CN211562887U

CN211562887U - Device for continuously gasifying o-chlorotoluene and liquid ammonia in proportion

Info

Publication number: CN211562887U
Application number: CN201922267893.7U
Authority: CN
Inventors: 刘金军; 闫庆余; 陈泽海
Original assignee: Hebei Jiatai Chemical Technology Co ltd
Current assignee: Hebei Jiatai Chemical Technology Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-09-25
Anticipated expiration: 2029-12-17

Abstract

The utility model discloses a continuous proportional gasification device of ortho-chlorotoluene and liquid ammonia, which comprises an E101 gasifier and an E102 heater, the utility model is additionally provided with a novel gasifier and a novel heater on the basis of the prior equipment, in the working process of the utility model, saturated steam firstly enters the tube side of the gasifier of the device, condensed water is discharged through a steam trap, then the gasification of the liquid ammonia and the ortho-chlorotoluene can be completed through the shell side of the gasifier and one flow of steam heating, the steam heat is fully utilized, through the utility model, the ortho-chlorotoluene and the ammonia are mixed, the complete gasification temperature is 126 ℃, the gasification point is reduced by 57 ℃, the low-pressure saturated steam can be used for completely realizing the complete gasification of two materials, compared with the traditional method, the heat can be saved by 30% -50%, a gas outlet valve and a steam regulating valve are mixed, the steam flow is adjusted by self control, the complete gasification of the o-chlorotoluene entering the gasifier is ensured, so that the proportion of the o-chlorotoluene and the ammonia in the material mixed gas is ensured.

Description

Device for continuously gasifying o-chlorotoluene and liquid ammonia in proportion

Technical Field

The utility model belongs to the technical field of the chemical production equipment is relevant, concretely relates to continuous proportional gasification's of ortho-chloro toluene and liquid ammonia device.

Background

In the prior enterprises for producing o-chlorobenzonitrile by an ammoxidation method in China, the production process completely comprises the steps of firstly gasifying o-chlorotoluene and gasifying liquid ammonia, respectively entering hot air pipelines, then jointly entering a fluidized bed, and carrying out fluidized reaction at 400-450 ℃ under the condition of a catalyst to produce the o-chlorobenzonitrile.

The prior device technology for continuously gasifying o-chlorotoluene and liquid ammonia has the following problems: because the complete gasification temperature of the o-chlorotoluene under the pressure of 0.08MPa is 183 ℃, low-pressure steam heating can not be realized, a heat-conducting oil furnace needs to be invested or high-pressure steam is adopted, the occupied area is large due to the problem of safety distance, the investment cost is high, meanwhile, the vaporization of the liquid ammonia is heated by hot water, two heat sources are adopted for the vaporization of the o-chlorotoluene, the operation is inconvenient, and the pipeline is complex.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a device of continuous proportion gasification of ortho-chloro toluene and liquid ammonia to solve the big and complicated problem of operation of area that provides in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the device for continuously gasifying the o-chlorotoluene and the liquid ammonia in proportion comprises an E101 gasifier and an E102 heater, wherein the E101 gasifier and the E102 heater are fixedly connected together through a DCS controlled tube pass.

Preferably, a tube pass controlled by FVE101 and FQICSE101 is connected to the left position in the middle of the top of the E101 gasifier, a tube pass controlled by TIE101 and FQICSE103 is arranged in the middle of the top of the E101 gasifier, and a tube pass controlled by TVE104 is arranged on the left shell pass of the E101 gasifier.

Preferably, the top of the E102 heater is provided with a tube pass controlled by the FVE102 and the FQICSE102 at a position which is deviated from the left part in the middle.

Preferably, the FVE101, FQICSE101, TIE101, FVE102, FQICSE103 and TVE104 on the tube side connecting the E101 vaporizer and the E102 heater are all controlled by the same DCS system model.

Preferably, the middle of the top of the E101 gasifier is provided with a tube pass connected with an explosion venting tank.

Preferably, the E101 gasifier is connected to the fluidized bed reactor via a tube side controlled by TIE101 and FQICSE 103.

