JP2003279509A - Measuring apparatus for gas-liquid equilibrium data - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a measuring apparatus for gas-liquid equilibrium data which is durable under a pressure condition from a vacuum up to 10 atm and at a high temperature and in which a measuring situation is observed from the outside. <P>SOLUTION: The apparatus used to efficiently measure the gas-liquid equilibrium data on a sample is constituted in such a way that a sample injection valve used to inject the sample is connected directly to a heater equipped with a heater assembly, that a nozzle extended upward is installed at the heater, that the nozzle is connected directly to an equilibrium chamber equipped with a temperature measuring device, that a liquid phase tube passing a liquid is installed at the equilibrium chamber so as to be directed downward, that a gas phase tube passing a gas is installed in a bent shape to the upper part of the equilibrium chamber, that the liquid phase tube is connected directly to the heater through a level meter, that the gas phase tube is connected directly to a condenser, and that at the condenser a pipe used to move the liquefied and condensed sample is connected directly to the heater through the level meter. An apparatus mainframe is composed of stainless steel, and a visible window by which the inside is visible from the outside and which are composed of a pressure-resistant glass are installed in the upper part of the level meter and in the lower part of the condenser. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for measuring vapor-liquid equilibrium data, and more specifically, it relates to a device for measuring a vacuum to 10
The present invention relates to a gas-liquid equilibrium measuring device capable of extremely efficiently measuring gas-liquid data under atmospheric pressure, reduced pressure, high pressure conditions, and high temperature while visually observing the measurement status.

[0002]

2. Description of the Related Art Conventionally, various measuring devices for gas-liquid equilibrium data have been proposed. However, when the material of the device main body is made of glass, for example, a high pressure condition of about 10 atm is measured. I could not give.

Now, gas-liquid equilibrium data is a fundamental physical property essential for the design and operation of a separation process, and accurate measurement of gas-liquid equilibrium data and azeotropic data is extremely important. In order to use
Not only constant pressure vapor-liquid equilibrium data under atmospheric pressure but also constant pressure vapor-liquid equilibrium data under high pressure conditions are indispensable.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of such problems, and an object of the present invention is to measure a gas-liquid equilibrium data from a vacuum to 10
The present invention provides a device for measuring gas-liquid equilibrium data, which is durable under pressure up to atmospheric pressure and under high temperature, and allows the measurement condition to be observed from the outside.

[0005]

The present invention has been made in view of the above object, and in a device for efficiently measuring gas-liquid equilibrium data of a sample, a sample injection valve for injecting the sample has a heater portion. Directly connected to a heater provided therein, the heater is provided with a nozzle extending upward, the nozzle is directly connected to an equilibrium chamber provided with a temperature measuring device, and a liquid-phase pipe through which a liquid passes is directed downward in the equilibrium chamber. A gas-phase tube through which a gas passes is provided in a bent shape above the equilibrium chamber, the liquid-phase tube is directly connected to the heater through a level meter, and the gas-phase tube is a condenser. The condenser unit is configured such that a tube through which the liquefied and condensed sample moves is directly connected to the heating container through the level meter, and the apparatus main body is made of stainless steel. Consists of
A visible window made of pressure-resistant glass is provided in the equilibrium chamber, the level measuring section, and the lower section of the condenser section so that the inside can be visually recognized from the outside (claim 1).

Further, in the gas-liquid equilibrium data measuring device described in claim 1, the surface of the heater part is blasted (claim 2).

Further, in the gas-liquid equilibrium data measuring device according to the first or second aspect, the inner diameter of the tip of the nozzle connected to the equilibrium chamber is made smaller than that of the other portions. (Claim 3).

Further, in the gas-liquid equilibrium data measuring device according to any one of claims 1 to 3, the inlet opening of the vapor phase pipe provided above the equilibrium chamber is formed in an inclined shape. (Claim 4).

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.

FIG. 1 is a plan sectional view showing an overall form of an embodiment of a gas-liquid equilibrium data measuring device according to the present invention.

Based on FIG. 1, according to the process of measuring data using the gas-liquid equilibrium data measuring device according to the present invention,
Each constituent element of the present invention will be described below.

First, by injecting the sample from the sample injection valve (1), the sample is sent to the heater (A).

The heater (A) is provided with a heater section (2), by which the sample is heated.

As described in claim 2, the surface of the heater portion (2) is subjected to blasting, that is, processing for forming innumerable fine irregularities (not shown), Increase the surface area of the heater part (2),
The heat transfer efficiency to the sample inside the heater (A) is improved.

Next, when the sample is heated inside the heater (A) and boiling occurs, the force of the boiling pushes the sample upward of the heater (A) in a mixed state of gas and liquid, and the nozzle (3) ), And moves to the equilibrium chamber (B).

The nozzle (3) refers to a tubular portion including the semi-elliptical portion formed on the upper part of the heater (A) shown in FIG. 1 and directly connected to the equilibrium chamber (B).

Further, as described in claim 3, the end portion of the nozzle (3) coupled to the equilibrium chamber (B) has a structure in which the inner diameter is made smaller than other portions of the nozzle. (See Figure 2).

With this structure, the gas pushed up,
The liquid can be mixed well, and the temperature measuring device (C) can be efficiently sprayed while maintaining the mixed state.

In the method of measuring temperature in the gas-liquid equilibrium data measuring device according to the present invention, the temperature is not fixed by directly contacting the temperature sensor with the sample to be sprayed, so the sample is placed in the temperature measuring device (C). This is done by spraying, raising the temperature of the temperature medium enclosed in the temperature measuring device (C), and measuring the temperature medium.

The equilibrium chamber (B) is provided with a visible window (G1) made of pressure resistant glass so that the inside can be visually recognized from the outside (see FIG. 5).

