KR102359576B1 - Evaporated waste gas burning system for volatile organic compounds tank - Google Patents

Abstract

The present invention relates to a device for collecting, separating and storing vaporized substances, which are volatile organic compounds generated from storage materials, in an oil and volatile chemical storage tank, and a volatile substance storage tank for storing oil and volatile chemical substances (11, 12, 13, 14, 15, 16, 17, 18) and to be installed in the volatile material storage tank (11, ...), vaporized material in the volatile material storage tank (11, . It consists of a collection and separation device consisting of one or more vapor collection and storage tanks (2, 3) that separate from, collect and store.

Description

Evaporated waste gas burning system for volatile organic compounds tank

In the oil and volatile chemical storage tank, the present invention uses a waste vaporized material collection and storage tank that collects, separates and stores vaporized substances that are volatile organic compounds [VOC: volatile organic compounds] generated from the storage material as an element. It relates to a device for treating vaporized substances in a volatile substance storage tank.

When oil and volatile chemicals are stored in a storage tank, the pressure inside the tank increases due to the vaporization phenomenon that occurs as the volatile materials evaporate inside the tank,

When a high-pressure volatile material is filled in the tank due to this evaporation phenomenon, the storage capacity of the tank is reduced due to this loss. Therefore, if the storage tank is sealed to prevent such vaporization, there is a risk of the tank exploding due to the pressure of the volatile substances being evaporated.

Therefore, so far, a discharge pipe is installed in the upper part of the storage tank, and the discharge pipe is installed so that volatile substances can be induced and discharged by integrating each tank or several tanks, but using a combustor using gas or liquid fuel. Continuous incineration for 24 hours using combustion devices (RTO, RCO) has been a common waste VOC treatment method so far.

In the treatment of vaporized substances by combustion, even if the vaporized substances generated from each tank are relatively small, the vaporization action is continuous, so that the exhausted vaporized substances combustion device must be continuously operated without stopping, and thus the vaporized substances There is a serious drawback that it is not economical to incinerate because the treatment cost is excessive.

In addition, since the cost for incineration is so high, if the vaporized material generated in the tank is discharged to the atmosphere without permission, the evaporation of the volatile material in the solution in the tank is accelerated, and losses due to the evaporation effect of the inner solution occur quickly, resulting in huge economic loss. Of course, there is a defect in that the balance of the composition ratio of the use for the use of chemical solutions or organic components in the tank is broken due to the separation of volatile substances, and the quality is also reduced,

In addition, volatile substances released into the atmosphere form ozone (O3) that pollutes the atmosphere, causing many health and health problems to the extent of issuing an ozone advisory.

Korean Patent Application No. 10-2018-0051064 (2018.05.03.) is a crude oil recovered by liquefying volatile organic compounds generated from a liquid cargo storage tank in a carrier that uses natural gas as a fuel and transports liquid cargo such as crude oil Disclosed is a system and method for recovering organic compounds for a carrier, which is a volatile organic compound recovery system for a crude oil carrier using natural gas as a propulsion fuel. ; a second condenser for condensing volatile organic compounds (VOC) generated in the crude oil storage tank using natural gas supplied as the fuel as a refrigerant; LVOC storage tank for storing the LVOC condensed by the cooling and heat of the natural gas; a pretreatment device for pre-treating the volatile organic compound supplied to the second condenser in order to increase the recovery rate of the LVOC; and a combustion device using the liquefied natural gas and LVOC as fuel; discloses a volatile organic compound recovery system for a crude oil carrier configured including.

However, this requires a device for condensing the vapors and a pretreatment device for pre-treating the volatile organic compound supplied to the second condenser, so the facility cost is excessive and the purpose of use of the invention is completely different.

