JPH05264419A - Sampler for flowing sample - Google Patents

Abstract

PURPOSE: To prevent an erroneous operation for opening a plurality of valves simultaneously by means of a wrench being engaged with the locking slot of the collar element of a plurality of valves in the sampler by an arrangement wherein the wrench can not be removed from the valve stem when the valve is opened but can be removed only when the valve is closed. CONSTITUTION: The flowing sample sampler applicable to a catalyst reaction system comprises a sample receiver 2, and an inlet valve 3 and an outlet valve 4 for conducting a fluid to the receiver. Each valve comprises a valve stem turnable about the longitudinal axis thereof to actuate each valve, and a collar element fixed thereto. The collar element has first and second end parts and includes a locking slot having a first part extending from the first end part and a second part substantially vertical to the first part. The collar element prevents a wrench 8 for operating the valve effectively from being removed from the valve stem when the valve is at the open position. Consequently, a reaction unit is not left to be discharged through the sampler.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow sampling device, and more particularly to a flow sampling device usable in a catalytic reaction system.

[0002]

Background of the Invention Various hydrocarbon conversion processes, such as reforming, hydrogenolysis, hydrogenation, hydrodesulfurization, etc., require a closed reaction vessel system, such as a pressure above atmospheric pressure and an elevated temperature. Utilizing the catalyst in a fixed bed reaction vessel operated below.

In the environment, the catalyst is subject to inhibition by metal contaminants, carbonaceous materials and other components of the feed to the reaction vessel such as sulfur and nitrogen. Accumulation of these substances on the catalyst particles reduces the activity of the catalyst and, in severe cases,
It may cause clogging of the catalyst layer. Therefore, the art has sought to determine both the extent and nature of the fouling of the catalyst so that regeneration of the catalyst can be effectively performed and the timing of the final pauses and replacement of the catalyst is also predictable.

In particular, the art has sought to obtain a catalyst sample from the reactor itself, which is maintained in flow. The sample collecting device is, for example, several hundred kg / cm ² (several thousands lb /
□ ″) must be effective in obtaining a sample that can be as hot as 1000 ° F. (537.7 ° C.) with a pressure of □ ″. Furthermore, the catalyst sample must be at risk of fire and / or injury to people. It must be obtained cheaply without.

Several devices for extracting a sample of catalyst are recognized in the art. An example is US Pat.
53.265, a differential pressure between the reaction vessel and the solid receiver is used to further discharge and cool the catalyst sample from the solid bed in the vessel to the tubular sampler. Transport the sample into the receiver. US Pat. No. 3,654,14
Another example disclosed in No. 3 uses a suction nozzle to suck the catalyst and reaction liquid from the reaction vessel.

US Pat. No. 3,792,612 relates to a catalyst sampling device in which a "safety interlock device" prevents simultaneous opening of both the inlet and outlet valves of the sampling device. In this system, the linkage or lock bar couples the inlet valve and the outlet valve, thus rotating both valves simultaneously when either of these valves is rotated. Therefore, by opening one of the inlet or outlet valves, the other valve is automatically closed.

Despite the ability of the device to prevent both valves from opening at the same time, the mechanical interlock device
It is plagued by various problems. For example, the device is complicated to operate, prone to snagging, and prone to wear with use. Furthermore, it is possible to deactivate the interlocking device, which clearly defeats its purpose.

Further, the technique uses a lock and key device in which the inlet valve and the outlet valve are fixed by a lock with a key that can use only one key. Therefore, in order to open the valve, the key must be inserted in the lock. When the valve is opened, the key is non-removable to ensure that only one valve can be opened at any one time. However, the device involves the use of a key that is easily (and often) lost with a lock that becomes clogged with dust, for example, and thus becomes unusable, especially in this environment.

Accordingly, there remains a need for a flow sampling device that can overcome these problems associated with prior art devices.

[0010]

SUMMARY OF THE INVENTION The present invention is directed to a flow sampling device capable of overcoming these problems discussed above. In particular, the flow sampling device according to the invention comprises a sample receiver, an inlet valve and an outlet valve, each of these valves being in fluid communication with the sample receiver,
It has a valve stem rotatable about its longitudinal axis to actuate each valve. In addition, the color elements are
It is fixed to the valve stem.

