A method for treating coking tail gas
A coking tail gas and treatment method technology, applied in chemical instruments and methods, separation methods, steam condensation, etc., can solve the problems of low safety, unsatisfactory treatment results, high energy consumption, etc., and achieve good absorption effect and easy regeneration of absorption effect , the effect of small circulation
Active Publication Date: 2017-08-25
SINOPEC NINGBO ENG +2
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] The problem to be solved by the present invention is to provide a coking tail gas treatment method for the existing technology to solve a series of problems in the prior art, such as low safety, high energy consumption, unstable absorption solvent, and unsatisfactory treatment results.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0028] Under the suction of the liquid-air jet pump 3, the coking tail gas from the cold coke water hot water tank with a temperature of 95-98°C and an absolute pressure of 80KPa enters the condensation separator 1, and the coking tail gas goes to the shell side of the condensation separator, and the condensation separator There is a liquid storage space 11 at the bottom of the shell side. The coking tail gas is cooled to 32°C by the circulating cooling water from the condensing separator tube side of the public works, and 98% of the water vapor and macromolecular hydrocarbons in the coking tail gas are condensed and precipitated. The liquid storage space at the bottom of the condensation separator is enriched and sent back to the delayed coking through the condensate pump 2 for further treatment.
[0029] After the liquid phase is separated, ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a coking tail gas treatment method, which is characterized in that it includes the following steps: after the coking tail gas enters the separated liquid phase, it enters the liquid-gas jet pump, mixes it with the methanol that enters the liquid-gas jet pump from the liquid phase inlet, and sends it together into the storage liquid of the absorption tower; the gas phase washes out part of the sulfur components and benzene series in the storage liquid, bubbles out from the storage liquid, and countercurrently contacts with the low-temperature washed methanol that enters the absorption tower from the middle, and the sulfur components and The benzene series is dissolved in the washing methanol and further washed out from the coking tail gas; the washed waste gas enters the activated carbon packing section at the top of the absorption tower for adsorption and then is emptied; The first part is sent to regeneration, and the second part is divided into two parts again. After the first part is mixed with lean methanol, it enters from the middle part of the absorption tower as washing methanol, and the second part is sent into the liquid-gas jet pump; the flow rate of the second part is the same as that of the second part. The pressure of the liquid-air jet pump is matched.
Description
technical field [0001] The invention relates to a method for treating coking tail gas, in particular to a method for treating coking tail gas containing a large amount of water vapor, hydrocarbons and sulfides volatilized in delayed coking cooling and cutting water of an oil refinery. Background technique [0002] At present, the decoking technology of delayed coking in my country widely adopts the method of hydraulic decoking. During the cooling and removal of coke, pollutants such as sewage, coke powder, dirty oil and waste gas will be produced, especially in the water supply cooling coke and soaking coke of the device. , During the overflow process, a large amount of sewage containing oil, sulfur, and benzene series will be produced at a temperature of about 100 ° C, followed by a large amount of organic pollutants such as sulfides and hydrocarbons volatilized at high temperatures. Exhaust gas is coking tail gas. The composition of these gases is complex, and the moisture c...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B01D5/00B01D53/14B01D53/04
Inventor 夏蕾夏兰生涂林许仁春卢新军黄剑平
Owner SINOPEC NINGBO ENG