Preferably, a tube pass is arranged at the position, close to the right side, in the middle of the top of the E101 gasifier and connected with the E102 heater.

Preferably, a tube pass for discharging condensed water is arranged at the position of the middle right of the bottom of the E102 heater.

Compared with the prior art, the utility model provides a continuous ratio gasification's of ortho-chloro toluene and liquid ammonia device possesses following beneficial effect: the utility model is additionally provided with a novel gasifier and a heater on the basis of the prior equipment, in the working process of the utility model, saturated steam firstly enters the tube pass of the gasifier of the device, condensed water is discharged through a steam trap, then the condensed water passes through the shell pass of the gasifier, the gasification of liquid ammonia and ortho-chlorotoluene can be completed through one flow of steam heating, the steam heat is fully utilized, the ortho-chlorotoluene and gas ammonia are mixed by the utility model (ortho-chlorotoluene: gas ammonia is 2.15:1), the complete gasification temperature is 126 ℃, the gasification point is reduced by 57 ℃, the complete gasification of two materials can be completely realized by using low-pressure saturated steam, compared with the traditional method, the heat can be saved by 30-50 percent, the mixed gas outlet valve is interlocked with a steam regulating valve, the steam flow is automatically controlled and adjusted, the complete gasification of the ortho-chlorotoluene entering the gasifier is ensured, thereby the proportion of the ortho-chlorotoluene and the ammonia in the material mixed gas is, effectual improvement the utility model discloses a job stabilization nature.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

FIG. 1 is a schematic structural view of a device for continuously gasifying ortho-chlorotoluene and liquid ammonia in proportion, which is provided by the utility model;

FIG. 2 is a schematic view of a gasifier according to the present invention;

fig. 3 is a schematic structural view of a heater according to the present invention;

in the figure: 1. e101, an evaporator; 2. e102 heater.

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 device for continuously gasifying ortho-chlorotoluene and liquid ammonia in proportion comprises an E101 gasifier 1 and an E102 heater 2, wherein the E101 gasifier 1 and the E102 heater 2 are fixedly connected through a DCS controlled tube pass, the left position in the middle of the top of the E101 gasifier 1 is connected with a FVE101 controlled tube pass and a FQICSE101 controlled tube pass, the middle of the top of the E101 gasifier 1 is provided with a TIE101 controlled tube pass and a FQICSE103 controlled tube pass, the E101 gasifier 1 is connected with a fluidized bed reactor through the TIE101 controlled tube pass and a FQICSE103 controlled tube pass, stable gas supply work of the fluidized bed reactor can be effectively realized by adopting the device, the left shell pass of the E101 gasifier 1 is provided with a TVE104 controlled tube pass, the device is convenient for a user to carry out unified control through a DCS system, the FVE101, the FQIE 101, the TIE101, the FCSE 102, the FCSE 103 and the TVE104 connected tube pass, and the E101 and the E102 heater 2 are all conveniently controlled by the same DCS system, the operation difficulty is reduced, a tube pass connected with an explosion venting tank is arranged in the middle of the top of the E101 gasifier 1, a tube pass connected with the E102 heater 2 is arranged at the position, on the right side, in the middle of the top of the E101 gasifier 1, the arrangement is adopted, steam in the E101 gasifier 1 can be conveniently circulated back into the E102 heater 2, the energy-saving effect is achieved, a tube pass controlled by FVE102 and FQICSE102 is arranged at the position, on the left side, in the middle of the top of the E102 heater 2, the arrangement is adopted, the stable addition of the o-chlorotoluene is convenient, a tube pass used for discharging condensed water is arranged at the position, on the right side, in the middle of the bottom of the E102 heater 2, and the arrangement is adopted, so that the condensed water.

