device, wherein a spiral decoking unit comprises: the device comprises a spiral decoking machine transmission 1, a spiral decoking machine barrel 2, a pressure remote sensor 3, an oil gas observation hole 4, a spiral blade 5, a temperature remote sensor 6 and a spiral shaft 7; the oil gas sprays the unit and includes: a spray tower oil gas outlet knife gate valve 8, a spray tower oil gas outlet ball valve 9, a spray tower oil gas outlet 10, an observation sight glass 11, an oil gas spray device 12, a spray tower cylinder 13, a spray tower condensate outlet 14, a spray tower condensate outlet knife gate valve 15 and a spray tower condensate outlet ball valve 16; the cooling unit includes: a condenser 17; the oil storage unit includes: a circulating oil tank 18, an oil overflow port 19, a circulating oil pump 20, an oil delivery pipe 21 and an oil storage tank 22; a pyrolysis device: the device comprises a pyrolysis device transmission system 23, a pyrolysis device feeding valve 24, a pyrolysis device reaction cylinder 25, a pyrolysis device helical blade 26, a pyrolysis device pressure remote sensor 27, a pyrolysis device temperature remote sensor 28, a pyrolysis device helical shaft 29, a pyrolysis device oil gas outlet 30, a pyrolysis device oil gas outlet knife gate valve 31, a pyrolysis device oil gas outlet ball valve 32 and a carbon residue outlet 33;
fig. 2 is a partial enlarged view of the oil-gas spray unit device provided in the embodiment of the present invention, wherein the upper tray 34 of the oil-gas spray tower, the lower tray 35 of the oil-gas spray tower, the upper seal 36 of the oil-gas spray tower, the upper spray head 37 of the oil-gas spray tower, the lower spray head 38 of the oil-gas spray tower, the upper cylinder 39 of the oil-gas spray tower, the lower cylinder 40 of the oil-gas spray tower, and the lower seal 41 of the oil-gas spray tower;
fig. 3 is a diagram of a tray device inside a spray tower cylinder provided by an embodiment of the invention, wherein the tray valve plate 42 and the tray assembly 43 are arranged.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a novel decoking spraying device for an oil gas outlet of a pyrolysis device, which comprises the following components in sequence:
the spiral decoking unit is communicated with the oil gas outlet of the pyrolysis device and is used for treating coke residue substances in oil gas generated by the pyrolysis device;
the oil gas spraying unit is used for spraying and cooling the oil gas;
the spiral decoking unit is provided with a spiral shaft and spiral blades and is used for conveying the coke residue substances to a carbon residue outlet of the pyrolysis device; one end of the spiral shaft penetrates through the oil gas spraying unit along the axis direction and is fixedly connected with the oil gas spraying unit;
the spiral decoking unit is transversely arranged, and the oil gas spraying unit is longitudinally arranged.
The decoking spray device is suitable for various pyrolysis devices, such as an internal rotation type pyrolysis reaction kettle device, an external rotation type pyrolysis reaction kettle device or a fixed distillation kettle and the like. What need supplement here is, install the pressure remote sensor, the temperature remote sensor of real-time supervision pressure and temperature on the pyrolysis device, pressure and temperature sensor all possess PLC signal teletransmission function, can be with pressure and temperature teletransmission to the control room in the pyrolysis device, are convenient for in time look over and regulate and control the pyrolysis device to guarantee the safe normal operating of pyrolysis device.
In addition, a spiral shaft is also arranged in the pyrolysis device cylinder, and a spiral blade for pushing the waste materials to move towards one side of the oil gas outlet is arranged on the spiral shaft; here, the waste materials include solid waste materials including waste rubber, waste plastics, household garbage, oil sand, and the like. An oil-gas outlet sealing ball valve and an oil-gas outlet sealing knife gate valve are also arranged at the upper part of the oil-gas outlet of the pyrolysis device; a carbon residue outlet is vertically arranged at the lower part corresponding to the oil gas outlet of the pyrolysis device. In order to prevent external air from entering the pyrolysis device to cause safety accidents, a sealing knife gate valve and a sealing ball valve are also arranged at the carbon residue outlet. The oil gas spraying unit is used for spraying and cooling high-temperature oil gas in the spray tower and also plays roles in removing dust and coke.
In a preferred embodiment, the spiral decoking unit further comprises a spiral decoking machine transmission and a spiral decoking machine cylinder fixedly connected with the spiral decoking machine transmission, which are sequentially arranged from left to right;
the spiral shaft and the spiral blades are arranged inside the barrel body of the spiral decoking machine, and the spiral blades are arranged on the spiral shaft.
