CN213803577U

CN213803577U - Raw material pretreatment equipment for crude benzene hydrofining

Info

Publication number: CN213803577U
Application number: CN202022900244.9U
Authority: CN
Inventors: 王军亮; 杨华; 刘强; 苏发
Original assignee: Chongqing Zuoneng Chemical Co ltd
Current assignee: Chongqing Zuoneng Chemical Co ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-07-27
Anticipated expiration: 2030-12-03

Abstract

The utility model discloses raw material pretreatment equipment for crude benzene hydrofining, which comprises a feed inlet, wherein a pretreatment structure is arranged on the feed inlet; the pretreatment structure comprises: the system comprises a first three-way connector, two feeding connecting pipes, two first electromagnetic valves, two fractionating towers, two second electromagnetic valves, two electromagnetic flow meters, two light-out connecting pipes, a second three-way connector, a light-out pipe and a heavy benzene collecting part; first tee bend connector is installed in feed inlet one end, two the feeding connecting pipe is installed on first tee bend connector, the utility model relates to a crude benzene hydrofining equipment technical field sets up two fractionating tower parallel work, when one of them fractionating tower need be maintained, automatic suggestion staff need not operating personnel and regularly inspects, has reduced operating personnel's work load to need not to stop fractionation work, guaranteed production speed, improved production efficiency.

Description

Raw material pretreatment equipment for crude benzene hydrofining

Technical Field

The utility model relates to a crude benzol hydrofining equipment technical field specifically is a crude benzol hydrofining uses raw materials pretreatment equipment.

Background

The hydrogenation of crude benzene is to react with hydrogen under certain temperature and pressure conditions in the presence of special catalyst and pure hydrogen to saturate unsaturated compounds in light benzene, remove sulfur-containing compounds in light benzene, convert the sulfur-containing compounds into hydrogen sulfide gas, and then rectify hydrogenated oil to obtain high-purity benzene products. Obviously, the process has no pollutant and good product quality, is more and more favored by people and is a development direction in the future.

The conventional crude benzene hydrogenation production pretreatment line is generally provided with only one fractionating tower, does not have a fault warning function, needs to be periodically checked by an operator to prevent faults in working, has large workload of the operator, and needs to stop working when the fractionating tower needs to be maintained to influence the production speed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a crude benzene is raw materials pretreatment equipment for hydrofining has solved current crude benzene hydrogenation production pretreatment line and has only been equipped with a fractionating tower usually to do not have the trouble and warn the function, need operating personnel to regularly inspect, in case the during operation trouble, operating personnel work load is big, when needing to maintain the fractionating tower, needs stop work, influences the problem of production speed.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: raw material pretreatment equipment for hydrofining of crude benzene comprises a feed inlet, wherein a pretreatment structure is arranged on the feed inlet;

the pretreatment structure comprises: the system comprises a first three-way connector, two feeding connecting pipes, two first electromagnetic valves, two fractionating towers, two second electromagnetic valves, two electromagnetic flow meters, two light-out connecting pipes, a second three-way connector, a light-out pipe and a heavy benzene collecting part;

the first three-way connector is installed at one end of the feeding port, the two feeding connecting pipes are installed on the first three-way connector, the two first electromagnetic valves are installed at one end of the two feeding connecting pipes, the two fractionating towers are installed at one end of the two first electromagnetic valves, the two second electromagnetic valves are installed at two light outlets of the fractionating towers, the two electromagnetic flow meters are installed at two one ends of the second electromagnetic valves, the two light outlet connecting pipes are installed at one ends of the two electromagnetic flow meters, the second three-way connector is installed at one end of the two light outlet connecting pipes, the light outlet pipes are installed at one end of the second three-way connector, and the heavy benzene collecting portion is installed at two heavy outlets of the fractionating towers.

Preferably, the heavy benzene collecting part includes: two weight-discharging connecting pipes, a third three-way connecting port and a weight-discharging pipe;

the two weight-discharging connecting pipes are arranged on the weight-discharging ports of the two fractionating towers, the third three-way connecting port is arranged at one end of each of the two weight-discharging connecting pipes, and the weight-discharging pipe is arranged at one end of the third three-way connecting port.

