CN-224207977-U - Protective reactor applied to hydrotreatment reactor

CN224207977UCN 224207977 UCN224207977 UCN 224207977UCN-224207977-U

Abstract

The utility model discloses a protection reactor applied to a hydrotreating reactor, which comprises a feed port component, a filtering reaction tower, a hydrogenation component and the hydrotreating reactor, wherein the feed port component provides crude oil to be treated for the filtering reaction tower, the hydrogenation component provides hydrogen for the filtering reaction tower, the filtering reaction tower is connected with the hydrotreating reactor, the filtering reaction tower transmits the treated crude oil to the hydrotreating reactor for further reaction, the feed port component comprises a first feed port, a second feed port and a third feed port, the filtering reaction tower comprises a first bed layer, a second bed layer and a third bed layer, the first bed layer, the second bed layer and the third bed layer are sequentially arranged from top to bottom, the first feed port is connected with the first bed layer, the second feed port is connected with the second bed layer, and the third feed port is connected with the third bed layer.

Inventors

WANG FUQUAN
CAO WEIXIONG
YU JIANKE
ZHANG MINGQIANG
WANG LV
JIN BIHUA

Assignees

宁波博汇化工科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250527

Claims (7)

1. The protection reactor for the hydrotreatment reactor is characterized by comprising a feed port component, a filtering reaction tower, a hydrogenation component and a hydrotreatment reactor, wherein the feed port component provides crude oil to be treated for the filtering reaction tower, the hydrogenation component provides hydrogen for the filtering reaction tower, the filtering reaction tower is connected with the hydrotreatment reactor, the filtering reaction tower conveys the treated crude oil to the hydrotreatment reactor for further reaction, the feed port component comprises a first feed port, a second feed port and a third feed port, the filtering reaction tower comprises a first bed layer, a second bed layer and a third bed layer, the first bed layer, the second bed layer and the third bed layer are sequentially arranged from top to bottom, the first feed port is connected with the first bed layer, the second feed port is connected with the second bed layer, the third feed port is connected with the third bed layer, crude oil enters from the first feed port and sequentially passes through the first bed layer, the second bed layer and the third bed layer, crude oil enters from the second feed port and sequentially passes through the second bed layer and the third bed layer, and crude oil enters from the third feed port and passes through the third bed layer.
2. The guard reactor for a hydrotreating reactor as in claim 1, wherein a first auxiliary bed is disposed between the first bed and the second bed, a second auxiliary bed is disposed between the second bed and the third bed, crude oil passes through the first bed and the first auxiliary bed in sequence when passing through the first feed inlet, and then enters the second bed, and crude oil passes through the second bed and the second auxiliary bed in sequence when passing through the second feed inlet, and then enters the third bed.
3. The guard reactor for a hydrotreating reactor as in claim 1, wherein said first bed, said second bed and said third bed are each provided with a top-of-bed thermometer and a bottom-of-bed thermometer.
4. A guard reactor for a hydroprocessing reactor according to claim 1, wherein said first, second and third feed ports are each connected with a thermometer.
5. The guard reactor for a hydroprocessing reactor according to claim 1, wherein the first, second and third beds are each provided with a bed pressure difference detector for calculating the service lives of the first, second and third beds.
6. The protective reactor for a hydrotreating reactor as in claim 1, wherein said hydrogenation unit comprises a hydrogen source and a hydrogenation discharge line, and a flowmeter is provided on the hydrogenation discharge line for counting the amount of hydrogen input.
7. The guard reactor for a hydrotreating reactor as in claim 1, wherein said second feed port and said third feed port are each connected with a switching valve assembly for controlling the opening and closing of the second feed port and the third feed port.

Description

Protective reactor applied to hydrotreatment reactor Technical Field The utility model relates to the field of chemical industry, in particular to a protective reactor applied to a hydrotreating reactor. Background In the field of energy and chemical industry, crude oil is taken as an important basic resource, and the development of processing technology of the crude oil has a key meaning for guaranteeing energy supply and promoting industrial progress. The crude oil hydrotreating technology is one of the core processes in the crude oil refining process, and hydrogen is subjected to chemical reaction with sulfur, nitrogen, oxygen and other impurities in crude oil under the action of certain temperature, pressure and catalyst, so that the hydrogen is converted into substances such as hydrogen sulfide, ammonia, water and the like which are easy to separate, the impurity content in the oil is effectively reduced, the quality of the oil is improved, and the increasingly strict environmental protection standard and the product quality requirement are met. However, existing crude oil hydrotreating technology faces many challenges in practical applications. Crude oil itself has complex components and contains a large amount of impurities such as particles and jelly in addition to sulfur, nitrogen and oxygen elements which are removed by the target. During the hydrotreating process, these impurities gradually accumulate in the hydrotreating reactor as the reaction proceeds, resulting in plugging of the reactor internal beds. Once the reactor bed is plugged, the bed pressure drop increases dramatically. Actual production data shows that the bed pressure drop of the hydrotreating reactor approaches the design value of 0.5Mpa for less than one year under the current process conditions. To address the problem of excessive bed pressure drop, businesses often need to shut down the process for changing the agent once a year. Frequent downtime not only increases equipment maintenance costs and labor costs, but also severely affects continuous and stable operation of the device. More importantly, as the pressure drop of the bed layer increases, the throughput of the device is reduced, and the design load cannot be achieved. The method not only leads to the reduction of crude oil processing efficiency, so that enterprises are difficult to realize expected production targets, but also can greatly increase device energy consumption, further compress profit margin of the enterprises and reduce economic benefits. Disclosure of utility model The utility model aims to solve the technical problem of providing a protective reactor applied to a hydrotreating reactor, and the continuous operation time of the hydrotreating reactor can be greatly prolonged. The technical scheme includes that the protective reactor applied to the hydrotreatment reactor comprises a feed port component, a filtering reaction tower, a hydrogenation component and the hydrotreatment reactor, wherein the feed port component provides crude oil to be treated for the filtering reaction tower, the hydrogenation component provides hydrogen for the filtering reaction tower, the filtering reaction tower is connected with the hydrotreatment reactor, the filtering reaction tower transmits the treated crude oil to the hydrotreatment reactor for further reaction, the feed port component comprises a first feed port, a second feed port and a third feed port, the filtering reaction tower comprises a first bed layer, a second bed layer and a third bed layer, the first bed layer, the second bed layer and the third bed layer are sequentially arranged from top to bottom, the first feed port is connected with the first bed layer, the second feed port is connected with the second bed layer, the third feed port is connected with the third bed layer, crude oil sequentially passes through the first bed layer, the second bed layer and the third bed layer from the first feed port, crude oil sequentially passes through the second bed layer and the third bed layer from the second feed port, and the crude oil sequentially passes through the third bed layer from the second feed port. The further preferable scheme of the utility model is that a first auxiliary bed layer is arranged between the first bed layer and the second bed layer, a second auxiliary bed layer is arranged between the second bed layer and the third bed layer, when crude oil passes through the first bed layer and the first auxiliary bed layer in sequence and then enters the second bed layer from the first feeding hole, and when crude oil passes through the second bed layer and the second auxiliary bed layer in sequence and then enters the third bed layer from the second feeding hole. The utility model further preferably adopts the scheme that the first bed layer, the second bed layer and the third bed layer are respectively provided with a bed upper thermometer and a bed lower thermometer. According to a further preferred