CN216273956U

CN216273956U - High-efficiency heavy oil deep processing device

Info

Publication number: CN216273956U
Application number: CN202120602158.1U
Authority: CN
Inventors: 王征; 任琪; 薛飞; 王亮; 张向军; 张政学; 杨兵强; 王化民; 马兴川; 闫龙
Original assignee: Ningxia Ruike Chemical Co ltd
Current assignee: Ningxia Ruike Chemical Co ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2022-04-12
Anticipated expiration: 2031-03-24

Abstract

The utility model provides a high efficiency heavy oil deep-processing device, belongs to petrochemical equipment technical field, and the riser reactor, the riser reactor is used for the catalytic cracking reaction, be provided with the terminator inlet pipe on the riser reactor, promote gas inlet pipe and heavy oil inlet tube in advance, the terminator inlet pipe is provided with sump oil inlet pipe and naphtha inlet pipe, it is provided with dry gas inlet pipe and vapour inlet pipe to promote the gas inlet pipe in advance. And the dirty oil or naphtha is introduced into the riser reactor from a dirty oil feeding pipe or a naphtha feeding pipe, so that on one hand, the upper temperature of the riser reactor is controlled, secondary cracking of oil and gas is avoided, and on the other hand, the dirty oil or naphtha generates short-flow reaction, so that the reaction is fast performed to improve the quality of oil products and improve the yield of products.

Description

High-efficiency heavy oil deep processing device

Technical Field

The utility model belongs to the technical field of petrochemical equipment, and particularly relates to a high-efficiency heavy oil deep processing device.

Background

With the rapid development of the country, the transportation is more and more convenient, the economic level of the country is greatly improved, and the number of trips is increased, so that the demand of light oil is greatly increased.

The main process of heavy oil deep processing is catalytic cracking of heavy oil, the process is that heavy oil is subjected to gas-solid catalytic cracking reaction on a catalyst to generate light oil, and oil gas generated by heavy oil catalytic cracking is separated to mainly obtain liquefied gas, gasoline, diesel oil and dry gas. In actual production, the catalytic cracking reaction of heavy oil is completed at the middle-lower part of the riser reactor, and the temperature of oil gas generated by the reaction is too high when the oil gas passes through the upper part of the riser reactor, so that secondary cracking or thermal cracking reaction can occur, and high dry gas and high coke formation are caused.

At present, the above problems are solved by adding a terminating agent at the upper part of a riser reactor, and the conventional terminating agent generally uses gasoline, diesel oil and the like produced by a device, but the method can cause the reduction of the product yield.

Some unqualified oil, called dirty oil, is produced in the process of heavy oil catalytic cracking reaction, and the traditional method for treating the dirty oil is to introduce the dirty oil into a device for reaction in the form of raw material, but the method can cause the content of gasoline and diesel oil in the product to be low.

Disclosure of Invention

In view of the above, it is necessary to provide a high-efficiency heavy oil deep processing device to solve the problems that the conventional terminating agent generally uses gasoline, diesel oil and the like produced by the device, but the method causes the yield of the product to be reduced and the content of the gasoline and the diesel oil in the product to be reduced by the conventional dirty oil treatment method.

A high efficiency deep processing apparatus for heavy oil, comprising:

the riser reactor, the riser reactor is used for catalytic cracking reaction, be provided with the terminator inlet pipe on the riser reactor, promote gas inlet pipe and heavy oil inlet pipe in advance, the terminator inlet pipe is provided with sump oil inlet pipe and naphtha inlet pipe, promote the gas inlet pipe in advance and be provided with dry gas inlet pipe and vapour inlet pipe.

Preferably, the dry gas feed pipe is inclined and forms an acute angle with the steam feed pipe, and the steam feed pipe and the dry gas feed pipe are controlled by a proportional controller.

Preferably, the corner of pre-lifting gas inlet pipe is an arc-shaped corner, and the dry gas inlet pipe is arranged on the outer wall of the arc-shaped corner of the pre-lifting gas inlet pipe.

Preferably, the heavy oil inlet pipe, the dirty oil feed pipe, the naphtha feed pipe, the dry gas feed pipe and the steam feed pipe of the riser reactor are provided with flow control valves.

Preferably, the high-efficiency heavy oil deep processing device further comprises a settler, wherein the settler is used for gas-solid separation and is provided with an oil mixture inlet, an oil gas outlet and a catalyst outlet, and the oil mixture inlet of the settler is connected with the oil mixture outlet of the riser reactor.

Preferably, the high-efficiency heavy oil deep processing device further comprises a regenerator, wherein the regenerator is used for regenerating a catalyst and is arranged at the lower part of the settler, the inlet of the regenerator is connected with the catalyst outlet of the settler, and the outlet of the regenerator is connected with the catalyst inlet of the riser reactor.