And, the Republic of Korea Patent Application No. 10-2008-0039988 (2008.04.29.) discloses a first part of a ventilation pipe having one end connected to an oil storage tank, a second part of the ventilation pipe having one end exposed to outside air, and the ventilation pipe a vent pipe consisting of a third part of the vent pipe between the first part and the second part of the vent pipe; a heat conduction plate having a lower surface fixedly coupled to the outer circumferential surface of the third part of the vent pipe and conducting heat from the third part of the vent pipe; a thermoelectric element that is seated on the upper surface of the heat conduction plate and includes a heat absorbing part that absorbs heat from the heat conduction plate when a predetermined power is applied, and a heat generating part that radiates the heat absorbed from the heat absorbing part; a heat sink for absorbing heat in contact with the heating part of the thermoelectric element; Disclosed is an apparatus for recovering oil vapor of an oil storage tank vent pipe including a cooling fan fixedly coupled to an upper surface of the heat sink and dissipating heat of the heat sink to the outside in a state in which a predetermined power is applied.

However, since the structure is too complicated, structural economy cannot be promoted, and it is also not suitable for storage and treatment of vaporized substances.

Korean Patent Application No. 10-2018-0051064 (2018.05.03.) Korean Patent Application No. 10-2008-0039988 (2008.04.29.)

Accordingly, the present invention

In the oil and volatile chemical storage tank, the waste volatile organic compounds [Volatile Organic Compounds: VOC: 揮發性有機化合物] generated from the storage material are treated, and the pressure inside the tank due to the substances generated by the vaporization phenomenon By avoiding the increase, it is possible to solve the decrease in the volume of the solution due to the increase in the volume of the vaporized material, thereby eliminating the risk of explosion due to the increase in the pressure of the storage tank, and preventing the release of waste VOC substances caused by the vaporization to the atmosphere to pollute the air. In addition, it reduces the flash point and prevents component transformation of the storage solution due to excessive loss of vaporization of the stored material, and increases the density of carbon molecules, which are the main constituents of the waste material, by applying pressure to the waste vaporized material, thereby concentrating the carbon molecules. Since the waste VOC has a low calorific value, but has a combustible condition, it is possible to use this effect to burn only the waste VOC, thereby significantly reducing the separate fuel cost for incineration of the waste VOC. Since the cost for incineration of waste VOC can be reduced, it is intended to solve the important problems of economic feasibility and efficiency, which are very important for waste VOC pollution prevention treatment.

In order to solve the above problems, the present invention provides a volatile material storage tank for storing oil and volatile chemicals, and a collection and separation device installed in the tank to separate, collect, and store vaporized materials from the volatile material storage tank The volatile material storage tank has an outlet at the upper end, and a discharge pipe is installed at the outlet to be connected to a collection and separation device, and the collection and separation device is configured by having one or more waste collection and storage tanks installed in parallel That is, each waste collection and storage tank has an inlet valve from the volatile material storage tank, and when vapors are filled so that the first waste collection and storage tank reaches a predetermined internal pressure, the inlet valve is closed and the first waste collection and storage tank is closed. The discharge port of the cargo collection and storage tank is opened so that the vapors discharged from the first waste collection and storage tank can be combusted with a combustor, and the first waste collection and storage tank after the combustion operation is ready to store the vapors again As above, when the first waste collection and storage tank is filled and the inlet valve is closed, the inlet valve of the second waste collection and storage tank is opened and the second waste collection and storage tank is filled with vapors. When the second waste collection and storage tank is filled with vapor, the outlet of the second waste collection and storage tank is opened so that the discharged vapor can be combusted with a combustor, and the combustion operation The second waste collection and storage tank, which has completed the process, is characterized in that it is ready to store the vapor again, and at this time, in order to store the waste VOC, the steam generated by itself without any device (blower, pump, etc.) or separate energy To provide an apparatus and method for incineration of vaporized substances in a volatile substance storage tank, characterized in that it is stored only under the pressure of

In the present invention configured as described above, in the oil and volatile chemical storage tank, the tank is filled with unusable waste vaporized material generated from the storage material, and the amount of solution in the storage tank(s) decreases due to the vaporization phenomenon together with the pressure generation, eliminates the risk of explosion due to the increase in tank pressure, reduces air pollution by preventing the release of vaporized substances to the atmosphere, lowers excessive vaporization loss of stored substances, and vaporized waste VOC In addition to reducing the cost of combustion and incineration of materials, the combustion materials required at this time can be used as energy by using the self-generated waste VOC, which has the effect of increasing the efficiency of combustion and storage safety.

