A rotary bed and an adsorption method of hydrocarbon-containing exhaust gas

A technology of rotating bed and exhaust gas, applied in separation methods, chemical instruments and methods, chemical/physical/physicochemical fixed reactors, etc., can solve problems such as high operating costs, undisclosed prior art, and economic impact. achieve smooth operation

Active Publication Date: 2014-05-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The combination of condensation and catalytic oxidation can recover most of the volatile hydrocarbons, and can also achieve up-to-standard discharge of tail gas, but its disadvantages are that the process is long, the operation cost is high, and the economy is affected
[0008] The rotating bed is a kind of equipment used for gas-liquid contact. The rotating bed in the prior art is used for the contact reaction or mass transfer process between the gas phase and the liquid phase. It mainly includes a bed body, a shell, an air inlet, and an air outlet. , liquid inlet, liquid discharge port and other components and structures, the application in other fields has not disclosed the relevant prior art

Method used

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  • A rotary bed and an adsorption method of hydrocarbon-containing exhaust gas
  • A rotary bed and an adsorption method of hydrocarbon-containing exhaust gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A certain gasoline oxidative sweetening tail gas and liquid hydrocarbon oxidative sweetening tail gas, the temperature is about 40°C, and the total hydrocarbon concentration is 30×10 4 ~80×10 4 mg / m 3 . The absorbent is crude kerosene from the fractionation tower of the refinery at a temperature of 60°C.

[0032] Gas oil enters as figure 1 For the rotary bed shown in the structure, the bed rotation speed is 600 rpm. The liquid phase discharged from the rotating bed is cooled to 20°C and enters the bubbling bed with waste gas for hydrocarbon absorption. The gas space velocity in the bubbling bed is 60h -1 , the volume ratio of the absorbent at the inlet of the bubbling bed to the exhaust gas is 0.1, and the rich absorbent discharged from the bubbling bed and the gas phase discharged from the rotating bed are reabsorbed and mixed by an ejector, and then used as feed to the kerosene hydrotreating unit, and the tail gas is discharged The hydrogen sulfide content in th...

Embodiment 2

[0038] Exhaust gas is discharged from an oil storage tank area, the temperature is about 40°C, and the total hydrocarbon concentration is 10×10 4 ~50×10 4 mg / m 3 . The absorbent is the gas oil from the fractionation tower of the catalytic cracking unit of the refinery, and the temperature is 60°C.

[0039] Gas oil enters as figure 1 For the rotary bed shown in the structure, the bed rotation speed is 1000 rpm. The liquid phase discharged from the rotating bed is cooled to 25°C and enters the bubbling bed with waste gas for hydrocarbon absorption. The gas space velocity in the bubbling bed is 150h -1 , the volume ratio of the absorbent at the inlet of the bubbling bed to the waste gas is 0.2, and the rich absorbent discharged from the bubbling bed and the gas phase discharged from the rotating bed are reabsorbed and mixed by an injector, and then used as feedstock for a diesel hydrotreating unit, and the tail gas is discharged The hydrogen sulfide content in the medium is...

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Abstract

The invention discloses a rotary bed. The rotary bed comprises a cylinder, a bed layer assembly, an upper head and a lower head. A gas-phase outlet is disposed in the lower part of the cylinder and a liquid phase outlet is disposed in the lower head. A spiral plate is fixed to the inner wall of the cylinder. The spiral plate and a bed layer are in a clearance fit. The bed layer assembly is an integrated structure formed by an upper cover plate, the bed layer and a lower cover plate. The upper end of the bed layer assembly is fixed in a rotatable manner to the upper part in the cylinder through a support. The bed layer is sandwiched between the upper cover plate and the lower cover plate. The middle part of the bed layer is a cylindrical cavity. A liquid distributing tube stretches from the upside into the cylindrical cavity in the middle part of the bed layer. The invention relates to a recovery method of hydrocarbon-containing exhaust gas. Crude diesel or crude kerosene is pretreated by utilization of the rotary bed. Materials discharged from the liquid phase outlet of the rotary bed are adopted as an absorbent and used for adsorption treatment of the hydrocarbon-containing exhaust gas. The recovery method is simple in process, economic, reasonable and free of secondary pollution, and is suitable for adsorption recovery processes of the hydrocarbon-containing exhaust gas.

Description

technical field [0001] The invention relates to a rotary bed and an absorption method of hydrocarbon-containing waste gas, in particular to an absorption method of hydrocarbon-containing waste gas by absorption method. Background technique [0002] Various oil storage tanks, dirty oil storage tanks, oil loading (ships), oil processing and certain chemical processes generally emit a certain amount of exhaust gas under normal operating conditions, and these exhaust gases contain a relatively high concentration If the hydrocarbons are not recovered effectively, on the one hand, it will cause a large waste of resources, on the other hand, it will cause serious environmental pollution, and at the same time, there will be certain potential safety hazards. [0003] The recovery and treatment methods of hydrocarbon-containing waste gas are more commonly used, such as absorption method, adsorption method, condensation method, membrane oil gas recovery technology, etc., as described i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/20B01D53/18
Inventor 彭德强李欣齐慧敏王明星王璐瑶陈建兵刘志禹陈欣
Owner CHINA PETROLEUM & CHEM CORP
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