Preferably, the high efficiency heavy oil deep processing device still includes the fractionating tower, the fractionating tower is used for oil gas fractionation, and the bottom sets up the sewage export, and the middle part sets up liquefied gas export, gasoline export and diesel oil export, and the top sets up oil gas entry and dry gas export, the oil gas entry linkage of fractionating tower's oil gas export of settler, the dry gas exit linkage of fractionating tower dry gas inlet pipe.

Preferably, the settler is provided with at least two cyclones.

Preferably, a catalyst conveying pipe is arranged at the lower end of the regenerator, an outlet of the catalyst conveying pipe is connected with a catalyst inlet of the riser reactor, and a control valve is arranged on the catalyst conveying pipe.

By adopting the technical scheme, the utility model has the beneficial effects that: and (2) introducing dirty oil into the riser reactor, on one hand, controlling the temperature of a reaction zone in the riser reactor to prevent the reaction temperature from being overhigh, and on the other hand, carrying out short-flow reaction on the dirty oil under the action of a catalyst to quickly react so as to improve the quality of an oil product and improve the yield of the product, wherein the octane number of gasoline in the obtained product can reach 91-92. The device can convert 96-98% of dirty oil into catalytic gasoline, reasonably controls the reaction temperature of heavy oil catalytic cracking due to the injection of the dirty oil, properly increases the feeding amount of heavy oil and a catalyst, increases the yield of light oil, and generates great economic benefit. If this device lets in the naphtha, then the effect that finally reaches is similar with the effect of letting in the sump oil, can improve the productivity of product, improves the quality of oil.

Drawings

Fig. 1 is a schematic structural diagram of a high-efficiency heavy oil deep processing device.

In the figure: riser reactor 100, settler 200, regenerator 300, fractionation column 400, terminator feed line 110, pre-lift gas feed line 120, cyclone 210, catalyst transfer line 310, sump oil feed line 111, naphtha feed line 112, dry gas feed line 121, vapor feed line 122.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Referring to fig. 1, an embodiment of the present invention provides a high efficiency heavy oil deep processing apparatus, including a riser reactor 100, where the riser reactor 100 is used for a catalytic cracking reaction, the riser reactor 100 is provided with a terminator feed pipe 110, a pre-lift gas feed pipe 120, and a heavy oil inlet pipe, the terminator feed pipe 110 is provided with a dirty oil feed pipe 111 and a naphtha feed pipe 112, and the pre-lift gas feed pipe is provided with a dry gas feed pipe 121 and a vapor feed pipe 122.

Dirty oil is introduced into the riser reactor 100 from a dirty oil inlet pipe 111 or naphtha is introduced into the riser reactor 100 from a naphtha inlet pipe 112, dry gas and steam enter a pre-lift gas inlet pipe 120 through a dry gas inlet pipe 121 and a steam inlet pipe 122 respectively to form pre-lift gas, the dirty oil or naphtha is introduced into the riser reactor 100, on one hand, the temperature of the upper part of the riser reactor can be reduced, oil gas is prevented from secondarily reacting rapidly when the dirty oil or naphtha enters the riser reactor 100, secondary cracking is avoided, the quality of oil products is improved, the pre-lift gas formed by the dry gas and the steam can effectively protect a catalyst, the catalyst is prevented from cracking, the selectivity of the catalyst is improved, and the reaction efficiency of heavy oil catalytic cracking reaction is effectively improved.

Further, the dry gas feed pipe 121 is obliquely arranged and forms an acute angle with the vapor feed pipe 122, and the vapor feed pipe 122 and the dry gas feed pipe 121 are controlled by a ratio controller so as to adjust the introduction ratio of the dry gas and the vapor.

Further, the corner of the pre-lift gas inlet pipe 120 is an arc-shaped corner, and the dry gas inlet pipe 121 is disposed on the outer wall of the arc-shaped corner of the pre-lift gas inlet pipe 120, so that the dry gas is sucked into the pre-lift gas inlet pipe 120 when the steam passes through the arc-shaped corner.

Further, a heavy oil inlet pipe, a dirty oil inlet pipe 111, a naphtha inlet pipe 112, a dry gas inlet pipe 121, and a vapor inlet pipe 122 of the riser reactor 100 are provided with flow control valves, so that the feeding amount can be conveniently controlled.

Further, the high-efficiency heavy oil deep processing device further comprises a settler 200, wherein the settler 200 is used for gas-solid separation and is provided with an oil mixture inlet, an oil gas outlet and a catalyst outlet, and the oil mixture inlet of the settler 200 is connected with the oil mixture outlet of the riser reactor 100.

