CN210065178U

CN210065178U - Concentrated nitric acid production device

Info

Publication number: CN210065178U
Application number: CN201920400050.7U
Authority: CN
Inventors: 龙尚云; 王博; 李岩; 陈宝玺; 鄢红玉; 郭家秀; 贾字田
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2019-03-27
Filing date: 2019-03-27
Publication date: 2020-02-14
Anticipated expiration: 2029-03-27

Abstract

The utility model provides a concentrated nitric acid apparatus for producing, including heater and comdenstion water expansion tank, the heater with connect through the connecting tube between the comdenstion water expansion tank, the corner of connecting tube is through integrated into one piece's elbow fitting connection. The utility model discloses a concentrated nitric acid apparatus for producing can prevent the production of leak source, has alleviated fundamentally and has erodeed and corrode the problem to reduce the frequency that the device overhauld, the long period operation of guarantee device has reduced the chemical plant and has frequently opened safety and environmental protection risk that the parking caused, improves the utility model provides a concentrated nitric acid apparatus for producing's life.

Description

Concentrated nitric acid production device

Technical Field

The utility model relates to a concentrated nitric acid production technical field particularly, relates to a concentrated nitric acid apparatus for producing.

Background

The joint between the steam condensate of the existing concentrated nitric acid heater and the pipeline elbow of the condensate water expansion tank is of a right-angle welding structure. The pressure of the steam condensate is 0.5MP, the temperature is 170 ℃, and the scouring and corrosion of the elbow of the pipeline are very serious under the working condition, so that the elbow often has a leakage point.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a concentrated nitric acid production device to solve the problem that the pipeline elbow of the concentrated nitric acid production device in the prior art is easy to produce leakage points.

In order to realize the above purpose, the utility model provides a concentrated nitric acid apparatus for producing, including heater and comdenstion water expansion tank, the heater with connect through the connecting tube between the comdenstion water expansion tank, the corner of connecting tube connects through integrated into one piece's elbow fitting.

Further, the elbow joint and the connecting pipeline are fixed together in a welding mode.

Further, the elbow joint is connected with the connecting pipeline through a flange.

Further, the elbow joint is arcuate.

Further, the elbow joint is arc-shaped.

Further, a control valve is arranged on the connecting pipeline.

Further, there is one said corner between said control valve and said heater.

Further, there are three said corners between said control valve and said condensate expansion tank.

Further, the elbow joint is integrally formed through injection molding.

Use the technical scheme of the utility model, because the utility model provides a corner of connecting tube is through integrated into one piece's elbow fitting connection, for adopting right angle welded structure in the past, the utility model discloses in adopt integrated into one piece's elbow fitting and connecting tube to connect and replace right angle inflection point in the past for the skew connecting tube of the hookup location of elbow fitting and connecting tube receives erode and corrodes the most serious right angle inflection point department, can prevent the production of leak source, has alleviated fundamentally and has erodeed and corrode the problem, thereby reduce the frequency that the device overhauld, the long period operation of guarantee device has reduced the chemical plant and has frequently opened the safety and the environmental protection risk that the parking caused, improves the utility model provides a life of concentrated nitric acid apparatus for producing.

Drawings

The accompanying drawings, which form a part of the present application, 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 serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 schematically shows a front view of a concentrated nitric acid production plant of the present invention; and

fig. 2 schematically shows an enlarged view of the connecting duct of the invention at a corner position.

Wherein the figures include the following reference numerals:

10. a heater; 20. a condensate expansion tank; 30. connecting a pipeline; 31. a corner; 40. a control valve; 50. an elbow fitting.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Referring to fig. 1 and 2, according to an embodiment of the present invention, there is provided a concentrated nitric acid production apparatus, which includes a heater 10 and a condensate expansion tank 20, wherein the heater 10 and the condensate expansion tank 20 are connected by a connecting pipe 30, and a corner 31 of the connecting pipe 30 is connected by an integrally formed elbow joint 50.