In the above preferred embodiment, the spiral decoking unit further comprises a spiral decoking machine transmission, a bearing support of the spiral decoking machine is mounted on a left end cover of the spiral decoking machine, a left bearing box is mounted on the bearing support, a sealing sleeve is arranged on the left bearing box, a sealing material is filled between the sealing sleeve and the spiral shaft, and the outside of the sealing sleeve is compressed by a pressing cover, so as to prevent oil gas from escaping and leaking.
A screw shaft is arranged in the barrel of the screw decoking machine, one end of the screw shaft penetrates through the oil gas spraying unit along the direction of the screw shaft, namely penetrates through the barrel of the oil gas spraying tower and is matched with the bearing support and the bearing box at the right end; the lower part of the oil gas spraying tower cylinder body is provided with flanges which are bilaterally symmetrical, the flange on the right side of the spiral decoking cylinder body is connected with the flange on the left side of the lower part of the spraying tower cylinder body, the flange on the right side of the lower part of the spraying tower cylinder body is connected with the right bearing support of the spiral decoking cylinder body, the left side of the bearing support is provided with a right sealing sleeve of the spiral decoking machine, and the right side of the support is provided with a right bearing box.
The spiral shaft is provided with spiral blades, the spiral blades are used for pushing the coke slag to be conveyed towards the direction close to the transmission side of the spiral decoking machine, the coke slag substances generated in the oil gas are conveyed to the carbon slag outlet of the pyrolysis device, and the smoothness of an oil gas channel is kept.
In a preferred embodiment, the spiral decoking unit further comprises a sensor arranged above the cylinder of the spiral decoking machine, and an oil gas observation hole arranged in the middle of the cylinder of the spiral decoking machine;
the sensor comprises a pressure remote sensor and a temperature remote sensor.
In the preferred embodiment, the sensor is arranged above the barrel of the spiral decoking machine, and the pressure and temperature remote sensor for detecting oil gas in the barrel of the spiral decoking machine is also vertically arranged, and both the sensor and the sensor have a PLC signal remote transmission function and can remotely transmit the pressure and temperature values in the barrel of the spiral decoking machine to the control room in real time; in addition, an oil gas observation hole is also arranged, and the purpose is to facilitate maintenance and observation of the working and running conditions inside the barrel body of the spiral decoking machine.
In a preferred embodiment, the oil gas spraying unit comprises a spraying tower cylinder, a spraying tower oil gas outlet arranged at the top of the spraying tower cylinder, a spraying tower condensate outlet arranged at the bottom of the spraying tower cylinder and an observation sight glass arranged outside the spraying tower cylinder.
In the preferred embodiment, in order to prevent external air from entering the spray tower, a knife gate valve and a ball valve are arranged at an oil gas outlet of the spray tower so as to ensure absolute safety of production; the lower part of the spraying tower cylinder body is provided with a flange which is connected with the flange on the lower seal head of the spraying tower, and a knife gate valve and a ball valve are also arranged on a condensate outlet of the spraying tower to prevent outside air from entering.
In a preferred embodiment, an oil gas spraying device and a tower plate positioned below the oil gas spraying device are arranged at one end, close to the top, inside the spraying tower cylinder;
the oil gas spraying device comprises an upper layer spray head and a lower layer spray head, and the tower plate comprises an upper tower plate and a lower tower plate;
control valves are arranged on the spray tower oil gas outlet and the spray tower condensate outlet;
the observation sight glass comprises an upper observation sight glass, a middle observation sight glass and a lower observation sight glass.
In the preferred embodiment, two groups of oil gas spraying devices are designed in the spraying tower cylinder body, wherein the oil gas spraying devices are respectively an upper layer spray head, a lower layer spray head and an inlet which are respectively arranged on the side surface of the upper spraying tower;
in order to facilitate observation of the working condition inside the spray tower cylinder, three observation sight glasses are arranged at the upper part outside the spray tower cylinder, namely an upper observation sight glass, a middle observation sight glass and a lower observation sight glass, wherein the observation sight glasses are symmetrically arranged left and right and are made of high-temperature-resistant quartz glass;
the upper part in the spraying tower cylinder body is also provided with an upper layer tower plate and a lower layer tower plate. A plurality of annular circular holes are formed above the tower plate and used as oil and gas passages, a fixed tower plate valve plate is arranged above the holes, and the tower plate and the valve plate on the tower plate form an oil and gas spray tower plate assembly; the ascending oil gas flow contacts with the spray condensed oil through the valve plate, and the gas phase and the liquid phase carry out heat transfer and mass transfer processes.