Further, the high-efficiency heavy oil deep processing device further comprises a regenerator 300, wherein the regenerator 300 is used for regenerating a catalyst and is arranged at the lower part of the settler 200, an inlet of the regenerator 300 is connected with a catalyst outlet of the settler 200, and an outlet of the regenerator 300 is connected with a catalyst inlet of the riser reactor 100, so that the catalyst is recycled.

Further, high efficiency heavy oil deep-processing device still includes fractionating tower 400, fractionating tower 400 is used for the oil gas to fractionate, and the bottom sets up the sewage export, and the middle part sets up liquefied gas export, gasoline export and diesel oil export, and the top sets up oil gas entry and dry gas export, the oil gas entry of fractionating tower 400 connects the oil gas export of settler 200, the dry gas exit linkage of fractionating tower 400 promotes the dry gas entry of gas inlet pipe 120 in advance, and the dry gas that the reaction produced lets in riser reactor 100, has realized the cyclic utilization of dry gas.

Further, the heavy oil inlet of the riser reactor 100 and the pre-lift gas feed pipe 120 are provided with flow control valves, respectively, for controlling the amounts of the heavy oil and the pre-lift gas entering the riser reactor 100.

Furthermore, the settler is provided with at least two cyclone separators, so that the separation efficiency is improved.

Further, a catalyst conveying pipe is arranged at the lower end of the regenerator, an outlet of the catalyst conveying pipe is connected with a catalyst inlet of the riser reactor, and a control valve is arranged on the catalyst conveying pipe, so that the amount of the catalyst entering the riser reactor 100 can be conveniently controlled.

While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.

Claims

1. A high efficiency heavy oil deep processing device, characterized by includes: the riser reactor, the riser reactor is used for carrying out catalytic cracking reaction, be provided with the terminator inlet pipe on the riser reactor, promote gas inlet pipe and heavy oil inlet pipe in advance, the terminator inlet pipe is provided with sump oil inlet pipe and naphtha inlet pipe, promote the gas inlet pipe in advance and be provided with dry gas inlet pipe and vapour inlet pipe.

2. The high efficiency deep processing apparatus for heavy oil as set forth in claim 1, wherein: the dry gas feed pipe is obliquely arranged and forms an acute angle with the steam feed pipe, and the steam feed pipe and the dry gas feed pipe are controlled by a proportional controller.

3. The high efficiency deep processing apparatus for heavy oil as set forth in claim 2, wherein: the corner of promoting the gas inlet pipe in advance is the arc corner, the dry gas inlet pipe sets up on the arc corner outer wall of promoting the gas inlet pipe in advance.

4. The high efficiency deep processing apparatus for heavy oil as set forth in claim 1, wherein: the heavy oil inlet pipe, the dirty oil feeding pipe, the naphtha feeding pipe, the dry gas feeding pipe and the steam feeding pipe of the riser reactor are all provided with flow control valves.

5. The high efficiency deep processing apparatus for heavy oil as set forth in claim 1, wherein: the high-efficiency heavy oil deep processing device further comprises a settler, wherein the settler is used for gas-solid separation and is provided with an oil mixture inlet, an oil gas outlet and a catalyst outlet, and the oil mixture inlet of the settler is connected with the oil mixture outlet of the riser reactor.

6. The apparatus for further processing heavy oil with high efficiency as set forth in claim 5, wherein: the high-efficiency heavy oil deep processing device further comprises a regenerator, wherein the regenerator is used for regenerating a catalyst and is arranged at the lower part of the settler, the inlet of the regenerator is connected with the catalyst outlet of the settler, and the outlet of the regenerator is connected with the catalyst inlet of the riser reactor.

7. The apparatus for further processing heavy oil with high efficiency as set forth in claim 6, wherein: the high-efficiency heavy oil deep processing device further comprises a fractionating tower, wherein the fractionating tower is used for oil gas fractionation, a sewage outlet is formed in the bottom of the fractionating tower, a liquefied gas outlet, a gasoline outlet and a diesel oil outlet are formed in the middle of the fractionating tower, an oil gas inlet and a dry gas outlet are formed in the top of the fractionating tower, the oil gas inlet of the fractionating tower is connected with the oil gas outlet of the settler, and the dry gas outlet of the fractionating tower is connected with the dry gas inlet pipe.

8. The high efficiency deep processing apparatus for heavy oil according to claim 7, wherein: the settler is provided with at least two cyclones.

9. The high efficiency deep processing apparatus for heavy oil according to claim 8, wherein: the lower end of the regenerator is provided with a catalyst conveying pipe, the outlet of the catalyst conveying pipe is connected with the catalyst inlet of the riser reactor, and the catalyst conveying pipe is provided with a control valve.