CN209459781U

CN209459781U - A kind of device of real-time monitoring hydrocracking reactor Wall Temperature

Info

Publication number: CN209459781U
Application number: CN201920301593.3U
Authority: CN
Inventors: 毛征江; 何顺德
Original assignee: Ningbo Zhongjin Petrochemical Co Ltd
Current assignee: Ningbo Zhongjin Petrochemical Co Ltd
Priority date: 2019-03-11
Filing date: 2019-03-11
Publication date: 2019-10-01
Anticipated expiration: 2029-03-11

Abstract

Disclosed by the utility model is a kind of device of real-time monitoring hydrocracking reactor Wall Temperature, including No.1 reactor, No. two reactors, No. three reactors, 14 thermocouples are provided in the wall layer of No.1 reactor from top to bottom, 12 thermocouples are provided in the wall floor of No. two reactors from top to bottom, 10 thermocouples are provided in the wall floor of No. three reactors from top to bottom, the thermocouple passes through cable and is connected with collector, the collector communication link is connected to DCS station, operator precisely can quickly judge the Wall Temperature of reactor, convenient for boost operations, it is possible to prevente effectively from the tempering embrittlement of reactor；The skill requirement for reducing operation, reduces cost, easy to control；Of simple structure and strong practicability.

Description

A kind of device of real-time monitoring hydrocracking reactor Wall Temperature

Technical field

The utility model relates to a kind of devices of real-time monitoring temperature, more specifically say, are related to a kind of real-time monitoring and add The device of hydrogen cracker Wall Temperature, belongs to petrochemical industry production field.

Background technique

Hydrocracking process is under conditions of high temperature and pressure, using media such as catalyst, hydrogen by heavy wax oil, diesel oil Equal crackings are the process of light naphtha, reaction pressure generally in 13.0-15.0MPa, reaction temperature generally at 370-420 DEG C, And it is in high hydrogen, high hydrogen sulfide environment in reactor, therefore the material of reactor is required very high.With equipment system The development of technology and new material technology is made, hydrocracking reactor generallys use chrome-moly steel at present, and characteristic determines cold Reaction pressure is not greater than the one third of design operation pressure under the conditions of state, it is generally recognized that 93 DEG C are cold conditions and hot critical Temperature, therefore in start-up process, wall of reactor temperature is the minimum point of entire temperature of reactor, only all Wall Temperatures It could continue the one third that boosting makes pressure be higher than design operation pressure after 93 DEG C of >, until design pressure.

Traditional hydrocracking unit is general to be only arranged thermocouple in inside reactor, but internal temperature cannot be intuitive The Wall Temperature of reactor is embodied, and general hydrocracking reactor wall thickness > 200mm, wall thickness mean that greatly amount of stored heat Greatly, therefore the temperature difference of internal temperature and Wall Temperature is just very big, therefore operator is difficult to judge the Wall Temperature of reactor on earth It is how many, when operation, lacks reliable foundation, when anxious boosting goes into operation temperature not up to standard, the tempering for the device that will react Embrittlement.

Utility model content

In order to solve above-mentioned prior art problem, the utility model, which provides to have, can help operator's real-time and precise to monitor Wall of reactor temperature, so that reasonably control Wall Temperature prevents reactor from a kind of reality for being tempered the technical characterstics such as embrittlement occurs When monitor hydrocracking reactor Wall Temperature device.

To achieve the goals above, the utility model is achieved through the following technical solutions:

A kind of device of real-time monitoring hydrocracking reactor Wall Temperature, including No.1 reactor, No. two reactors, three Number reactor, is provided with 14 thermocouples in the wall layer of No.1 reactor from top to bottom, from top to bottom the device of No. two reactors It is provided with 12 thermocouples in parietal layer, is provided with 10 thermocouples, the thermoelectricity in the wall floor of No. three reactors from top to bottom Even to be connected with collector by cable, the collector communication link is connected to DCS station.

As an improvement the wall layer of the No.1 reactor is uniformly divided into 7 sections from top to bottom, each section of wall layer South and north is to being respectively arranged with a thermocouple；The wall floor of No. two reactors is uniformly divided into 6 sections from top to bottom, each The south and north of section wall layer is to being respectively arranged with a thermocouple；The wall floor of No. three reactors uniformly divides from top to bottom At 5 sections, the south and north of each section of wall layer is to being respectively arranged with a thermocouple.

As an improvement the thermocouple is magnetic-type surface thermocouple, and thermocouple detection temperature is 0-3000 DEG C.

As an improvement the collector is externally provided with instrument slot box.

As an improvement No.1 reactor, No. two reactors, No. three reactors are in that North and South direction is horizontally disposed.

The utility model has the advantages that operator precisely can quickly judge the Wall Temperature of reactor, it is convenient for boost operations, it can be effective Avoid the tempering embrittlement of reactor；The skill requirement for reducing operation, reduces cost, easy to control；Of simple structure and strong practicability.

Detailed description of the invention

Fig. 1 is either segment thermocouple distribution schematic diagram in No.1 reactor.