The collar element comprises a wall device having a first end and a second end and defining a longitudinal passage therethrough from the first end to the second end. .. Further, the wall device includes a locking slot having and limited to a first portion extending from the first end of the element and a second portion generally perpendicular to the first portion. In one preferred embodiment, the collar element is cylindrical while the locking slot is generally L-shaped.

The present invention will now be described in detail with reference to the accompanying drawings which relate to particular aspects of the present invention and are merely exemplary and should not be construed to limit the present invention.

[0013]

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flow sampling device that can be used, for example, to remove catalyst from a reaction vessel. Referring to the preferred embodiment shown in FIG. 1, the catalyst container 1 communicates with a sample receiver 2 via an inlet valve 3. The outlet valve 4 is coupled to the opposite end of the sample receiver 2.

The sample receiver of the present invention includes, for example, a stainless steel storage container, which is recognized in the art and therefore need not be described at length here. Further, valves usable in the present invention include any such valve which is operated by the valve stem and which can be fully opened or closed by rotation of the valve stem by less than 360 °, eg 90 °.

In one preferred environment, which involves extracting the catalyst from a closed reaction vessel, the Sark Oudco (Serv)
k Audco) and Rockwell (Rockwell)
A plug valve, such as the plug valve manufactured by l), is preferably used. A collar element is attached to each valve stem to prevent the wrench operating the valve from being removed from the valve when the valve is in the open position.

The collar element comprises a wall device having a longitudinal passage defined therethrough from the first end to the second end, the wall device further having a locking slot defined therein. ing.

The locking slot is shaped to allow the wrench to engage the valve stem and thus open the valve, but prevent the wrench from being removed without closing the valve. Preferably, the locking slot has a first portion extending from the first end of the collar element and a second portion generally perpendicular to the first portion.

In the preferred embodiment, the collar element is cylindrical with a generally L-shaped locking slot. Specific examples of these suitable color elements are shown in FIGS.
3 are preferably used in plug valves, such as those manufactured by Circo Ouduco, while FIG.
Color elements are preferably used in Rockwell plug valves.

The collar element may be attached to the valve slam by any device recognized in the art, such as a plurality of set screws as shown in FIGS. Furthermore, when used in certain valves, such as Rockwell plug valves,
An adapter element such as that shown in Figure 4 may be used to connect the collar element and the valve stem.

The material from which the color element is constructed depends on the particular environment in which the element is used. For example, in the preferred embodiment catalyst system, the collar element may be made of stainless steel.

In operation, a catalyst sample may be obtained as follows. During normal reactor operation, both the inlet and outlet valves remain closed. When a sample is desired, the valve in line 5, the reaction at least to the same pressure in the pressure vessel 1, preferably from 3.52 kg / cm ² to about 1.76 kg / cm ² than the reaction vessel outlet pressure at 7 (2
Open to pressurize the sample receiver 2 to a pressure as high as 5 lb / □ ″ to 50 lb / □ ″. After the sample receiver 2 is pressurized, the valve in line 5 is closed and then the inlet valve 3
Is opened by a wrench 8.

When the valve 3 is to be opened, the wrench is slid into the first part of the locking slot to engage the valve stem. When the wrench is turned to open the valve, it moves to the second part of the slot of the collar element and cannot be removed anymore from the valve stem.

Upon opening the inlet valve 3, the catalytic material with the reactants enters the sample receiver 2. The initial pressure in the sample receiver 2 is preferably at least the same as or higher than the outlet pressure of the reaction vessel to prevent premature extraction of the catalyst into the sample receiver. ..

Next, the inlet valve 3 is closed and the catalyst sample is
It is left to cool. The valve in line 6 is then opened to depressurize the sample receiver 2 and remove the reactants from the receiver 2. The valve in line 6 is then closed and the outlet valve 4 is opened using a wrench 8. The reaction vessel is never left to be extracted via the sampling device, since only one valve can be opened at any one time.

As mentioned above, the catalyst extracted in the sample receiver 2 should be allowed to cool before opening the outlet valve 4. Cooling of the catalyst sample is, for example, continuously (1)
Sample receiver by opening the valve of line 5 with all other valves in the closed state, (2) closing the valve of line 5 and (3) opening the discharge relief valve of line 6. It may be carried out by alternately pressurizing two.