Preferably, the lower ends of the two fractionating towers are respectively provided with a base.

Preferably, two first support rods are arranged on the base.

Preferably, alarms are arranged on the two fractionating towers.

Preferably, a second support rod is arranged between the two heavy connecting pipes and the two light connecting pipes.

Advantageous effects

The utility model provides a raw materials pre treatment device is used in crude benzene hydrofining possesses following beneficial effect: the two fractionating towers are arranged to work in parallel, when one fractionating tower needs to be maintained, the working personnel can be automatically prompted, the operation personnel is not needed to check regularly, the workload of the operation personnel is reduced, the fractionating work is not needed to stop, the production speed is guaranteed, and the production efficiency is improved.

Drawings

FIG. 1 is a schematic view of the raw material pretreatment apparatus for crude benzene hydrorefining according to the present invention.

FIG. 2 is a schematic view of the overlooking structure of a raw material pretreatment device for crude benzene hydrorefining according to the present invention.

FIG. 3 is a schematic view of a side view of a raw material pretreatment apparatus for hydrorefining crude benzene according to the present invention.

In the figure: 1-a feed inlet; 2-a first three-way connection port; 3-a feed connection pipe; 4-a first solenoid valve; 5-a fractionation column; 6-a second electromagnetic valve; 7-an electromagnetic flow meter; 8-a light-output connecting pipe; 9-a second three-way connection port; 10-discharging a light pipe; 11-a weight-out connecting pipe; 12-a third tee connection; 13-a heavy pipe; 14-a base; 15-a first support bar; 16-an alarm; 17-a second support bar.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a raw material pretreatment device for hydrofining of crude benzene.

Example (b): all the electrical components in the present application are connected with the power supply adapted to the electrical components through the wires, and an appropriate controller should be selected according to actual conditions to meet the control requirements, and specific connection and control sequences should be obtained.

Raw material pretreatment equipment for hydrofining of crude benzene comprises a feed inlet 1, wherein a pretreatment structure is arranged on the feed inlet 1;

wherein, it is required to be noted that: crude benzene enters a pretreatment structure from a feeding hole 1, and the pretreatment structure carries out fractionation work on the crude benzene;

in particular implementations, the pretreatment structure may preferably adopt the following structure, which includes: the system comprises a first three-way connector 2, two feeding connecting pipes 3, two first electromagnetic valves 4, two fractionating towers 5, two second electromagnetic valves 6, two electromagnetic flow meters 7, two light-out connecting pipes 8, a second three-way connector 9, a light-out pipe 10 and a heavy benzene collecting part; first three way connection 2 is installed in 1 one end of feed inlet, two feeding connecting pipes 3 are installed on first three way connection 2, two first solenoid valves 4 are installed in 3 one ends of two feeding connecting pipes, two fractionating tower 5 are installed in 4 one ends of two first solenoid valves, two second solenoid valves 6 are installed in 5 light outlets of two fractionating tower, two electromagnetic flowmeter 7 are installed in 6 one ends of two second solenoid valves, two light outlet connecting pipes 8 are installed in 7 one ends of two electromagnetic flowmeter, second three way connection 9 is installed in 8 one ends of two light outlet connecting pipes, light outlet pipe 10 is installed in 9 one end of second three way connection, heavy benzol collection portion is installed in 5 heavy outlets of two fractionating tower.

