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Process method for collecting dust and recycling oil from pyrolyzed high-temperature oil gas

A process method and oil recovery technology, applied in gas dust removal, petroleum industry, separation methods, etc., can solve problems such as complex process, single dust removal method, and difficulty in industrialization and application

Inactive Publication Date: 2015-07-01
SHAANXI MEISILIN ENERGY SCI & TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shortcomings of the above methods are: the dust removal method is single, difficult to operate, difficult to control, the process is more complicated, and it is difficult to promote and apply large-scale industrialization

Method used

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  • Process method for collecting dust and recycling oil from pyrolyzed high-temperature oil gas
  • Process method for collecting dust and recycling oil from pyrolyzed high-temperature oil gas
  • Process method for collecting dust and recycling oil from pyrolyzed high-temperature oil gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A process for pyrolyzing high-temperature oil and gas to remove dust and recover oil, comprising the following steps: 1) 750°C high-temperature pyrolysis gas 1 from a dual-fluidized bed pyrolysis device, and gas from the parent cyclone cylinder 2 of the parent-child cyclone dust removal device The inlet enters tangentially, and after capturing dust particles above 15 microns, the purified gas 3 of the parent cyclone whose temperature drops to 720°C is obtained; the collected dust falls to the cone extension section of the parent cyclone cylinder 2 and is stored The particles 6 are discharged through the pipe.

[0030] 2) The purified gas 3 of the parent cyclone with a temperature of 720°C directly enters the multi-pipe cyclone separator 4 inside the mother cyclone cylinder 2, and after trapping particles between 5-15 microns, the temperature drops to 710°C. The multi-pipe cyclone purified gas 8, the multi-pipe cyclone purified gas 8 is sent out after being merged in the...

Embodiment 2

[0034] A process for recovering oil by pyrolysis of high-temperature oil gas dedusting, comprising the following steps:

[0035] 1. The 680°C high-temperature pyrolysis gas 1 from the dual-fluidized bed pyrolysis device enters tangentially from the gas inlet of the parent cyclone cylinder 2 of the parent-child cyclone dedusting device, and is purified after collecting dust particles above 15 microns The final parent cyclone purifies the gas 3. Due to the heat dissipation effect of the parent cyclone cylinder body 2, the temperature of the parent cyclone purified gas 3 drops to 610°C. The dust particles 6 collected and dropped to the conical extension section of the parent cyclone cylinder body 2 are discharged through the pipeline.

[0036] 2. The purified gas 3 of the parent cyclone at a temperature of 610°C directly enters the multi-tube cyclone separator 4 inside the parent cyclone cylinder 2, and after capturing particles between 5 and 15 microns, it is purified by a multi-...

Embodiment 3

[0040] The 650°C high-temperature pyrolysis gas 1 from the dual fluidized bed pyrolysis device enters tangentially from the gas inlet of the parent cyclone cylinder 2 of the parent-child cyclone dedusting device, and after collecting dust particles above 15 microns, the purified gas is obtained Parent cyclone purifying gas 3. Due to the heat dissipation effect of the parent cyclone cylinder body 2, the temperature of the parent cyclone purified gas 3 drops to 618°C. The collected dust particles 6 fall to the conical extension section of the parent cyclone cylinder 2 for storage and then are discharged through the pipeline. The purified gas 3 of the parent cyclone with a temperature of 618°C directly enters the multi-tube cyclone separator 4 inside the parent cyclone cylinder 2, and after trapping the particles between 5-15 microns, the purified gas 8 of the multi-tube cyclone with a temperature of 603°C It is sent out after being merged in the collecting pipe box 7. The coll...

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Abstract

The invention discloses a process method for collecting dust and recycling oil from a pyrolyzed high-temperature oil gas. The process method comprises the following steps: feeding high-temperature pyrolyzed gas with temperature of 550-750 DEG C into a main cyclone cylinder of a sub-main cyclone dust collection device from a tangential direction, thereby obtaining a main cyclone purified gas of which the temperature is 500-720 DEG C after being purified; directly feeding the main cyclone purified gas into a multi-tube sub-cyclone separator inside the main cyclone cylinder, thereby obtaining a multi-tube sub-cyclone purified gas of which the temperature is reduced to 490-710 DEG C; feeding the multi-tube sub-cyclone purified gas in the tangential direction of the cylinder body of a spiral electric dust collector, thereby obtaining an electric dust collected purified gas of which the temperature is reduced to be 440-690 DEG C; feeding the electric dust collected purified gas from a gas phase hole of a Venturi dust collector, pressurizing the washed oil by using a circulation oil pump, subsequently feeding into a liquid phase inlet of the Venturi dust collector, discharging a gas-liquid mixture into an oil-gas separator from the bottom of the Venturi dust collector, performing oil-gas inert separation in the oil-gas separator so as to obtain a purified pyrolyzed gas of which the temperature is reduced to 380-580 DEG C, and discharging the purified pyrolyzed gas out from the top of the oil-gas separator. The dust collection rate of the pyrolyzed oil gasis as high as 99.98%, and the solid content of recycled coal tar is less than 0.4%.

Description

technical field [0001] The invention belongs to the fields of coal chemical industry, oil shale and biomass pyrolysis, and specifically relates to a process method for pyrolyzing high-temperature oil and gas to remove dust and recover oil. Background technique [0002] my country is rich in coal and less in oil, and coal resources are relatively abundant, but at present most of the coal resources are directly used as fuel for power generation; on the other hand, with the rapid growth of my country's economy, the demand for fuel oil continues to increase, so many domestic research institutes and enterprises have developed Pulverized coal (or oil shale) pyrolysis upgrading process, and some process devices have been industrialized. Producing coal tar with high value-added hydrogen-rich components before coal combustion or gasification is beneficial to comprehensive utilization of coal resources, reduction of nitrogen oxides and sulfide emissions in waste gas, improvement of coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/02C10K1/00C10K1/04B01D50/00
CPCB01D50/00C10K1/02C10K1/026C10K1/028C10K1/16
Inventor 佘焱董芳儒
Owner SHAANXI MEISILIN ENERGY SCI & TECH RES INST
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