In the present invention, a single wrench is used so that when the wrench is "locked" to one of the valves, the other valve cannot be opened. Further, since a single wrench operates both valves, the wrench may be attached to the system in a manner that prevents it from being easily lost. For example, as shown in FIG. 1, the wrench may be coupled to a support bracket attached to the sample receiver 2. The wrench that can be used to open and close the valve in the present invention is any known in the art and will be selected depending on the particular valve.

The sampling device is preferably used, for example, in the environment of a reforming reactor, but which includes high temperature steps and high pressure steps having steps that include materials that are sensitive to air or water and high pressure steps in the treatment medium. It may be used in any sampling operation involved in the collection of solids, liquids or gases from processing equipment where exposure to the atmosphere is harmful.

Furthermore, various modifications and variations of the device shown in the preferred embodiment can be implemented without departing from the scope of the invention. For example, the sampling device may be used without a pressure line and a discharge line, especially when low pressure is used in the reactor.

Although the present invention has been described in terms of various preferred embodiments, those skilled in the art will appreciate that various changes, substitutions, omissions and variations can be made without departing from the spirit of the invention. .. Therefore, the scope of the present invention is
It is intended to be limited only by the scope of the appended claims, including their equivalents.

[Brief description of drawings]

FIG. 1 is a diagram of a flow sampling device according to the present invention.

FIG. 2 is a diagram of an example of a color element used in the present invention.

FIG. 3 is a diagram of another embodiment of a color element.

FIG. 4 is a diagram of an adapter usable in connection with a Rockwell ball valve.

[Explanation of symbols]

 2 Sample receiver 3 Inlet valve 4 Outlet valve 8 Wrench

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Marcel Jay. Klaus Canada Buoy 5 C 1 X 4 British Columbia, Bernavi, N.N. Willington Drive 355 Notice

Claims (15)

[Claims] 1. A sample receiver and an inlet valve in fluid communication with the receiver, the valve having a valve stem rotatable about its longitudinal axis for actuating the inlet valve. And further comprising an outlet valve for communicating fluid with the receiver, the valve comprising:
A valve stem rotatable about its longitudinal axis for actuating the outlet valve, each having a first end and a second end fixed to one of the valve stems. Have 2
Comprising three collar elements, each collar element having a wall device defining a longitudinal passage therethrough from the first end to the second end, the wall device being limited thereto A flow sampling device that also has a locking slot, the locking slot having a first portion extending from a first end of the element and a second portion generally perpendicular to the first portion. 2. The sampling device according to claim 1, wherein the locking slot of the collar element is configured such that a wrench inserted through the first portion of the locking slot can rotate the valve stem, The wrench arranged against the fixed end of the valve stem of the element and used in this way is further removed from the slot without opening the respective valve after opening the respective valve. Impossible sampling device. 3. The sampling device according to claim 1, wherein the locking slot of the collar element is substantially L-shaped. 4. The sampling device of claim 1, wherein the wall device defines a generally cylindrical passage. 5. The sampling device according to claim 1, wherein the collar element is secured to the valve stem by at least one hole defined in the wall device near the second end of the element. Sampling device. 6. The sampling device according to claim 1, wherein the sample receiver is a granular solid storage container, the inlet valve is a granular solid inlet valve, and the outlet valve is a granular solid outlet valve. Is a sampling device. 7. The sampling device according to claim 6, further comprising a device for pressurizing and depressurizing the solid storage container. 8. The sampling device according to claim 6, wherein each of the valves is a plug valve. 9. The sampling device according to claim 1, wherein both the inlet valve and the outlet valve are fixed to the receiver. 10. The sampling device according to claim 1, further comprising an adapter coupled between the valve stem and the collar element. 11. The sampling device according to claim 1, further comprising a device for attaching a wrench capable of operating each valve to the receiver. 12. A valve stem for use with a wall device having a first end and a second end defining a longitudinal passage therethrough from the first end to the second end. In the collar element, the wall device has a locking slot limited thereto, the locking slot having a first portion extending from a first end of the element and a first portion substantially perpendicular to the first portion. Two
A locking part and further comprising a device for fixing the collar element to the valve stem, whereby a wrench inserted through the first part of the slot is able to rotate the valve stem, , A collar element such that the wrench thus used is not removable from the slot without closing the respective valve after opening the respective valve. 13. The collar element of claim 12, wherein the locking slot is generally L-shaped. 14. A collar element according to claim 12, wherein the wall device defines a generally cylindrical passage. 15. The collar element of claim 12, wherein the wall device further comprises at least two apertures near and limited to the second end of the element.