Wherein, it is required to be noted that: crude benzene enters two fractionating towers 5 through a first three-way connecting port 2, two feeding connecting pipes 3 and two first electromagnetic valves 4, the two fractionating towers 5 fractionate the crude benzene, light benzene enters two second electromagnetic valves 6, flows through two electromagnetic flow meters 7, two light outlet connecting pipes 8 and a second three-way connecting port 9, and flows into production equipment from a light outlet pipe 10, when one of the electromagnetic flow meters 7 detects that the flow rate of the light benzene is less than a set value, the fractionating tower 5 communicated with the light benzene breaks down, the electromagnetic flow meter 7 transmits a signal to a controller, the controller controls the first electromagnetic valve 4 and the second electromagnetic valve 6 at two ends of the broken fractionating tower 5 to be closed, preferably, furthermore, the two fractionating towers 5 are both provided with alarms 16, the electromagnetic flow meters 7 transmit the signal to the controller, and the controller controls the alarms 16 on the broken fractionating tower 5 to alarm, the suggestion staff maintains, the fractionating tower 5 to the trouble maintains, another fractionating tower 5 carries out the work of fractionating simultaneously, as preferred, and further, two fractionating tower 5 lower extremes all are equipped with base 14 for install fractionating tower 5, and as preferred, and further, be equipped with two first bracing pieces 15 on the base 14, a pipeline for supporting the lower extreme, and as preferred, and further, two play heavy connecting pipe 11 and two play all are equipped with second bracing piece 17 between the light connecting pipe 8, a mutual support for supporting the pipeline of below.

In a specific embodiment, the heavy benzene collecting part may preferably adopt the following structure, which includes: two weight-discharging connecting pipes 11, a third tee joint 12 and a weight-discharging pipe 13; two heavy connecting pipes 11 are arranged on heavy outlets of the two fractionating towers 5, a third tee joint 12 is arranged at one end of each heavy connecting pipe 11, and a heavy outlet pipe 13 is arranged at one end of the third tee joint 12.

Wherein, it is required to be noted that: the heavy benzene separated by fractionation flows into two heavy connecting pipes 11 and is discharged from a heavy pipe 13 through a third three-way connection 12.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Raw material pretreatment equipment for hydrofining of crude benzene comprises a feed inlet (1), and is characterized in that a pretreatment structure is arranged on the feed inlet (1);

the pretreatment structure comprises: the device comprises a first three-way connector (2), two feeding connecting pipes (3), two first electromagnetic valves (4), two fractionating towers (5), two second electromagnetic valves (6), two electromagnetic flow meters (7), two light-out connecting pipes (8), a second three-way connector (9), a light-out pipe (10) and a heavy benzene collecting part;

the first three-way connecting port (2) is arranged at one end of the feeding port (1), the two feeding connecting pipes (3) are arranged on the first three-way connecting port (2), the two first electromagnetic valves (4) are arranged at one ends of the two feeding connecting pipes (3), the two fractionating towers (5) are arranged at one ends of the two first electromagnetic valves (4), the two second electromagnetic valves (6) are arranged at light outlets of the two fractionating towers (5), the two electromagnetic flow meters (7) are arranged at one ends of the two second electromagnetic valves (6), the two light outlet connecting pipes (8) are arranged at one ends of the two electromagnetic flow meters (7), the second three-way connecting port (9) is arranged at one end of the two light-out connecting pipes (8), the light-out pipe (10) is arranged at one end of a second three-way connecting port (9), and the heavy benzene collecting part is arranged at the heavy-out ports of the two fractionating towers (5).

2. The apparatus according to claim 1, wherein the heavy benzene collecting section comprises: two weight-discharging connecting pipes (11), a third three-way connecting port (12) and a weight-discharging pipe (13);

the two weight-discharging connecting pipes (11) are arranged on the weight-discharging ports of the two fractionating towers (5), the third tee joint (12) port is arranged at one end of each of the two weight-discharging connecting pipes (11), and the weight-discharging pipe (13) is arranged at one end of the third tee joint (12) port.

3. The apparatus for pretreating a raw material for hydrorefining crude benzene according to claim 1, wherein bases (14) are provided at lower ends of both of said fractionation columns (5).

4. The apparatus for pretreating a raw material for hydrorefining crude benzene according to claim 3, wherein two first support rods (15) are provided on the base (14).

5. The apparatus for pretreating a raw material for hydrorefining crude benzene according to claim 1, wherein an alarm (16) is provided on each of the two fractionation towers (5).

6. The raw material pretreatment apparatus for hydrofining of crude benzene according to claim 2, characterized in that a second support rod (17) is provided between both of the two heavy outlet connection pipes (11) and both of the two light outlet connection pipes (8).