JP2009030812A - Heating method and device for piston rod section of cylinder in exhaust emission control equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating method for a piston rod section of a cylinder in exhaust emission control equipment for preventing the adhesion of contents of exhaust gas to a piston rod of the cylinder for reciprocating and moving a poppet type damper and the occurrence of dew condensation. <P>SOLUTION: In this heating method for the piston rod section of the cylinder in the exhaust emission control equipment, a plurality of exhaust gas supply and exhaust ports 2, 3 in a heat storage combustion type exhaust emission control device 1 for burning and treating the exhaust gas containing combustible toxic contents such as a volatile organic compound are opened and closed by operating a plurality of poppet type dampers 6, 7 reciprocated and moved by the extension and contraction operation of the cylinders 8, 9 in an interlocking relationship to supply or exhaust exhaust gas into/from the heat storage combustion type exhaust emission control device 1. A part of the treated exhaust gas exhausted from a plurality of exhaust gas supply and exhaust ports is fed into sections around a part where the exhaust gas is exposed to the atmosphere when the poppet type dampers in the piston rod section of the cylinder move backward. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a method and apparatus for heating a piston rod portion of a cylinder in an exhaust gas purification facility, and more specifically, a regenerative combustion type exhaust gas purification device for combustion treatment of exhaust gas containing flammable harmful components such as volatile organic compounds. In order to supply and discharge exhaust gas to and from the regenerative combustion exhaust gas purification device by opening and closing the plurality of exhaust gas supply / exhaust ports in conjunction with a plurality of poppet dampers that reciprocate by cylinder expansion and contraction operation The present invention relates to a method and apparatus for heating a piston rod portion of the cylinder in the exhaust gas purification facility.

The applicant of the present invention, as one of the exhaust gas purification equipment, a plurality of exhaust gas inlets and outlets in a regenerative combustion exhaust gas purification device that combusts exhaust gas containing flammable harmful components such as volatile organic compounds, Proposed and applied for a patent to supply and discharge exhaust gas to the regenerative combustion exhaust gas purification device by opening and closing multiple poppet dampers that move up and down by the expansion and contraction operation of the cylinder. Yes.

JP 2004-138358 A

However, in the conventional exhaust gas purification equipment configured as described above, an upward cylinder in which a poppet type damper is fixed to the tip of a piston rod is mounted on the outer surface of the heat storage combustion type exhaust gas purification device, and the damper moves up and down. Each time, the piston rod reciprocates between the regenerative combustion exhaust gas purification device and the outside atmosphere. Therefore, when a relatively low temperature piston rod in the atmosphere enters the regenerative combustion exhaust gas purification device as the damper rises, the portion of the piston rod that has entered the regenerative combustion exhaust gas purification device enters As a result, the piston rod may increase the resistance of the sliding part on the wall of the regenerative combustion exhaust gas purification device or cause malfunction due to the increase in resistance. Or problems such as corrosion.

The present invention has been made in view of the above circumstances, and an object of the present invention is to purify exhaust gas without causing components of exhaust gas to adhere to or condense on the piston rod of a cylinder that reciprocates a poppet type damper. An object of the present invention is to provide a method and an apparatus for heating a piston rod portion of a cylinder in equipment.

In order to achieve the above object, a method for heating a piston rod portion of a cylinder in an exhaust gas purification facility according to the present invention is a regenerative combustion exhaust gas purification device that combusts exhaust gas containing a flammable harmful component such as a volatile organic compound. By supplying and discharging a plurality of exhaust gas supply / exhaust ports in conjunction with a plurality of poppet dampers that reciprocate by cylinder expansion and contraction, exhaust gas is supplied to and discharged from the regenerative combustion exhaust gas purification device. A method of heating a piston rod portion of the cylinder in the exhaust gas purification equipment, wherein a part of the treated exhaust gas discharged from the plurality of exhaust gas supply / exhaust ports is transferred to the poppet type in the piston rod portion of the cylinder. When the damper moves backward, it is sent around the part exposed to the atmosphere.

As is apparent from the above description, the present invention provides a cylinder expansion / contraction operation for a plurality of exhaust gas supply / exhaust ports in a heat storage combustion exhaust gas purification apparatus that performs combustion treatment of exhaust gas containing flammable harmful components such as volatile organic compounds. The piston rod part of the cylinder in the exhaust gas purification equipment that supplies and discharges exhaust gas to the regenerative combustion exhaust gas purification device is heated by opening and closing a plurality of poppet type dampers reciprocated by A part of the treated exhaust gas discharged from the plurality of exhaust gas supply / exhaust ports in a portion of the piston rod portion of the cylinder that is exposed to the atmosphere when the poppet damper is retracted. Since the piston rod part of the cylinder is heated because it is fed to the surroundings, the poppet type damper in the piston rod part moves backward The portion that is exposed to the atmosphere when the, or adhered containing component of the exhaust gas, exhibits an excellent practical effect, such that the or condensation can be prevented.

Hereinafter, an embodiment of exhaust gas purification equipment to which the present invention is applied will be described in detail with reference to FIG. As shown in FIG. 1, a regenerative combustion exhaust gas purification apparatus 1 that combusts exhaust gas containing a flammable harmful component such as a volatile organic compound has two supply / exhaust ports 2 and 3 for supplying and discharging exhaust gas. The first guide member 4 for guiding untreated exhaust gas to the supply / discharge port 2 is provided on the lower surface of the wall portion having the supply / discharge port 2, and the wall portion having the supply / discharge port 3. The second induction member 5 for inducing the treated exhaust gas from the supply / exhaust port 3 into the atmosphere is mounted on the lower surface of each. A blower (not shown) for sending untreated exhaust gas is connected to the first guide member 4 via a duct (not shown).