Fig. 2 is either segment thermocouple distribution schematic diagram in No. two reactors.

Fig. 3 is either segment thermocouple distribution schematic diagram in No. three reactors.

Specific embodiment

Below in conjunction with Figure of description, the utility model is described in further detail, but the utility model be not limited to Lower embodiment.

It is as shown in Figs. 1-3 a kind of specific embodiment of the device of real-time monitoring hydrocracking reactor Wall Temperature, one The device of kind real-time monitoring hydrocracking reactor Wall Temperature, including the reactor of reactor 2, three of No.1 reactor 1, two 3,14 thermocouples are provided in the wall layer of No.1 reactor 1 from top to bottom, from top to bottom in the wall floor of No. two reactors 2 12 thermocouples are provided with, are provided with 10 thermocouples in the wall floor of No. three reactors 3 from top to bottom, the thermocouple is logical It crosses cable and is connected with collector 4,4 communication link of collector is connected to DCS station；

Increase thermoelectricity in the wall insulating layer of the No.1 reactor being hydrocracked 1, No. two reactor, 2, No. three reactors 3 It is even, 14,12,10 are respectively set in the wall floor of 1, No. two reactor of No.1 reactor, 2, No. three reactors 3 from top to bottom A thermocouple, the detection temperature inversion of thermocouple are to be acquired by collector 4 and sent back middle control DCS station in real time after signal, It can be very good to help in the Wall Temperature at every hydrocracking reactor of DCS real-time display each position from top to bottom Operator monitors wall of reactor temperature, so that reasonably control Wall Temperature prevents reactor from tempering embrittlement occurs.

As an improvement embodiment, the wall layer of the No.1 reactor 1 is uniformly divided into 7 sections from top to bottom, each To a thermocouple is respectively arranged with, i.e. No.1 reactor 1 has been evenly arranged 14 thermocouples for the south and north of section wall layer；From The wall floor of upper and lower No. two reactors 2 is uniformly divided into 6 sections, and the south and north of each section of wall layer is to being respectively arranged with one A thermocouple, i.e. No. two reactors 2 have been evenly arranged 12 thermocouples；The wall floor of No. three reactors 3 is equal from top to bottom Even to be divided into 5 sections, to a thermocouple is respectively arranged with, i.e. No. three reactors 3 are evenly arranged for the south and north of each section of wall layer 12 thermocouples, thermocouple are connect by cable with collector 4, and the temperature that will test is transmitted in meeting by collector to be controlled DCS station, finally shows Wall Temperature in operation interface, grasps wall of reactor temperature convenient for operator, reasonably adjusts anti- Device temperature is answered, prevents to be tempered embrittlement.

As an improvement embodiment, the thermocouple be magnetic-type surface thermocouple, thermocouple detect temperature be 0- 3000 DEG C, it is easily installed arrangement, is convenient for temperature monitoring.

As an improvement embodiment, the collector 4 is externally provided with instrument slot box, and instrument slot box has collector 4 There is protective effect.

As an improvement embodiment, the reactor 2, three of No.1 reactor 1, two reactor 3 be in North and South direction It is horizontally disposed.

Finally it should be noted that the utility model is not limited to above embodiments, there can also be many variations.This field The those of ordinary skill's all deformations that directly can export or associate from content disclosed by the utility model, be considered as The protection scope of the utility model.

Claims

1. a kind of device of real-time monitoring hydrocracking reactor Wall Temperature, it is characterised in that: including No.1 reactor, No. two Reactor, No. three reactors are provided with 14 thermocouples in the wall layer of No.1 reactor from top to bottom, from top to bottom No. two it is anti- It answers and is provided with 12 thermocouples in the wall layer of device, be provided with 10 thermocouples in the wall floor of No. three reactors from top to bottom, The thermocouple passes through cable and is connected with collector, and the collector communication link is connected to DCS station.

2. a kind of device of real-time monitoring hydrocracking reactor Wall Temperature according to claim 1, it is characterised in that: The wall layer of the No.1 reactor is uniformly divided into 7 sections from top to bottom, and the south and north of each section of wall layer is to being respectively arranged with one A thermocouple；The wall floor of No. two reactors is uniformly divided into 6 sections from top to bottom, the south and north of each section of wall layer to point It is not provided with a thermocouple；The wall floor of No. three reactors is uniformly divided into 5 sections from top to bottom, each section of wall layer South and north is to being respectively arranged with a thermocouple.

3. a kind of device of real-time monitoring hydrocracking reactor Wall Temperature according to claim 1 or 2, feature exist In: the thermocouple is magnetic-type surface thermocouple, and thermocouple detection temperature is 0-3000 DEG C.

4. a kind of device of real-time monitoring hydrocracking reactor Wall Temperature according to claim 1 or 2, feature exist In: the collector is externally provided with instrument slot box.

5. a kind of device of real-time monitoring hydrocracking reactor Wall Temperature according to claim 1, it is characterised in that: No.1 reactor, No. two reactors, No. three reactors are in that North and South direction is horizontally disposed.