1 is a simplified explanatory diagram of one embodiment of the present invention;

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be embodied in several different forms, and thus is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

The present invention provides a volatile material storage tank (11, 12, 13, 14, 15, 16, 17, 18) for storing oil and volatile chemicals [hereinafter referred to as “volatile material storage tank (11, ......)” ”] and installed in the volatile material storage tank (11, ...), which separates, collects, and stores vaporized substances from the volatile material storage tank (11, ......) It consists of a collection and separation device,

The volatile material storage tank (11, ......) has an outlet at the upper end, and a discharge pipe 10 connected to the collection and separation device is installed at this outlet,

The collection and separation device consists of one waste collection and storage tank, or two or more waste collection and storage tanks (2, 3) are installed in parallel, and each waste collection and storage tank (2, 3) has inlet valves (21, 31) from the volatile material storage tanks (11, ...) so that the first waste collection and storage tank (2) is filled with vapors to reach a predetermined internal pressure When the inlet valve 21 is closed and the outlet 22 of the first waste collection and storage tank 2 is opened, the waste discharged from the first waste collection and storage tank 2 is discharged into the combustor 6 ( RTO, RCO), and the first waste collection and storage tank 2 that has completed the combustion operation opens the inlet valve 21 and closes the outlet 22 to continuously generate waste (VOC) vapors to be ready for continuous storage.

As above, when the first waste collection and storage tank 2 is filled and the inlet valve 21 is closed, the inlet valve 31 of the second waste collection and storage tank 3 is opened and the second waste The cargo collection and storage tank (3) acts to store waste, and when the second waste collection and storage tank (3) is filled with waste, the second waste collection and storage tank (3) The discharge port 32 is opened so that the discharged waste can be combusted with the combustor 6 , and the second waste collection and storage tank 3 that has finished the combustion operation opens the inlet valve 31 and the outlet 32 . It provides a device for treating vaporized substances in a volatile substance storage tank, characterized in that by closing the volatile substances to be in a ready state to store the waste again.

It is safe to set the filling pressure (medium pressure) of the waste collection and storage tanks (2, 3) to 0.01~0.5kg/cm2. However, depending on the purpose of the facility or the durability pressure of the facility, the storage pressure is charged with a high pressure (more than 1kg/cm2). You may.

It is preferable that the waste collection and storage tanks (2, 3) have safety valves (25, 35) installed at the top for safety from pressure.

In oil and volatile chemical storage tanks, gaseous waste products (VOCs), which are unusable volatile organic compound pollutants generated from storage materials, are discharged to the atmosphere or incinerated separately for each storage tank as in the prior art. In the case of treatment, in order to burn and treat waste VOC, a burner for combustion using other fuels such as LPG, LNG, etc. is used to induce the vaporized waste VOC generated from the storage tank, artificially mixed using a blower and a pump, etc. Or, it is necessary to prepare the conditions for a complete combustion facility in a way that can be pyrolyzed by simply putting it in and burning it with so-called RTO (incinerator), RCO, etc. However, in the case of this structure, lung VOCs with a low carbon concentration in a small amount are mixed with the outside air upon inhalation and occur continuously for 24 hours with a thinner concentration. In this case, there is a problem in that the user has a problem in dealing with a huge operating energy cost.

However, the present invention solves this problem, and furthermore, it is possible to form a flame when the density (concentration) is increased by concentrating the pure waste VOC under pressure.

Therefore, the present invention can increase the density of carbon and use it as energy by increasing the density of carbon through the compression process and storing the waste VOC, which was thought to be a pollutant, without introducing external air through the compression process. From private companies with tanks or organic chemical tanks to large corporations, the heat required for waste VOC treatment at very low cost is used as energy in the process of burning waste VOC, and at this time, it is burned by burning using a combustion device. It allows you to obtain two effects at the same time, an increase in efficiency.

