Method for dechlorination of hydrogenation reaction system
A hydrogenation reaction and reaction technology, which is applied in the fields of hydrogenation treatment process, petroleum industry, and hydrocarbon oil treatment, can solve problems such as the risk of clogging and corrosion, so as to avoid the reduction of heat utilization, reduce unplanned shutdown, and avoid clogging of heat exchange tube bundles Effect
Inactive Publication Date: 2019-09-10
SINOPEC GUANGZHOU ENG +1
View PDF7 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0010] The purpose of the present invention is to provide a method for dechlorination of a hydrogenation reaction system to solve the technical problem of increased risk of clogging and corrosion in hydrogenation units in the prior art due to the presence of chlorine
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
[0031] The present invention will be further described below in conjunction with accompanying drawing:
[0032] figure 1 It is a schematic flow chart of the reaction part of a hydrocracking unit, combined below figure 1 The technical scheme of the present invention is described in detail, figure 1 It is only drawn for explaining the basic contents of the invention and does not limit the scope of the present invention.
[0033] The chlorine content in the raw oil of the hydrocracking unit is 6 ppm. The raw material oil and mixed hydrogen enter the hydrogenation reactor (1) from the upper part after being heated by the reaction effluent-reaction feed heat exchanger (7) and the reaction feed heating furnace (2). The reaction effluent enters the hot high-pressure separator (3) after being heated by the heat exchanger for gas-liquid separation. The operating pressure of the hot high-pressure separator is 13.63MPa, and the operating temperature is 260°C.
[0034] According to t...
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 discloses a method for dechlorination of hydrogenation reaction effluent in the field of petroleum refining and chemical industry. Raw oil and mixed hydrogen enter a hydrogenation reactor from the upper part after being heated by a reaction effluent and a reaction feed heating furnace, and the reaction effluent enters a hot high-pressure separator for gas-liquid separation after being heated by a reaction effluent-reaction feed heat exchanger. The hot high-pressure gas sequentially passes through the hot high-pressure gas heat exchanger for heat extraction, and then enters the cold high-pressure separator after being cooled by the hot high-pressure gas air cooler for oil, gas and water three-phase separation. The hot high-pressure oil enters the hot low-pressure separator forgas-liquid separation after being decompressed by the regulating valve. Characterized in that a water injection point is arranged on the hot high gas distributor line, and the water injection point is arranged at the inlet of the hot high gas distributor heat exchanger and the inlet of the hot high gas distributor air cooler; At the same time, a water injection point is set behind the hot high-grade oil regulating valve. By adopting the method provided by the invention, under the condition that the investment of the device is not increased much, HCl in hydrogenation reaction effluent can be effectively removed by continuously injecting water in front of a high-pressure air cooler and a high-pressure air cooler, blockage of heat exchange tube bundles, under-scale corrosion, dew point corrosion and erosion caused by deposition of NH4Cl salt and NH4HS salt are avoided, unplanned shutdown of the device is reduced, and safe and long-term operation of the device is realized.
Description
technical field [0001] The invention belongs to the technical field of petroleum refining, and in particular relates to a dechlorination method for a hydrogenation reaction system. Background technique [0002] With the gradual reduction of conventional oil resources, the quality of crude oil is moving towards a trend of heavy and poor quality, mainly manifested in the obvious increase in the output of high-sulfur crude oil. Due to the addition of various types of organic chlorides in the oil recovery additives of high-sulfur crude oil, the raw materials of the secondary processing unit contain a considerable amount of chloride ions, causing the corrosion problem of the hydrogenation unit to become more and more serious, and frequent leakage in industrial applications Accidents cause the device to fail to operate for a long period of time. [0003] The hydrogenation unit is divided into a heat separation process and a cold separation process. The heat separation process mea...
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 IPC IPC(8): C10G67/00
CPCC10G67/00
Inventor 李立权百璐陈崇刚郭为民于凤昌
Owner SINOPEC GUANGZHOU ENG