Because the corner 31 of the connecting pipeline 30 in the embodiment is connected through the elbow joint 50 which is integrally formed, compared with the structure which adopts right-angle welding in the past, the elbow joint 50 which is integrally formed is connected with the connecting pipeline 30 in the embodiment to replace the past right-angle inflection point, so that the connecting position of the elbow joint 50 and the connecting pipeline 30 deviates from the right-angle inflection point where the connecting pipeline 30 is most seriously eroded and corroded, the generation of a leakage point can be prevented, the erosion and corrosion problems are fundamentally relieved, the frequency of overhauling the device is reduced, the long-period operation of the device is ensured, the safety and environmental protection risks caused by frequent starting and stopping of a chemical device are reduced, and the service life of the concentrated nitric acid production device in the embodiment is prolonged.

In a preferred embodiment of the present invention, the elbow joint 50 and the connecting pipe 30 are fixed together by welding. Of course, in other embodiments of the present invention, the elbow joint 50 and the connecting pipe 30 may be connected by a flange. Any other deformation modes under the concept of the present invention are within the protection scope of the present invention.

Referring to fig. 2, the elbow joint 50 in this embodiment has an arc shape, preferably an arc shape, which can effectively improve the service life of the concentrated nitric acid production apparatus in this embodiment.

In order to facilitate the control of the flow rate of the fluid between the heater 10 and the condensate expansion tank 20, the control valve 40 is provided on the connection pipe 30 in the present embodiment, which is simple in structure and easy to implement.

Referring again to fig. 1 and 2, the control valve 40 in this embodiment has a corner 31 between it and the heater 10. There are three corners 31 between the control valve 40 and the condensate expansion tank 20. Of course, in other embodiments of the present invention, the control valve 40 and the heater 10 may further have two or more corners 31, and the control valve 40 and the condensate expansion tank 20 may also have only one or two or more corners 31, as long as they are in other deformation manners under the concept of the present invention, which are all within the protection scope of the present invention.

In practice, the elbow connector 50 is integrally formed by injection molding.

It can be seen that, the utility model discloses with connecting tube 30's the whole more changes of right angle flex point for convex elbow fitting 50, it is normal that the device operation is accomplished in the maintenance, can effectively prevent the earial drainage occurence of failure.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the utility model discloses with connecting tube 30's right angle flex point whole more for convex elbow fitting 50, alleviated fundamentally and erodeed and the corrosion problem to reduce the frequency that the device overhauld, the long period operation of guarantee device has reduced the chemical industry device and has frequently opened safety and environmental protection risk that the parking caused.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The device for producing the concentrated nitric acid is characterized by comprising a heater (10) and a condensate water expansion tank (20), wherein the heater (10) is connected with the condensate water expansion tank (20) through a connecting pipeline (30), and corners (31) of the connecting pipeline (30) are connected through integrally-formed elbow joints (50).

2. A concentrated nitric acid production plant according to claim 1, wherein the elbow joint (50) and the connecting pipe (30) are fixed together by welding.

3. A concentrated nitric acid production plant according to claim 1, wherein the elbow joint (50) is flanged to the connecting pipe (30).

4. A concentrated nitric acid production plant according to claim 1, wherein the elbow joint (50) is curved.

5. A concentrated nitric acid production plant according to claim 4, wherein the elbow joint (50) is circular arc shaped.

6. A concentrated nitric acid production plant according to claim 1, characterized in that the connecting pipe (30) is provided with a control valve (40).

7. A concentrated nitric acid production plant according to claim 6, wherein there is one said corner (31) between the control valve (40) and the heater (10).

8. A concentrated nitric acid production plant according to claim 6, characterized in that there are three said corners (31) between the control valve (40) and the condensed water expansion tank (20).

9. A concentrated nitric acid production plant according to any of claims 1 to 8, wherein the elbow joint (50) is integrally formed by injection moulding.