In addition, an automatic switch (23, 33) is installed in the waste collection and storage tanks (2, 3) and a pressure switch (24, 34) is installed. 23, 33) is opened for emergency release, and non-powered pressure safety valves 25 and 35 are installed to ensure safety due to overpressure regardless of power (power).

In the drawings, reference numerals 26 and 36 denote pressure sensors that check internal pressure, 4 denotes a control box, 5 denotes a blower, and 7 denotes a damper.

The principle of operation is as follows.

When the pressure of the waste collection and storage tanks (2, 3) rises and reaches the specified appropriate pressure for use as fuel, the internal pressure sensors (26, 36) of the waste collection and storage tanks (2, 3) control the signal. It is delivered to the box 4, and the control box 4 closes the inlet valves 21 and 31 and opens the outlets 22 and 32 so that the VOC stored in the concentrated state in the waste collection and storage tanks 2 and 3 is discharged. do.

The discharged VOC is supplied with air to the blower 5 and is combusted by the combustor 6 .

At this time, when two or more waste collection and storage tanks (2, 3) are installed in parallel and one of the two waste collection and storage tanks (2, 3) is used, the remaining one can continue to collect.

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Therefore, the present invention is limited to solving the problem by suggesting a method of incinerating the gas, which is a waste organic volatile matter (VOC) generated from the structure or device of an oil and organic chemical storage tank.

11, 12, 13, 14, 15, 16, 17, 18......Volatile material storage tank
10....... Discharge pipe
2, 3...... Waste collection and storage tanks
21, 31 .... Inlet valve
22, 32 .... Outlet
23, 33 .... Automatic switch
24, 34 .... Pressure switch
25, 35 .... Safety valve
26, 36 .... pressure sensor
4 ......... Control box
5 ......... Blower
6 ........ combustor
7 ........ Damper

Claims (2)

To be installed in the volatile material storage tanks (11, 12, 13, 14, 15, 16, 17, 18) for storing oil and volatile chemicals, and the volatile material storage tanks (11, ......) , consists of a waste collection and separation device that separates, collects, and stores vaporized substances from the volatile substance storage tanks (11, ...), and the volatile substances storage tanks (11, ......) has an outlet at the top, and a discharge pipe 10 connected to the waste collection and separation device is installed at the outlet, and the collection and separation device is composed of one or more waste collection and storage tanks 2 and 3,
The collection and separation device is configured by installing two or more waste collection and storage tanks (2, 3) in parallel, and each waste collection and storage tank (2, 3) is a volatile material storage tank (11, ..... .) with the inlet valves 21 and 31 from The discharge port 22 of the cargo collection and storage tank 2 is opened and the waste organic vapor, which is a harmful gas discharged from the first waste collection and storage tank 2, uses the waste collection and storage tank to increase the carbon density. The first waste collection and storage tank 2, which has completed the combustion operation, opens the inlet valve 21 and closes the outlet 22 to enable combustion with the combustor 6 for combustion at the pressure for the purpose of When the inlet valve 21 is closed as the first waste collection and storage tank 2 is filled and the inlet valve 21 is closed, the inlet valve of the second waste collection and storage tank 3 ( 31) is opened and the second waste collection and storage tank 3 acts to store vapors, and when the second waste collection and storage tank 3 is filled with vapors, the second waste The discharge port 32 of the cargo collection and storage tank 3 is opened so that the discharged waste can be combusted with the combustor 6, and the second waste collection and storage tank 3 that has finished the combustion operation has an inlet valve ( 31) and close the outlet 32 to make it ready to store gas, a waste that cannot be used again,
Automatic openers 23 and 33 and pressure switches 24 and 34 are installed in the waste collection and storage tanks 2 and 3, and when the pressure is detected by the pressure switch when the pressure rises more than necessary, the automatic opener 23 , 33) is opened and the waste organic material gas combustion treatment device from the volatile material storage tank, characterized in that the emergency discharge.
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