The utility model discloses a theory of operation and use flow: after the utility model is installed, a user firstly checks whether the external appearance of the utility model is intact, confirms that the utility model is in a normal working state, then the user moves the utility model to a position where the utility model is needed to be used, then the user connects the control valve and other devices connected on the utility model with DCS equipment, then the utility model is controlled by the DCS equipment, firstly, the low-pressure steam of 0.6MPa is supplied into the E102 heater 2 by the centralized gas supply through the control of the central control room, meanwhile, the liquid ammonia of 1.6MPa is supplied into the E102 heater 2 by the tank area, then the adjacent chlorotoluene is supplied into the E101 gasifier 1 by the tank area, then the mixed gas outlet temperature interlocking control of the opening device of the user is set to 140 and 150 ℃, the mixed gas outlet flow interlocking control of the opening device is set to 355kg/h flow, the liquid ammonia pipeline interlocking control of the opening device is set, the flow rate is set to be 115kg/h, the device is opened to be in linkage control with an adjacent chlorotoluene pipeline, the flow rate is set to be 240kg/h, the TIE104 linkage TV104 controls the steam flow rate, the FQICSE102 linkage liquid FVE102 controls the liquid ammonia feeding rate, the FQICSE101 linkage FVE101 controls the adjacent chlorotoluene feeding rate, the FQICSE103 linkage FVE103 controls the adjacent chloro and ammonia mixed gas discharging rate, and the DCS linkage control is adopted to realize the utility model to continuously convey proportionally gasified adjacent chlorotoluene and ammonia to the fluidized bed reactor, thereby ensuring the subsequent process production, in the working process of the utility model, saturated steam firstly enters the tube pass condensed water of the E101 gasifier 1 of the device, is discharged through a steam trap, then passes through the shell pass of the E101 gasifier 1, the gasification of the liquid ammonia and the adjacent chlorotoluene can be completed through one flow of steam heating, the steam heat is fully utilized, and the adjacent chlorotoluene and the gas are mixed (the adjacent chlorotoluene: ammonia is 2.15:1), the complete gasification temperature is 126 ℃, the gasification point is reduced by 57 ℃, the complete gasification of the two materials can be realized by using low-pressure saturated steam, and compared with the traditional method, the heat can be saved by 30-50%, the mixing gas outlet valve is interlocked with the steam regulating valve, the steam flow is regulated in an automatic control manner, the complete gasification of the o-chlorotoluene entering the E101 gasifier 1 is ensured, and the proportion of the o-chlorotoluene and ammonia in the material mixed gas is ensured.

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. An apparatus for continuously proportionally gasifying o-chlorotoluene and liquid ammonia, which comprises an E101 gasifier (1) and an E102 heater (2), and is characterized in that: e101 vaporizer (1) and E102 heater (2) pass through the tube side connection of DCS control and fix together, the top middle off-left position department of E101 vaporizer (1) is connected with the tube side of FVE101 and FQICSE101 control, be provided with the tube side of TIE101 and FQICSE103 control in the middle of the top of E101 vaporizer (1), be provided with the tube side of TVE104 control on E101 vaporizer (1) left side shell side, the top middle off-left position department of E102 heater (2) is provided with the tube side of FVE102 and FQICSE102 control.

2. The device for continuously proportionally gasifying o-chlorotoluene and liquid ammonia according to claim 1, wherein: the device is characterized in that the FVE101, the FQICSE101, the TIE101, the FVE102, the FQICSE103 and the TVE104 which are arranged on the tube side connected with the E101 gasifier (1) and the E102 heater (2) are controlled by the same DCS system model.

3. The device for continuously proportionally gasifying o-chlorotoluene and liquid ammonia according to claim 1, wherein: the middle of the top of the E101 gasifier (1) is provided with a tube pass connected with an explosion venting tank.

4. The device for continuously proportionally gasifying o-chlorotoluene and liquid ammonia according to claim 1, wherein: the E101 gasifier (1) is connected with the fluidized bed reactor through a tube pass controlled by TIE101 and FQICSE 103.

5. The device for continuously proportionally gasifying o-chlorotoluene and liquid ammonia according to claim 1, wherein: and a pipe pass is arranged at the position of the middle part of the top of the E101 gasifier (1) which is close to the right side and is connected with the E102 heater (2).

6. The device for continuously proportionally gasifying o-chlorotoluene and liquid ammonia according to claim 1, wherein: a pipe pass for discharging condensed water is arranged at the position, which is deviated from the right position, in the middle of the bottom of the E102 heater (2).