JP2003265946A - Heat exchange vessel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a heat exchange vessel in which the whole object to be heat-exchanged can be heat-exchanged efficiently even when the amount of the object to be heat-exchanged is small. <P>SOLUTION: A vertically long reaction vessel 1 whose diameter is made smaller gradually to ward the bottom of the vessel is arranged. A jacket part 2 is arranged almost on the whole surface of the outer periphery of the vessel 1. A steam supplying pipe 3 for heating the vessel 1 and a cooling fluid supplying pipe 20 for cooling the vessel 1 are connected to the upper part of the part 2. An ejector 6 is connected to the lower part of the part 2. The ejector 6 is connected to a circulation pump 11 while a tank 10 is interposed between them. The whole object to be heat-exchanged can be heat-exchanged efficiently even when the amount of the object which is to be heat-exchanged and fed to the vessel 1 is small because the volume of the lower part of the vessel 1 is so small that the prescribed height can be kept and the large heat transfer area can be secured. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reaction vessel, a treatment tank, and the like for heat treatment used in petroleum / chemical plants, foods, pharmaceuticals, and various other factories. And a heat exchange container suitable for heat-treating a small-capacity heat exchange target. 2. Description of the Related Art As a conventional heat exchange vessel, for example, the one disclosed in Japanese Utility Model Laid-Open Publication No. 4-87736 has been used. This is to provide a glass lining layer having a different thermal conductivity on the inner periphery of the reactor to prevent uneven heating of the reactant inside the reactor. [0003] In the conventional heat exchange container described above, there is a problem that when the amount of the reactant contained in the kettle is small, the entire reactant cannot be efficiently heat-exchanged. When the amount of the reactant is small, the reactant accumulates in the lower part of the reactor, the height of the reactant in the reactor becomes low, and the area receiving heat from the side wall of the reactor becomes small, so that the heat is efficiently heated. It cannot be exchanged. [0004] Conversely, when there are a large amount of reactants, the height of the reactants in the kettle also increases, and the area receiving heat from the side wall of the reactor increases, so that heat exchange can be performed relatively efficiently. [0005] It is an object of the present invention to provide a heat exchange vessel which can efficiently exchange heat with the entire heat exchanged object even when the heat exchanged amount is small. Means taken to solve the above-mentioned problem is to supply a heating or cooling fluid to a substantially cylindrical container containing a heat-exchanged material therein, and In the case of directly or indirectly exchanging heat with the exchanged material, the container has a vertically long shape, and the diameter decreases toward the bottom of the container. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The heat exchange container has a vertically long shape and the diameter decreases toward the bottom of the container, so that the volume at the lower portion of the container is reduced.
Even if the heat exchange object has a small capacity, the predetermined height is maintained in the container, the heat exchange area from the container side surface is increased, and almost the entire heat exchange object can be efficiently exchanged. FIG. 1 shows an example in which a reaction vessel 1 is used as a heat exchange vessel as shown in FIG. The diameter of the reaction vessel 1 containing a heat exchange product (not shown) is reduced as it goes downward in an inverted conical shape. The jacket 2 is attached so as to cover almost the entire side surface of the reaction vessel 1. A heating fluid or a cooling fluid is supplied to the jacket portion 2 to indirectly exchange heat with the heat exchange target in the reactor 1. The portions not covered by the upper and lower jacket portions 2 of the reactor 1 are used as inlets and outlets for the heat exchange target, as well as stirring blades and temperature sensors (not shown) for stirring the internal heat exchange target. It will be a mounting opening. A steam supply pipe 3 for supplying steam as a heating fluid source is connected above the jacket portion 2. A valve 4 is attached to the steam supply pipe 3. On the other hand, it is connected to the ejector 6 through the communication pipe 5 below the jacket portion 2. A steam trap 7 which discharges only condensed steam condensed to the outlet side and does not discharge steam, and a bypass valve 8 thereof are attached to the communication pipe 5 in parallel. The lower end of the communication pipe 5 is connected to the suction chamber 9 of the ejector 6. The ejector 6, the tank 10, and the circulation pump 11
