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Novel coal tar hydrocracking device and production method thereof

A hydrocracking and coal tar technology, applied in the field of coal tar, can solve the problems of difficult hydrodenitrogenation, low hydrogen content, high metal content, etc., to improve production efficiency and economic benefits, reasonable and practical design, and denitrification effect Good results

Inactive Publication Date: 2017-06-16
SHANDONG SHENGXING CHEM
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Problems solved by technology

[0004] Due to the high nitrogen content, metal content and low hydrogen content of coal tar feedstock, hydrodenitrogenation is difficult, and the hydrogen consumption required to achieve the target product is high, and the reaction heat release is large. The traditional hydrocracking unit cannot meet the requirements.

Method used

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  • Novel coal tar hydrocracking device and production method thereof

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specific Embodiment 1

[0015] The hydrogenation pretreatment unit is equipped with a protection reactor and a hydrotreatment reactor, an independent separation system and a debutanizer, and part of the bottom oil of the debutanizer is recycled to the raw material buffer tank of the hydrogenation pretreatment unit, and part is sent to To the feed buffer tank of the hydrocracking unit; the hydrocracking unit is equipped with two reactors of refining and cracking, and the oil produced by the cracking reaction is separated and fractionated, and naphtha, kerosene and diesel oil are taken out of the unit as products, and tail oil and some coal Diesel is recycled back to the hydrocracking unit feed buffer tank, and the hydropretreatment and hydrocracking units share a new hydrogen compressor and a recycle hydrogen compressor.

[0016] (1) Hydrogenation pretreatment: raw material oil and circulating oil are mixed at 110t / h, enter the pretreatment raw material buffer tank, pressurized by the pretreatment raw ...

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Abstract

The invention provides a novel coal tar hydrocracking device and a production method thereof. The novel coal tar hydrocracking device is mainly formed by a new hydrogen compressor (1), a heating furnace (2), a protection reactor (3), a pretreatment reactor (4), a first heat high-pressure gas-liquid separation tank (5), a first heat low-pressure gas-liquid separation tank (6), a debutanization tower (7), a main water tube (8), an air-cooled gas tank (9), a first cold high-pressure gas-liquid separation tank (10), a first low low-pressure gas-liquid separation tank (11), a finishing reactor (12), a cracking reactor (13), a second high-pressure gas-liquid separation tank (24), a second low-pressure gas-liquid separation tank (15), an air cooler (16), a circulating hydrogen compressor (17), a second cold high-pressure gas-liquid separation tank (18), a circulating hydrogen compressor inlet liquid separation tank (19), a second cold low-temperature gas-liquid separation tank (20), a fractioning tower (21), a tower top gas tube (22), a light naphtha tube (23), a heavy naphtha tube (24), a kerosene tube (25) and a diesel oil tube (26). The novel coal tar hydrocracking device has the advantages of reasonable and practical design, good denitrification effect, low energy consumption, and great increase of the production efficiency and the economic benefit.

Description

[0001] 1. Technical field [0002] The invention relates to the technical field of coal tar, in particular to a novel coal tar hydrocracking equipment and a preparation method thereof. [0003] 2. Background technology [0004] Due to the high nitrogen content and metal content of coal tar feed, low hydrogen content, hydrodenitrogenation is difficult, and the hydrogen consumption required to achieve the target product is high, and the reaction heat release is large, the traditional hydrocracking unit cannot meet the requirements. The invention adopts a two-stage full-cycle hydrocracking technology to process inferior raw materials. [0005] 3. Contents of the invention [0006] The object of the present invention is to provide a novel coal tar hydrocracking equipment and a preparation method thereof. The technical solution is: the new hydrogen compressor is connected to the circulating hydrogen compressor through pipelines, the heating furnace is connected to the protection r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/12
CPCC10G65/12C10G2300/202
Inventor 延廷军陈治强苏爱平张宏强吕治峰
Owner SHANDONG SHENGXING CHEM
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