In a preferred embodiment, the decoking spray device further comprises an oil-gas cooling unit for cooling oil gas into condensate and an oil storage unit for storing and providing condensate for the oil-gas spray unit.
In a preferred embodiment, the oil-gas cooling unit is a condenser, and the oil storage unit comprises a circulating oil tank arranged on the condensate outlet of the spray tower and an oil storage tank for storing condensate;
still be equipped with circulating oil pump and oil spilling mouth on the circulating oil tank, circulating oil pump and oil gas spray set communicate with defeated oil pipe, the oil storage tank communicates with defeated oil pipe and circulating oil tank's oil spilling mouth, the condenser is located between circulating oil pump and the oil gas spray set.
In the preferred embodiment, a condenser is additionally arranged on the oil delivery pipe connected between the oil gas spraying device and the circulating oil pump, and the condenser can be a horizontal condenser or other condensers capable of realizing the condensation function. Firstly, the working principle of the condenser is as follows: the condensed water and the condensed oil pass through the shell and the tube respectively. The shell side is walked to the comdenstion water purpose is the condensation effect that increases the oil, and oil vapor walks the condenser pipe in order to make the oil gas pass through more unobstructed. Secondly, the main functions of the condenser include: 1) spraying and cooling the high-temperature oil gas in the spraying tower cylinder; 2) the device is used for washing coke on the inner wall of the spray tower and the tower plate, and achieves the purpose of cleaning the spray tower and preventing coking.
In addition, a circulating oil tank is installed at a condensate outlet of the spray tower, an oil overflow port is formed in the position, close to the side face of the circulating oil tank, when the condensate oil sprayed for decoking exceeds the oil overflow port, the redundant condensate oil overflows into the oil storage tank from the oil overflow port, and the condensate oil in the circulating oil tank is kept balanced all the time.
The invention also provides a novel oil gas outlet decoking treatment method of the continuous pyrolysis device, which comprises the following steps:
oil gas generated in the pyrolysis device enters a spiral decoking unit through an oil gas outlet of the pyrolysis device, and then spiral decoking treatment is carried out to remove coke residue substances in the oil gas;
and (4) after the oil gas is subjected to the spiral decoking treatment step enters an oil gas spraying unit, and then the condensate is used for spraying and cooling treatment.
In a preferred embodiment, the spiral decoking treatment step is specifically as follows: the spiral coke cleaning machine conveys coke residue substances in the oil gas to a carbon residue outlet which is vertical to the oil gas outlet of the pyrolysis device;
the method also comprises an oil gas condensation step between the spiral decoking treatment step and the spraying cooling treatment step, and specifically comprises the following steps: and cooling the spraying oil used for spraying by using an oil-gas cooling unit to obtain condensate.
The invention also provides an application of the decoking spraying device or the processing method of the novel pyrolysis device oil gas outlet in the field of solid waste recovery.
The decoking spray set and the treatment method thereof provided by the invention overcome the problems that the oil gas outlet of the existing pyrolysis device is easy to coke and the pipeline is easy to block. The device has the biggest characteristics of simple structure, convenient installation, excellent performance and low manufacturing cost, has a clean oil gas outlet pipeline, prevents an oil gas outlet from coking, has decoking efficiency of up to 100 percent, provides a safe and stable operation environment for pyrolysis equipment, and prolongs the service life of the pyrolysis equipment while improving the working efficiency of the equipment.
In order to more clearly and specifically describe the decoking spraying device of the oil gas outlet of the novel pyrolysis device and the processing method thereof, the following description is given with reference to specific embodiments.