In addition, two poppet dampers 6 and 7 for opening and closing the supply / discharge port 2 and the supply / discharge port 3 are disposed directly above the two supply / discharge ports 2 and 3, respectively, so as to be movable up and down. In these two poppet type dampers 6 and 7, the tip ends of the piston rods of the two upward cylinders 8 and 9 are fixed through the connecting rods 10 and 11, respectively. The type dampers 6 and 7 are moved up and down by the expansion and contraction of the two cylinders 8 and 9, respectively. The cylinders 8 and 9 are respectively attached to the lower surfaces of the first guide member 4 and the second guide member 5 through two cylindrical support members 12 and 13 surrounding the connecting rods 10 and 11, respectively. In addition, the inside of the support member 12 is partitioned up and down in an airtight manner by a partition member 14 at a substantially central position. A heat insulating material 16 is stuck to the inner surface of the upper chamber 15 in the support member 12, and when the poppet damper 6 is lowered by the contraction operation of the cylinder 8, the connecting rod 10 is in the atmosphere. An enclosure means for hermetically enclosing the portion exposed to. Further, seal members 17 and 18 are attached to the upper chamber 15 at locations where the connecting rod 10 penetrates.

Further, the inside of the second guide member 5 and the inside of the upper half of the support member 12 are connected in communication via a guide pipe 19, and the inside of the top half of the support member 12 is connected through a communication pipe (not shown). And communicated with the suction port of the blower.

  In the apparatus configured as described above, when the exhaust gas purification facility is operated, the heated exhaust gas that has been processed in the second induction member 5 is sent into the upper chamber 15 of the support member 12 through the induction pipe 19. Therefore, when the poppet damper 6 is lowered by the contraction operation of the cylinder 8, the portion exposed to the atmosphere in the connecting rod 10 is heated by the treated exhaust gas in the upper chamber 15. For this reason, even if the portion of the connecting rod 10 exposed to the atmosphere when the poppet type damper 6 is lowered enters the first guide member 4 by the extension operation of the cylinder 8, exhaust gas components are adhered to it. There is no condensation.

In the above embodiment, the treated exhaust gas discharged from the second induction member 5 and flowing through the upper chamber 15 is sent to the suction port of the blower, but is not limited thereto. Instead, the treated exhaust gas is sucked and discharged from the second induction member 5 by using a blower, and then sent to the upper chamber 15, and then the duct that guides untreated exhaust gas to the first induction member 4 (see FIG. (Not shown).
Further, in the above embodiment, the poppet damper 6 is connected to the tip of the piston rod of the cylinder 8 via the connecting rod 10, and the heated treated exhaust gas in the second induction member 5 is Although the connecting rod 10 is heated, the piston rod of the cylinder 8 is lengthened to omit the connecting rod 10, and the poppet damper 6 is directly fixed to the tip of the piston rod to heat the piston rod. You may do it.
In the above-described embodiment, the poppet type damper 6 is moved up and down by the expansion and contraction operation of the upward cylinder 8. However, the invention is not limited to this, and the poppet type damper is expanded and contracted by the side cylinder. The gas supply / exhaust port for supplying and discharging the exhaust gas provided on the side wall of the heat storage combustion exhaust gas purification device may be opened and closed.

It is a longitudinal cross-sectional view which shows the principal part of one Example of the waste gas processing equipment which employ | adopted this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Thermal storage combustion type exhaust gas purification apparatus 2; 3 Supply / exhaust port 4 1st guide member 5 2nd guide member 15 Upper chamber 19 Guide pipe

Claims (2)

In the regenerative exhaust gas purification system that burns and processes exhaust gas containing flammable harmful components such as volatile organic compounds, multiple poppet dampers that reciprocate by the expansion and contraction of the cylinder are linked to the multiple exhaust gas supply and exhaust ports. The piston rod portion of the cylinder in the exhaust gas purification equipment configured to supply and discharge exhaust gas to the regenerative combustion exhaust gas purification device by opening and closing,
A part of the treated exhaust gas discharged from the plurality of exhaust gas supply / exhaust ports is sent around a portion of the piston rod portion of the cylinder that is exposed to the atmosphere when the poppet damper is retracted. The heating method of the piston rod part of the cylinder in the exhaust gas purification equipment. In the regenerative exhaust gas purification system that burns and processes exhaust gas containing flammable harmful components such as volatile organic compounds, multiple poppet dampers that reciprocate by the expansion and contraction of the cylinder are linked to the multiple exhaust gas supply and exhaust ports. An apparatus for heating the piston rod part of the cylinder in the exhaust gas purification equipment configured to supply and discharge exhaust gas to the regenerative combustion exhaust gas purification device by opening and closing,
An enclosing means for airtightly enclosing a portion of the piston rod portion of the cylinder that is exposed to the atmosphere when the poppet damper is retracted;
A guide pipe for guiding a part of the treated exhaust gas discharged from the plurality of exhaust gas supply / exhaust ports to the surrounding means;
A blower that feeds exhaust gas into the exhaust gas supply / exhaust port or sucks treated exhaust gas from the exhaust gas supply / exhaust port;
A device for heating a piston rod portion of a cylinder in an exhaust gas purification facility.