KR101871443B1 - Wet purification equipment for biogas and odor gas - Google Patents

Abstract

The present invention relates to a method for removing hydrogen sulphide and ammonia from biogas generated when digesting organic wastes including food wastes and wastewater treatment wastewater from a food wastewater treatment process or treating odor gas generated from wastewater treatment and livestock manure treatment facilities, Gas-wet refining facility.
The present invention relates to a biogas and odor gas wet refining facility for removing high concentrations of ammonia and hydrogen sulfide contained in biogas generated in the process of energy conversion of organic wastes or odor gases generated in environmental facilities, A blower for feeding the biogas or the malodor gas stored in the storage tank by pressure; The biogas or the malodor gas supplied by the blower is connected in series to the rear end of the blower and flows through the two washing chambers, A first cleaning tower which is firstly cleaned with a cleaning liquid sprayed on the upper side of each of the cleaning chambers; The biogas or the odor gas, which is connected in series to the rear end of the first washing column, flows in the lower portion and rotates in the normal direction from the lower portion to be discharged to the upper portion, A second cleaning tower which is secondarily cleaned with a cleaning liquid sprayed on the upper side of each of the cleaning chambers while passing through the cleaning tower; And a second cleaning chamber connected in series to the rear end of the second cleaning tower, wherein the desulfurized biogas or the malodor gas flows in the lower portion and is rotated in a normal direction from the inside to be discharged to an upper portion, And a third cleaning tower that is thirdly cleaned with a cleaning liquid sprayed on the upper side of each of the cleaning chambers while passing through the first cleaning chamber and the second cleaning chamber, wherein at least one water washing step, a desulfurization step and a deammonia step are performed according to the selection of the cleaning liquid, Gas or malodorous gas is wet-purified by using the wet gas purification apparatus of the present invention.

Description

{Wet purification equipment for biogas and odor gas}

The present invention relates to a method for removing hydrogen sulphide and ammonia from biogas generated when digesting organic wastes including food wastes and wastewater treatment wastewater from a food wastewater treatment process or treating odor gas generated from wastewater treatment and livestock manure treatment facilities, Gas-wet refining facility.

Many organic wastes energy resource facilities have been constructed so that organic wastes including food waste, food processing wastewater, animal wastes, livestock by-products can be processed and recycled as fertilizer.

On the other hand, biogas generated when digesting organic waste in an organic waste energy recycling facility can be utilized as a useful energy source.

In recent years, many local governments are constructing biogas plants consisting of processes such as producing, refining and storing biogas from organic wastes, away from simple ways of composting organic wastes.

In order to raise the purity of methane, which is a main species of biogas, purification process for removing hydrogen sulfide and ammonia which are impurities of odor gas and biogas is very important. Despite this, So far, there is a lack of technology to efficiently remove hydrogen sulfide and ammonia.

Therefore, it is necessary to develop a technology that can confirm and solve the problems that occur in the field operation of the existing malodor gas wet refining facilities, thereby securing more excellent purification performance and operation stability.

Various types of deodorization towers have been applied for the purpose of reducing odor gas generated in environmental facilities such as wastewater treatment facilities, livestock manure treatment facilities, and food waste disposal facilities, but they have satisfactory performance for high concentration odor gas There is a great need for a high-efficiency wet refining facility.

Korean Registered Patent No. 10-1341068, Dec. 11, 2013.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to efficiently remove hydrogen sulfide and ammonia contained in biogas generated in the process of energizing organic wastes, increase methane purity in biogas, And it is an object of the present invention to provide a biogas and odor gas wet refining facility capable of treating high concentration odor gas generated in an environmental facility.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood from the following description.

