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Treating method for waste gas containing sulfur and hydrocarbons

A treatment method, sulfur-containing hydrocarbon technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve problems such as high operating costs, economic impact, and undisclosed prior art, and achieve the effect of smooth operation

Active Publication Date: 2015-05-06
SINOPEC DALIAN RES INST OF PETROLEUM & PETROCHEM +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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  • Treating method for waste gas containing sulfur and hydrocarbons
  • Treating method for waste gas containing sulfur and hydrocarbons
  • Treating method for waste gas containing sulfur and hydrocarbons

Examples

Experimental program
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Effect test

Embodiment 1

[0038] The gas discharged from the tank roof of a sour water tank farm has a temperature of about 45°C and a total hydrocarbon concentration of 10×10 4 ~100×10 4 mg / m 3 , the sulfide concentration is 1000~3000 mg / m 3 . The absorbent is crude kerosene from the fractionation tower of the refining unit at a temperature of 60°C, and the solvent used in the lye absorption unit is NaOH solution with a mass fraction of 40%.

[0039] 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 15°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 waste gas is 0.1, the rich absorbent discharged from the bubbling bed and the gas phase discharged from the rotating bed are re-absorbed and mixed by an injector, and then used as th...

Embodiment 2

[0043] 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 concentration of sulfide and organic sulfide is 200-500 mg / m 3 , the absorbent is gas oil from the fractionation tower of the catalytic cracking unit of the refinery, and the temperature is 60°C.

[0044] Gas oil enters as figure 1 For the rotary bed shown in the structure, the bed rotation speed is 960 rpm. The liquid phase and exhaust gas discharged from the rotating bed enter the bubbling bed for hydrocarbon absorption, and 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 exhaust 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 the feed to the diesel hydrotreating unit. The exhaust gas absorbed by ...

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Abstract

The invention discloses a treating method for waste gas containing sulfur and hydrocarbons. The method comprises the following steps that: crude diesel or crude kerosene enters a rotating packed bed for devolatilization pretreatment; a material discharged from the liquid phase outlet of the rotating packed bed enters absorption equipment as an absorbent and contacts and reacts with waste gas containing sulfur and hydrocarbons, and hydrocarbons in the waste gas are recovered; waste gas discharged from the absorption equipment enters an alkali liquor absorption device for removal of the sulfur-containing compounds in the waste gas, and a rich absorption solvent discharged from the absorption equipment directly enters a hydrogenation device; and waste gas discharged from the alkali liquor absorption device meets national standard and is discharged. The treating method for the waste gas containing sulfur and hydrocarbons provided by the invention adopts the rotating packed bed for pretreatment of the crude diesel or crude kerosene so as to remove foreign matters like hydrogen sulfide and volatile components in the crude diesel or crude kerosene, thereby preventing the waste gas from producing secondary pollution; and the method has the advantages of simple process, economical performance and reasonability and is applicable to absorption treating process for the waste gas containing sulfur and hydrocarbons.

Description

technical field [0001] The invention relates to a treatment method for sulfur-containing and hydrocarbon-containing waste gas, in particular to a method for treating sulfur-containing and hydrocarbon-containing waste gas by using a rotating bed. 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 techn...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/52
Inventor 王岩彭德强王璐瑶陈建兵孟凡飞陈新王阳峰王明星
Owner SINOPEC DALIAN RES INST OF PETROLEUM & PETROCHEM
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