Temperature control method for hydrogenation process and design method and applications thereof
A kind of hydrogenation equipment, one-way technology, applied in the direction of hydrotreating process, chemical instruments and methods, petroleum industry, etc., can solve problems such as loss, plant shutdown, shutdown, etc., to achieve the effect of improving operability and facilitating automatic control
Active Publication Date: 2016-03-30
CATECH TECH
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Problems solved by technology
However, the consequence of this is that once the temperature in the separator rises, it cannot respond to the upstream temperature control system in time, causing a large number of polycondensation reactions in the separator, causing serious coking and blockage, and affecting the entire device. Shutdowns, even plant-wide shutdowns, bring huge losses
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[0033] In order to further illustrate the specific features of the present invention, it will be described in conjunction with the accompanying drawings and specific embodiments.
[0034] This example is a method for controlling the temperature of the slurry bed hydrogenation equipment involved in the oil-coal mixing process. The hydrogenation reactor is two-stage, and the separator is six-stage. The specific temperature control process is as follows:
[0035] Such as figure 1 As shown, the hydrogenation and reaction flow process of the slurry bed reactor of the embodiment of the present invention, first make up the hydrogen 7 to mix with the circulating hydrogen 8, and then mix with the high-temperature and high-pressure separator 6 outlet gas, that is, the hot high-fraction gas 10 in the hydrogen high-fraction gas The heat exchange at heat exchanger 1 raises the temperature to hydrogen at 425°C. Then 20% of the hydrogen is mixed with the oil-coal slurry feed 9 and enters th...
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The invention discloses a temperature control method for a hydrogenation process and a design method and applications thereof. The temperature control method comprises a step of injecting a coolant into a hydrogenation device to control the temperature, the injection places are respectively located on a pipe in front of an inlet of a some-stage or multistage reactor, in a pipe in front of an inlet of a some-stage or multistage reactor and / or on a some-stage or multistage separator, and the coolant is conveyed by at least one cooling pipe and the flow rate of the coolant can be controlled. The temperature control method disclosed by the invention is simple in operation, and easy to implement in project implementation, can effectively prevent the formation of temperature runaway and vortex flows of a reactor, and avoid the occurrence of a coking phenomenon in a separator, thereby greatly improving the operation stability of the hydrogenation device.
Description
technical field [0001] The invention relates to a multi-optimized slurry bed hydrogenation equipment temperature control method and its design method and application. The hydrogenation equipment includes a slurry bed hydrogenation reactor and a separation system, and belongs to the fields of petrochemical and coal chemical industries. Background technique [0002] In recent years, with the continuous increase of crude oil extraction and the continuous decrease of conventional crude oil reserves, the trend of crude oil inferiority has become more and more serious. Among the middle distillate oil obtained by direct distillation of crude oil and the middle distillate oil obtained by secondary processing such as coking and catalytic cracking, etc. The S and N content of the carbon dioxide also increased accordingly. However, the market demand for light oil continues to increase, and people's awareness of environmental protection is also increasing. Environmental protection laws ...
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IPC IPC(8): C10G67/02C10G65/18
CPCB01J8/22G05D23/19C10G67/02C10G65/18C10G2300/10C10G2300/1037C10G2300/107C10G2300/1077
Inventor 李苏安邓清宇王坤朋
Owner CATECH TECH