A device and method for heat exchange and washing of oil and gas
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A technology of oil and gas and washing tanks, applied in the field of delayed coking, to achieve the effect of promoting enrichment, increasing outlet flow rate and eliminating dead zone
Active Publication Date: 2022-06-24
EAST CHINA UNIV OF SCI & TECH
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The device has good decoking effect, energy saving and low consumption, and is not prone to equipment blockage, but the route between the first spraying device and the oil and gas outlet is too short, and only relying on the condensation separator to remove the washing oil will cause a certain amount of washing oil to be carried in the oil and gas
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[0064] The present invention is further described below in conjunction with specific embodiments. However, it should be understood that these examples are only intended to illustrate the present invention and not to limit the scope of the present invention. In the following examples, the test methods without specific conditions are usually in accordance with conventional conditions, or in accordance with the conditions suggested by the manufacturer. All percentages and parts are by weight unless otherwise indicated.
[0065] The delayed coking unit of a chemical plant in Shanghai adopts the figure 1 A device and method for heat exchange and washing of oil and gas shown in the figure, the tower top oil and gas are mixed, cooled and heat exchanged, coke washed, gas-liquid separation and other processes, and most of the coke powder in the tower top oil and gas is washed to circulating oil. , thereby reducing the coke powder content entering the fractionation tower, where
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Abstract
The invention provides a device and method for heat exchange and washing of oil and gas. The device includes: an oil and gas heat exchange and washing tank, a filter, a flow meter, a liquid level gauge, a thermometer and an automatic regulating valve. Wax oil inlet, wax oil nozzle, oil gas nozzle, oil gas outlet, inner cylinder, heat exchange nozzle, washing nozzle, swirl plate, tank body, circulating oil outlet. The method includes: mixing the oil and gas at the top of the tower, cooling and exchanging heat, washing and coking, gas-liquid separation and other processes, washing most of the coke powder in the oil and gas at the top of the tower into the circulating oil, thereby reducing the content of coke powder entering the fractionation tower . After the circulating oil passes through the filter to remove the carried coke powder, part of it returns to the washing nozzle to continue washing the oil and gas, and the other part flows into the fractionating tower and enters the cycle again. The invention can effectively reduce the amount of coke powder entering the fractionation tower along with the oil and gas, thereby improving the product quality of the delayed coking unit, prolonging the operation cycle of the delayed coking unit and downstream units, and saving operating costs.
Description
technical field [0001] The invention relates to delayed coking technology in the field of petroleum refining, in particular to a device and method for heat exchange and washing of oil and gas, and more specifically, the device is used to mix oil and gas at the top of a tower, cool down and exchange heat, wash coke deposits, Processes such as gas-liquid separation wash most of the coke powder in the oil and gas at the top of the tower to the circulating oil, thereby reducing the content of coke powder in the oil and gas entering the fractionation tower. Background technique [0002] The delayed coking process has the advantages of good adaptability to raw materials, complete decarbonization, low equipment investment and operating costs, etc., and has now become an important means for refineries to deal with heavy and inferior crude oil. As far as its production characteristics are concerned, this is a process of continuous production and intermittent operation. Taking two co...
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