Example 1 novel continuous pyrolysis device oil gas outlet decoking treatment method
(1) A reaction device: the pyrolysis device selects an internal rotation type pyrolysis reaction kettle;
(2) the coke cleaning treatment method comprises the following specific steps:
s1, spiral decoking treatment:
solid wastes such as waste rubber, waste plastics, household garbage and the like are sent into a pyrolysis device through a pyrolysis device feeding valve 24, thermal cracking reaction is carried out in an internal rotation type pyrolysis reaction kettle, a large amount of high-temperature oil gas carrying coke residue substances is generated in the reaction process, the high-temperature oil gas enters a spiral decoking unit through a pyrolysis device oil gas outlet 30, a spiral decoking machine is driven by a spiral decoking machine 1 to run, a spiral shaft 7 installed in a spiral decoking machine barrel 2 and a spiral blade 5 installed on the spiral shaft 7 continuously rotate to push the coke residue substances to pass through a pyrolysis device oil gas outlet 30 and then enter a carbon residue outlet 33 vertically arranged with the pyrolysis device oil gas outlet 30 so as to keep an oil gas channel smooth;
in the operation process of the spiral decoking unit, the pressure remote sensor 3 and the temperature remote sensor 6 which are arranged above the spiral decoking machine cylinder 2 can detect the oil gas pressure and the oil gas temperature in the spiral decoking machine cylinder 2 in real time and remotely transmit the monitoring data to the control room; the working condition inside the spiral decoking machine barrel 2 can be observed through the oil gas observation hole 4 arranged in the middle of the spiral decoking machine barrel 2, so that safe and smooth operation of decoking work is ensured;
s2, oil gas condensation processing:
the high-temperature oil gas after the spiral decoking treatment step enters an oil gas spraying unit, and before the oil gas spraying device 12 is used for spraying and cooling, the oil gas is cooled by a condenser 17 connected between a circulating oil pump 20 and the oil gas spraying device 12, so that condensate is further obtained;
s3, oil gas spraying treatment:
the condensate formed after cooling treatment is circularly conveyed to the oil gas spraying device 12 through the oil conveying pipe 21 by using the circulating oil pump 20, and oil gas spraying treatment is carried out by an upper layer spray head 37 of the oil gas spraying device and a lower layer spray head 38 of the oil gas spraying device which are arranged on the oil gas spraying device 12;
the spraying treatment here has two main functions: on one hand, the high-temperature oil gas in the spray tower cylinder 13 is sprayed for cooling, and on the other hand, the high-temperature oil gas is used for washing coke residue substances on the inner wall of the spray tower cylinder 13 and tower plates, so that the purposes of cleaning the inside of the spray tower and preventing coking are achieved.
An oil gas spray tower upper tower plate 34 and an oil gas spray tower lower tower plate 35 are also arranged in the spray tower cylinder body 13, a plurality of annular circular holes are formed in the tower plates and can be used as oil gas channels, a fixed tower plate valve plate 42 is also arranged above the holes, the oil gas which continuously rises contacts sprayed condensed oil through flowing through the valve plate, and the gas phase and the liquid phase carry out heat transfer and mass transfer processes;
and a part of the oil gas is cooled down after being sprayed, the rest part of the oil gas continuously moves upwards along the direction of the oil gas outlet 10 of the spray tower, and in order to prevent external air from entering and oil gas from escaping, a knife gate valve 8 of the oil gas outlet of the spray tower and a ball valve 9 of the oil gas outlet of the spray tower are also arranged on the oil gas outlet 10 of the spray tower, so that the rest oil gas is continuously subjected to subsequent spraying cooling treatment.
Comparative example 1 decoking treatment method of conventional pyrolysis apparatus
Connect about DN200 oil gas pipeline in pyrolysis device's oil gas exit position, constantly produce the high temperature oil gas of clamp band cinder material at pyrolysis device's pyrolysis in-process, high temperature oil gas gets into the oil gas pipeline through the oil gas export, along with the lapse of time, the cinder material condenses gradually on oil gas pipeline and oil gas export, and then blocks up oil gas pipeline and oil gas export, then handle pyrolysis device's oil gas pipeline and oil gas export through manual handling's mode, because the cinder material texture is comparatively sticky, waste time and energy when handling relatively.
Through comparison and analysis of the embodiment 1 and the comparative example 1, the traditional decoking treatment method mentioned in the comparative example 1 only installs a simple oil gas pipeline, so that the problem that the oil gas pipeline and the oil gas outlet of the pyrolysis device are easy to coke and block is not fundamentally solved, and the coking substances on the oil gas pipeline and the oil gas outlet of the pyrolysis device need to be cleaned regularly, so that time and labor are wasted, the working efficiency of the pyrolysis device is seriously influenced, and the service life of the device is also reduced; the decoking spray device provided by the embodiment of the invention is a novel and continuous decoking treatment device, oil gas generated in the reaction process of the pyrolysis device can be efficiently treated by arranging the spiral decoking unit and the decoking spray unit, the coking problem of the pyrolysis device is thoroughly solved, the decoking efficiency reaches 100%, the crude oil recovery rate is improved by about 10%, the working efficiency of the pyrolysis device is improved, the service life of the device is prolonged, and safety guarantee can be provided for the whole decoking treatment process by arranging the control valves at the outlets of the devices. Therefore, the novel continuous decoking spraying device provided by the invention has a very wide application prospect and a very wide practical application value.