Are sequentially combined to form an ejector-type combination pump. A predetermined amount of a circulating fluid, usually normal-temperature water, is stored in the tank 10, and the water is circulated from the ejector 6 to the tank 10 by the circulation pump 11, and a suction force is generated in the suction chamber 9 by the suction action of the ejector 6. Then, the inside of the jacket portion 2 is maintained at a predetermined pressure state, that is, a positive pressure state above the atmospheric pressure or a negative pressure state below the atmospheric pressure. A circulating fluid supply pipe 12 is connected to the tank 10 via a valve 13. Since the suction force generated by the ejector 6 becomes a saturation pressure corresponding to the temperature of the fluid flowing down in the ejector 6, the fluid is replenished from the circulating fluid replenishing pipe 12 and the fluid temperature is appropriately adjusted, whereby the ejector 6 The suction force can be arbitrarily controlled. For example, when the reactor 1 is heated by supplying low-temperature steam of 80 ° C. into the jacket portion 2, the suction force of the ejector 6 is reduced to the saturated pressure of the steam at a temperature slightly lower than 80 ° C. A predetermined temperature state can be maintained by adjusting the temperature of the circulating fluid so that a suction force of a corresponding pressure is obtained. By lowering the temperature of the circulating fluid and lowering the suction pressure of the ejector 6, the temperature of the heated steam can be further lowered. The circulation path 14 from the circulation pump 11 is branched and a surplus fluid discharge pipe 15 and a valve 16 are attached. By opening the valve 16, the surplus fluid in the tank 10 can be discharged out of the system. The circulation path 14 is further branched, and the circulation fluid supply pipe 17 is connected to the jacket 2. Circulating fluid supply pipe 17
Is mounted with a valve 18. By supplying a part of the circulating fluid to the jacket 2, the reactor 1 can be cooled instead of steam heating. On the other hand, a cooling fluid supply pipe 20 is connected to the upper right portion of the jacket 2 via a valve 19. By supplying the cooling fluid from the cooling fluid supply pipe 20 to the jacket portion 2, cooling at a temperature different from that of the circulating fluid can be performed. When heat exchange is performed in the reaction vessel 1, even if the quantity of the heat exchanged substance accommodated in the reaction vessel 1 is small, the heat exchanged substance is not reacted because the volume at the bottom of the reaction vessel 1 is small. By occupying a relatively upper portion of the shuttle 1, the contact area with the jacket portion 2 is increased, and the entire heat exchange object is efficiently exchanged with heat. For example, when heating the reactor 1, the valve 4 is opened to supply heating steam to the jacket 2, and the circulating pump 11 is driven to draw the inside of the jacket 2 by the suction force of the ejector 6. Is brought into a predetermined pressure state, whereby the reactor 1 is heated by the heating steam at a predetermined temperature in the jacket portion 2. The steam deprived of heat by heating the reactor 1 is condensed and condensed, and is sucked by the ejector 6 from the communication pipe 5 and the steam trap 7 or the bypass valve 8 to reach the tank 10. When the reactor 1 is cooled instead of heating,
The supply of steam from the steam supply pipe 3 is stopped, the valve 18 is opened, and a part of the circulating fluid is supplied from the circulating pump 11 to the jacket portion 2, whereby the circulating fluid cools the sensible heat. Further, when the inside of the jacket portion 2 is at a predetermined low pressure state by the suction force of the ejector 6, latent heat cooling is performed by evaporating the supplied circulating fluid, and the heat exchange target in the reaction vessel 1 is cooled to a predetermined temperature. Cool to temperature. The vaporized vapor generated by cooling the reactor 1 and the circulating fluid not vaporized are sucked into the ejector 6 via the valve 8 and reach the tank 10. By supplying the cooling fluid from the cooling fluid supply pipe 20 to the jacket portion 2, cooling at a temperature different from that of the circulating fluid can be similarly performed. In this embodiment, an example has been shown in which the jacket portion 2 is provided on the outer periphery of the reaction vessel 1 to indirectly exchange heat inside the reaction vessel 1. It is also possible to supply steam or a cooling fluid into 1 and directly exchange heat. According to the heat exchange container of the present invention, the container has a vertically long shape, and the diameter is reduced toward the lower part of the container. Also, the predetermined height is maintained in the container, the heat exchange area from the container side surface is increased, and the entire heat exchanged object can be efficiently heat-exchanged.

[Brief description of the drawings] FIG. 1 is a configuration diagram showing an embodiment of a heat exchange container of the present invention. [Explanation of symbols] 1 reactor 2 Jacket part 3 Steam supply pipe 6 Ejector 10 tanks 11 Circulation pump 17 Circulating fluid supply pipe 20 Cooling fluid supply pipe

Claims (1)

Claims 1. A method of supplying a heating or cooling fluid to a substantially cylindrical container containing a heat exchange object therein to directly or indirectly exchange heat with the heat exchange object. A heat exchange container characterized in that the container has a vertically long shape, and the diameter decreases toward the bottom of the container.