CN219574032U

CN219574032U - Caustic soda concentration on-line measuring device

Info

Publication number: CN219574032U
Application number: CN202320180409.0U
Authority: CN
Inventors: 刘国星; 张红玉; 李炳新; 王福华
Original assignee: Dezhou Shihua Chemical Co Ltd
Current assignee: Dezhou Shihua Chemical Co Ltd
Priority date: 2023-02-08
Filing date: 2023-02-08
Publication date: 2023-08-22
Anticipated expiration: 2033-02-08

Abstract

The utility model discloses an online measuring device for caustic soda concentration, which reduces the influence of caustic soda leakage corrosion on caustic soda concentration measurement, improves the accuracy of concentration measurement and avoids scalding, and has the following specific scheme: the on-line measuring device for caustic soda concentration comprises an ion membrane tank outlet, wherein a communicating pipe is arranged on the ion membrane tank outlet, and a mass flowmeter is connected to the communicating pipe through a flange.

Description

Caustic soda concentration on-line measuring device

Technical Field

The utility model relates to the technical field of measuring instruments, in particular to an online measuring device for caustic soda concentration.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

In the process of the ionic membrane electrolysis technology, caustic soda generated in an electrolysis cathode chamber flows out of an electrolytic tank, enters a caustic soda storage tank, is conveyed to a caustic soda finished product tank through a pump, and is generally measured by an online densitometer at the pump outlet to measure the caustic soda concentration index. The measuring generator is connected with the inlet and the outlet by screw threads, and the densimeter adopts the vibration principle, so that the caustic soda leakage corrosion vibration generating device is inaccurate in measurement due to long-time operation, and the caustic soda leakage has scalding risk.

Disclosure of Invention

Aiming at the defects existing in the prior art, the first aim of the utility model is to provide an online measuring device for caustic soda concentration, which reduces the influence of caustic soda leakage corrosion on caustic soda concentration measurement, improves the accuracy of concentration measurement and avoids scalding.

In order to achieve the above object, the present utility model is realized by the following technical scheme:

the on-line measuring device for caustic soda concentration comprises an ion membrane tank outlet, wherein a communicating pipe is arranged on the ion membrane tank outlet, and a mass flowmeter is connected to the communicating pipe through a flange.

Further, a rotameter is further arranged on the communicating pipe.

Further, the rotameter is disposed below the mass flowmeter.

Further, a manual stop valve is also arranged on the communicating pipe.

Further, the top end of the communicating pipe is arranged at the water outlet of the ion membrane tank.

Further, the manual stop valve is arranged between the water outlet of the ion membrane tank and the mass flowmeter.

Further, the bottom of the communicating pipe is arranged at the water inlet of the outlet of the ion membrane tank.

Further, the mass flowmeter is a configured mass flowmeter.

Further, the mass flowmeter is connected with a dcs system.

Further, the communicating pipe is in sealing connection with the outlet of the ion membrane tank.

The beneficial effects of the utility model are as follows:

1) According to the utility model, the flange connection mass flowmeter is used for replacing an online densimeter in the prior art, so that the influence of caustic soda leakage corrosion on caustic soda concentration measurement is reduced, the concentration measurement accuracy is improved, and scalding is avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

FIG. 1 is a schematic diagram of an on-line measuring device for caustic soda concentration according to one or more embodiments of the present utility model.

In the figure: the mutual spacing or dimensions are exaggerated for the purpose of showing the positions of the various parts, and the schematic illustration is only schematic.

Wherein: 1. the ionic membrane tank alkali liquor outlet 2, the communicating pipe 3, the manual stop valve 4, the rotameter 5 and the mass flowmeter.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

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 exemplary embodiments according to the present utility model. As used herein, the singular forms also are intended to include the plural forms unless the present utility model clearly dictates otherwise, and furthermore, it should be understood that when the terms "comprise" and/or "include" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

for convenience of description, the words "upper", "lower", "left" and "right" in the present utility model, if they mean only the directions of upper, lower, left and right in correspondence with the drawings themselves, are not limiting in structure, but merely serve to facilitate description of the present utility model and simplify description, rather than to indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Term interpretation section: the terms "mounted," "connected," "secured," and the like in the present utility model are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the terms are used herein as specific meanings as understood by those of ordinary skill in the art, and are not limited to the following terms.

Example 1

In a typical embodiment of the utility model, referring to fig. 1, an online measuring device for 32% caustic soda concentration comprises an alkali liquor outlet 1 of an ion membrane tank, wherein the alkali liquor outlet of the ion membrane tank is a caustic soda storage tank, a communicating pipe 2 is connected to the outlet of the ion membrane tank in a sealing manner, the top end of the communicating pipe is arranged at a water outlet of the ion membrane tank, the bottom end of the communicating pipe is arranged at a water inlet of the outlet of the ion membrane tank, and a mass flowmeter 5 is connected to a flange on the communicating pipe.

The mass flowmeter adopts thermal sensing measurement, and the flow is measured by the quantity of the molecular mass taken away by the split molecules, so that the measurement result is not influenced by the change of the gas temperature and the pressure, a vibration generating device is not arranged, the influence of caustic soda leakage corrosion on caustic soda concentration measurement is reduced, the concentration measurement accuracy is improved, and scalding is avoided.

The communicating pipe is also connected with a rotameter 4 in a rotary mode, and the rotameter is arranged below the mass flowmeter. The flow passing through the mass flowmeter is controlled through the rotameter, so that the caustic soda circulation is ensured, and the measurement is stable and reliable.

The communicating pipe is also provided with a manual stop valve which is arranged between the water outlet of the ion membrane tank and the mass flowmeter.

The mass flowmeter is a configuration mass flowmeter, and the mass flowmeter is connected with a dcs system (distributed control system). The corresponding concentration of 25 to 35 percent by weight is output by a configuration mass flowmeter (density: 1232 to 1335kg/m 3) and displayed in a DCS system.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The on-line measuring device for caustic soda concentration is characterized by comprising an ion membrane tank outlet, wherein a communicating pipe is arranged on the ion membrane tank outlet, and a mass flowmeter is connected to the communicating pipe through a flange.

2. The caustic soda concentration online measurement device according to claim 1, wherein a rotameter is further provided on the communicating pipe.

3. The caustic soda concentration online measurement apparatus according to claim 2, wherein the rotameter is disposed below the mass flowmeter.

4. The caustic soda concentration online measurement device according to claim 1, wherein a manual shut-off valve is further provided on the communicating pipe.

5. The online measuring device for caustic soda concentration according to claim 4, wherein the top end of the communicating pipe is arranged at the water outlet of the ion membrane tank.

6. The online measuring device for caustic soda concentration according to claim 4, wherein the manual stop valve is arranged between a water outlet of the ion membrane tank and the mass flowmeter.

7. The online measuring device for caustic soda concentration according to claim 4, wherein the bottom end of the communicating pipe is disposed at the water inlet of the outlet of the ion membrane tank.

8. The caustic soda concentration online measurement apparatus of claim 1, wherein the mass flowmeter is a configured mass flowmeter.

9. The caustic soda concentration online measurement apparatus of claim 1, wherein the mass flowmeter is coupled to a dcs system.

10. The online measuring device for caustic soda concentration according to claim 1, wherein the communicating pipe is hermetically connected with the outlet of the ion membrane tank.