By providing such a visible window (G1), it is possible to observe the state in which the gas and the liquid are mixed and sprayed, and it is possible to check the mixed state of the gas and the liquid, and to optimize the measurement. It is possible to know various driving conditions.

Of the gas and liquid sprayed on the temperature measuring device (C), the gas moves to the gas phase pipe (4) and the liquid flows to the liquid phase pipe (5).

The vapor phase pipe (4) is provided upward from the equilibrium chamber (B), and the inlet opening (41) thereof is formed into an acutely inclined shape as described in claim 4. By forming (see FIG. 3), it becomes possible to prevent the liquid sample from entering the inside of the gas phase tube (4).

Further, by making the inner surface of the liquid phase tube (5) smooth, it becomes possible to prevent the liquid sample from staying in the flow path leading to the level meter (6).

The sample gas that has moved through the gas phase tube (4) is cooled inside the condenser (D) and condensed into a liquid. Then, the liquefied and condensed sample moves to the lower part of the condenser (D) through the pipe, and moves to the upper part of the level meter (6).

Below the condenser (D), there is a visible window (G) made of pressure resistant glass so that the inside can be visually recognized from the outside.
2) is provided (see FIG. 6).

By providing such a visible window (G2), it becomes possible to observe the state in which the condensed sample is dropped.

From the condenser (D) to the visible window (G
By forming the opening (71) at the end of the tube (7) to be connected to 2) with an acute angle (see FIG. 4), the condensed sample can efficiently form droplets.

On the upper part of the level meter (6), a visible window (G
3) is provided (see FIG. 7).

By providing such a visible window (G3), it is possible to observe the circulation of the liquid sample that has passed through the equilibrium chamber (B) and the gas sample that has condensed through the condenser (D).

By using a transparent pressure resistant glass at the center of the level meter (6), it is possible to visually recognize the liquid level position inside the heater (A) during operation.

The device body according to the present invention is made of stainless steel (S
US316).

Therefore, although the glass apparatus provided so far could not measure under a high pressure condition of about 10 atm, the apparatus for measuring gas-liquid equilibrium data according to the present invention was made of stainless steel. Since it is manufactured, it can be measured under high pressure conditions.

Further, in the gas-liquid equilibrium data measuring apparatus according to the present invention, visible windows made of pressure resistant glass are provided at various places and level meters are used to withstand pressure so that an important state for measurement can be visually recognized from the outside. It was decided to use a glass tube.

[0035]

Since the apparatus for measuring vapor-liquid equilibrium data according to the present invention is constructed as described in detail above, it has the following effects.

The present invention relates to a gas-liquid equilibrium measuring device capable of extremely efficiently measuring gas-liquid data under reduced pressure and high pressure conditions of from vacuum to 10 atmospheres and at high temperature because the apparatus main body is made of stainless steel.

Since a visible window made of pressure resistant glass is provided at each position of the main body of the apparatus, it is possible to observe by visually observing the measurement situation.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a device for measuring gas-liquid equilibrium data according to the present invention.

FIG. 2 is an enlarged view showing a tip portion of a nozzle connected to an equilibrium chamber in the gas-liquid equilibrium data measuring device according to the present invention.

FIG. 3 is an enlarged view showing an inlet opening of a vapor phase pipe provided upward from the equilibrium chamber in the apparatus for measuring vapor-liquid equilibrium data according to the present invention.

FIG. 4 is an enlarged view showing an opening at the end of a tube coupling from a condenser to a visible window in the apparatus for measuring gas-liquid equilibrium data according to the present invention.

FIG. 5 is an enlarged view showing a visible window provided in an equilibrium chamber in the gas-liquid equilibrium data measuring device according to the present invention.

FIG. 6 is an enlarged view showing a visible window provided below the condenser in the gas-liquid equilibrium data measuring apparatus according to the present invention.

FIG. 7 is an enlarged view showing a visible window provided in the level counting section in the gas-liquid equilibrium data measuring apparatus according to the present invention.

[Explanation of symbols]

1 Sample injection valve 2 heater part 3 nozzles 4 Gas phase tube 41 Gas phase tube opening 5 Liquid phase tube 6 level meter 7 tubes 71 Tube opening A heater B equilibrium chamber C temperature measuring instrument D capacitor G1 visible window G2 visible window G3 visible window

Claims (4)

[Claims] 1. An apparatus for efficiently measuring gas-liquid equilibrium data of a sample, wherein a sample injection valve for injecting the sample is directly connected to a heater having a heater part, and the heater is provided with a nozzle extending upward. The nozzle is directly connected to an equilibrium chamber equipped with a temperature measuring device, and a liquid-phase pipe through which a liquid passes is provided downward in the equilibrium chamber, and a gas-phase pipe through which a gas passes bends upward in the equilibrium chamber. The liquid phase tube is directly connected to the heater through a level meter, the gas phase tube is directly connected to the condenser part, and the condenser part is
A tube through which the liquefied and condensed sample moves is directly connected to the heating container through the level meter, the apparatus main body is made of stainless steel, and the equilibrium chamber and the level measuring method are provided. An apparatus for measuring gas-liquid equilibrium data, characterized in that a visible window made of pressure-resistant glass that allows the inside to be visually recognized from the outside is provided in the lower section and the lower section of the condenser section. 2. The apparatus for measuring gas-liquid equilibrium data according to claim 1, wherein the surface of the heater portion is blasted. 3. The inner diameter of the tip of the nozzle connected to the equilibrium chamber is made smaller than that of the other portion.
Alternatively, the device for measuring vapor-liquid equilibrium data according to claim 2. 4. The inlet opening of the vapor phase pipe provided upward from the equilibrium chamber is formed in an inclined shape.
The measuring apparatus for gas-liquid equilibrium data according to claim 3.