Gravity discharge method for high-temperature oil residue
A technology of high temperature oil and gravity, applied in the field of high temperature discharge of product residues, can solve the problems of poor material safety, cumbersome operation, large volume of discharge tank, etc., and achieve the effect of increasing wear resistance, reducing operation difficulty and improving equipment service life.
Active Publication Date: 2013-10-30
CHNA ENERGY INVESTMENT CORP LTD +2
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Problems solved by technology
The equipment is intermittent operation. For the operation of large-scale production equipment or the equipment that requires continuous operation, the volume of the discharge tank is too large, the operation is cumbersome, and the safety of materials with high temperature is poor.
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Embodiment 1
[0029] Such as figure 1 As shown, a high-temperature oil residue gravity slagging method, the method is to discharge the product residue after direct liquefaction of coal through the slag discharge system at high temperature. Pipeline, gravity slag discharge pipeline, slag discharge valve and liquid level measuring device.
[0030] The separation tower comprises a tower bottom, a tower body 2, a tower connecting portion 6, a collector 7 and a tower top, and the tower body 2 is arranged between the tower top and the tower bottom, and the tower body 2 is provided with packing 5, and the tower body is close to A collector 7 is provided at the top of the tower. When the tower body is divided into multiple sections, the tower connecting parts 6 are used to connect the multi-section tower bodies; the bottom of the tower is in the shape of a cone, and the hot oil circulation line is drawn from the cone. The bottom of the tower is connected to a gravity slag discharge line; the tower...
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Abstract
The invention relates to a gravity discharge method for high-temperature oil residues. The method is characterized by: discharging direct coal liquefaction residues at a high temperature through a deslagging system. The method comprises the following steps, in particular, (1) carrying out a big circulating operation for coal liquefaction heat oil; (2) before feeding coal through a liquefaction apparatus, pouring the oil to a gravity deslagging pipe, and opening a blow-down valve to discharging the oil so as to enable the gravity deslagging pipe to be filled with the oil; (3) starting a vacuum system of a partition column while maintaining the circulation of the heat oil; (4) discharging materials containing solids to a waste coal tank system; (5) discharging the materials from bottom of a vacuum tower; (6) replacing the materials in the gravity deslagging pipe by the materials from the bottom of the vacuum tower; (7) realizing automatic deslagging through the gravity deslagging pipe. Compared to the prior art, dependence on rotary equipment during deslagging is reduced, operating load of a recirculating pump and operation difficulty of the partition column are decreased, running life of the recirculating pump is prolonged, stationarity of the partition column operating is improved, and reliability of a long period operation of the coal liquefaction apparatus is ensured.
Description
technical field [0001] The invention relates to a method for discharging oil residue, more specifically, a method for discharging high-temperature product residue after coal direct liquefaction reaction. Background technique [0002] The direct coal liquefaction process is the process of preparing coal powder and liquefied heavy oil produced in the liquefaction reaction process to make oil-coal slurry, which is converted into liquid products by hydrogenation and liquefaction at a high temperature of 455°C and a high pressure of 20Mpa. The entire liquefaction process It can be divided into coal slurry preparation unit, reaction unit and separation unit. No matter what process is used for direct coal liquefaction, the conversion rate of coal cannot reach 100%. In the end, there will always be a small amount of unreacted matter that needs to be discharged from the device. In addition, the inorganic minerals entrained in coal are mixed with liquefied oil and asphalt in solid for...
Claims
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IPC IPC(8): C10G1/06
Inventor 高山松舒歌平章序文杨葛灵李克健李云刘锋李永伦兰建华
Owner CHNA ENERGY INVESTMENT CORP LTD