A coal tar hydrotreating method and a coal tar processing method
A processing method and technology for hydrotreating pretreatment, applied in hydrotreating process, treating hydrocarbon oil, petroleum industry, etc., can solve the problems of difficult catalyst recovery, unstable operation process, harsh reaction conditions, etc., and achieve good hydrotreating effect, reduced ash content and water content, reduced tendency to green coke
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Embodiment 1
[0114] (1) Pre-hydrogenation step
[0115] The structure of the gas-liquid mixer adopted in this embodiment is as follows: Figure 4 As shown, the components used to adjoin the liquid channel and the gas channel in the gas-liquid mixer are as follows image 3 The membrane tube shown (commercially purchased from Beijing Zhongtianyuan Environmental Engineering Co., Ltd.; the average pore diameter of the pores on the substrate is 100 μm; the average pore diameter of the pores on the porous membrane is 250 nm, and the pores on the porous membrane with a pore diameter in the range of 250-260 nm The proportion of the total pores is 95%; the porosity of the porous membrane is 45%); the porous membrane is located on the outer wall of the membrane tube; there are 19 channels evenly distributed, and the inner diameter of each liquid channel is 8mm. The channel on the membrane tube is used as a liquid channel, and the space formed by the outer wall of the membrane tube and the inner wal...
Embodiment 2
[0128] Adopt the method identical with embodiment 1 to process coal tar, difference is:
[0129] (1) Coal tar is a high-temperature coal tar extracted from fine chemicals such as phenol, naphthalene and anthracene, and its properties are shown in Table 1;
[0130] (2) In step (1), the components used to adjoin the liquid channel and the gas channel in the gas-liquid mixer are as follows figure 2 The membrane tube shown (commercially purchased from Beijing Zhongtianyuan Environmental Engineering Co., Ltd.; the average pore diameter of the pores on the substrate is 60 μm; the average pore diameter of the pores on the porous membrane is 50 nm, and the pores on the porous membrane with a pore diameter in the range of 20-200 nm The proportion of the total pores is 95%; the porosity of the porous membrane is 35%); the porous membrane is located on the inner wall of the membrane tube; there are 19 channels evenly distributed, and the inner diameter of each liquid channel is 3.3mm; t...
Embodiment 3
[0134] Adopt the method identical with embodiment 1 to process coal tar, difference is:
[0135] (1) Coal tar is a medium-low temperature coal tar by-product of dry distillation of semi-coke process, and its quality is listed in Table 1;
[0136] (2) In step (1), the member used to adjoin the liquid channel and the gas channel in the gas-liquid mixer is a pipe (commercially purchased from Beijing Zhongtianyuan Environmental Engineering Co., Ltd.; the average diameter of the holes on the pipe wall is 500nm , where the proportion of pores with a pore diameter in the range of 500-550nm to the total pores is 95%; the porosity is 25%); there are 19 channels evenly distributed, and the inner diameter of each liquid channel is 3.3mm. The filling rate of the pipe in the shell is 45%;
[0137] (3) In step (2), the fraction of the oil produced by hydrofining of coal tar with a distillate temperature greater than 150°C is used as the extractant, and the pre-hydrogenated oil is extracted...
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Abstract
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