Claims (10)
1. Novel decoking spray set of pyrolysis device oil gas export, its characterized in that, including setting gradually:
the spiral decoking unit is communicated with the oil gas outlet of the pyrolysis device and is used for treating coke residue substances in oil gas generated by the pyrolysis device;
the oil gas spraying unit is used for spraying and cooling the oil gas;
the spiral decoking unit is provided with a spiral shaft and spiral blades and is used for conveying the coke residue substances to a carbon residue outlet of the pyrolysis device; one end of the spiral shaft penetrates through the oil gas spraying unit along the axis direction and is fixedly connected with the oil gas spraying unit;
the spiral decoking unit is transversely arranged, and the oil gas spraying unit is longitudinally arranged.
2. The device of claim 1, wherein the spiral decoking unit further comprises a spiral decoking machine transmission and a spiral decoking machine cylinder fixedly connected with the spiral decoking machine transmission, which are arranged from left to right in sequence;
the spiral shaft and the spiral blades are arranged inside the barrel body of the spiral decoking machine, and the spiral blades are arranged on the spiral shaft.
3. The apparatus of claim 2, wherein the spiral decoking unit further comprises a sensor disposed above the spiral decoking machine barrel, an oil and gas observation hole disposed in the middle of the spiral decoking machine barrel;
the sensor comprises a pressure remote sensor and a temperature remote sensor.
4. The apparatus of claim 1, wherein the oil and gas spray unit comprises a spray tower cylinder, a spray tower oil and gas outlet opening at the top of the spray tower cylinder, a spray tower condensate outlet opening at the bottom of the spray tower cylinder, and a sight glass outside the spray tower cylinder.
5. The device as claimed in claim 4, wherein an oil gas spray device and a tower plate positioned below the oil gas spray device are arranged inside the spray tower cylinder body and at one end close to the top of the spray tower cylinder body;
the oil gas spraying device comprises an upper layer spray head and a lower layer spray head, and the tower plate comprises an upper tower plate and a lower tower plate;
control valves are arranged on the spray tower oil gas outlet and the spray tower condensate outlet;
the observation sight glass comprises an upper observation sight glass, a middle observation sight glass and a lower observation sight glass.
6. The apparatus of claim 5, wherein the decoking spray apparatus further comprises an oil and gas cooling unit for cooling oil and gas into condensate and an oil storage unit for storing and providing condensate to the oil and gas spray unit.
7. The apparatus of claim 6, wherein the oil and gas cooling unit is a condenser, and the oil storage unit comprises a circulation oil tank mounted on the spray tower condensate outlet, an oil storage tank for storing condensate;
still be equipped with circulating oil pump and oil spilling mouth on the circulating oil tank, circulating oil pump and oil gas spray set communicate with defeated oil pipe, the oil storage tank communicates with defeated oil pipe and circulating oil tank's oil spilling mouth, the condenser is located between circulating oil pump and the oil gas spray set.
8. The novel oil gas outlet decoking treatment method of the continuous pyrolysis device is characterized by comprising the following steps of:
oil gas generated in the pyrolysis device enters a spiral decoking unit through an oil gas outlet of the pyrolysis device, and then spiral decoking treatment is carried out to remove coke residue substances in the oil gas;
and (4) after the oil gas is subjected to the spiral decoking treatment step enters an oil gas spraying unit, and then the condensate is used for spraying and cooling treatment.
9. The process according to claim 8, characterized in that the spiral decoking treatment step is in particular: the spiral coke cleaning machine conveys coke residue substances in the oil gas to a carbon residue outlet which is vertical to the oil gas outlet of the pyrolysis device;
the method also comprises an oil gas condensation step between the spiral decoking treatment step and the spraying cooling treatment step, and specifically comprises the following steps: and cooling the spraying oil used for spraying by using an oil-gas cooling unit to obtain condensate.
10. Use of the apparatus or process of any one of claims 1 to 9 in the field of solid waste recovery.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114395426A (en) * | 2022-01-10 | 2022-04-26 | 东华工程科技股份有限公司 | Improved coal gasification raw gas washing and separating system |
| CN114774160A (en) * | 2022-05-30 | 2022-07-22 | 青岛伊克斯达智能装备有限公司 | Cracked heavy oil storage and conveying equipment and method for storing and conveying cracked heavy oil |
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2020
- 2020-03-06 CN CN202010151508.7A patent/CN111234847A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114395426A (en) * | 2022-01-10 | 2022-04-26 | 东华工程科技股份有限公司 | Improved coal gasification raw gas washing and separating system |
| CN114774160A (en) * | 2022-05-30 | 2022-07-22 | 青岛伊克斯达智能装备有限公司 | Cracked heavy oil storage and conveying equipment and method for storing and conveying cracked heavy oil |
| CN114774160B (en) * | 2022-05-30 | 2023-09-01 | 青岛伊克斯达智能装备有限公司 | Storage and conveying equipment for cracked heavy oil and method for storing and conveying cracked heavy oil |
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