In order to accomplish the above object, the present invention provides a biogas and odor gas wet refining facility, comprising: a high concentration of ammonia and hydrogen sulfide contained in odor gas generated in biogas or environmental facilities generated in an energy- In a biogas and odor gas wet refining facility,
A blower for feeding the biogas or the malodor gas stored in the gas storage tank by pressure; The biogas or the malodor gas supplied by the blower is connected in series to the rear end of the blower and flows through the two washing chambers, A first cleaning tower which is firstly cleaned with a cleaning liquid sprayed on the upper side of each of the cleaning chambers; The biogas or the odor gas, which is connected in series to the rear end of the first washing column, flows in the lower portion and rotates in the normal direction from the lower portion to be discharged to the upper portion, A second cleaning tower which is secondarily cleaned with a cleaning liquid sprayed on the upper side of each of the cleaning chambers while passing through the cleaning tower; And a second cleaning chamber connected in series to the rear end of the second cleaning tower, wherein the desulfurized biogas or the malodor gas flows in the lower portion and is rotated in a normal direction from the inside to be discharged to an upper portion, And a third cleaning tower that is thirdly cleaned with a cleaning liquid sprayed on the upper side of each of the cleaning chambers while passing through the first cleaning chamber and the at least one washing process and the desulfurization process and the deammonia process according to the selection of the cleaning liquid, Characterized in that the malodorous gas is purified by wet process,
The first washing tower
A first cyclone which is installed at a lower portion of the first lower cleaning chamber and upwardly rotates the biogas or the malodor gas upwardly and downwardly divided by a first separation diaphragm; A first lower partial cleansing chamber provided in the first lower cleansing chamber for jetting water into the biogas or the odorous gas, and a second lower partial cleansing chamber provided at a lower portion of the first lower cleansing chamber and connected to a water supply line, A first circulation water tank for collecting the water jetted from the first upper washing chamber and supplying water to the first lower partial washing chamber and a second circulation water tank for spraying the aqueous sodium hypochlorite solution to the biogas or the odor gas Liquid separator, a first poling layer disposed on the upper side of the first separating partition plate to enlarge a gas-liquid contact area, and a second electromagnet disposed above the first upper partial capillary to perform a gas- And an aqueous solution of sodium hypochlorite, which is disposed at a lower side of the first upper wash chamber and is sprayed from the first upper partial branch pipe, is connected to the water supply line and the sodium hypochlorite supply line to the first upper partial branch pipe And a first recovery pipe for recovering the aqueous sodium hypochlorite solution into a second circulation water tank for supplying the aqueous sodium hypochlorite solution,
The second cleaning tower
A second cyclone which is installed at a lower portion of the second lower cleaning chamber and turns the biogas or the malodor gas upward; A second lower partial scrubber installed in the second lower cleaning chamber for spraying the aqueous solution of sodium hydroxide to the biogas or the odorous gas; and a second lower partial scrubber disposed in the lower portion of the second lower cleaning chamber, A third circulation water tank for recovering the sodium hydroxide aqueous solution and connected to the water supply line and the sodium hydroxide supply line to supply the aqueous sodium hydroxide solution to the second lower partial osculator; A second upper partial tube connected to the water tank for spraying the sodium hydroxide aqueous solution into the biogas or the odor gas, A second upper polishing chamber which is provided on a lower side of the second upper cleaning chamber and which is provided on the upper side of the second upper partial cleansing chamber to have a gas- And a second recovery pipe for recovering the aqueous sodium hydroxide solution injected from the upper partial ozonizer into the third circulation water tank,
The third washing tower
A third cyclone disposed at a lower portion of the third lower cleaning chamber for upwardly rotating the biogas or the malodor gas; A third lower partial scavenger installed in the third lower cleaning chamber for spraying the aqueous solution of sulfuric acid into the biogas or the odorous gas, and a third lower partial scavenger installed at the lower portion of the third lower cleaning chamber, A fourth circulation water tank for recovering the aqueous solution and connected to the water supply line and the sulfuric acid supply line so as to supply the aqueous sulfuric acid solution to the third lower partial capillary; A third poling layer provided on the third separating partition plate to enlarge the gas-liquid contact area; and a third upper polling layer disposed above the third separating partition, A third eleminate provided on the upper side of the third upper washing chamber and provided on the lower side of the third upper washing chamber for recovering the water sprayed from the third upper partial washing tube into the first circulating water tank, And a return pipe,
The gas-liquid separator includes a first gas-liquid separator provided immediately before the first discharge pipe, and a second gas-liquid separator provided immediately before the second discharge pipe. And a third gas-liquid separator provided immediately before the third discharge pipe,
A first inspection window is provided on one side of the first cleaning tower, and a second inspection window is provided on one side of the second cleaning tower. The second inspection window is provided on one side of the third cleaning tower. And a third inspection window for inspecting the inside is installed.

In the biogas and malodor gas wet refining facility according to the present invention, a total of three washing towers are connected in series, and a washing chamber is divided into upper and lower multi-stages inside each washing tower, and biogas or odor gas The desulfurization step and the deammonia step can be appropriately set and operated according to the characteristics of the biogas or odor gas, and the chemical solution to be used can be supplied individually according to the composition ratio of the biogas or the odorous gas, It is possible to remove harmful gas components or to dramatically increase the purity of methane, which is a useful gas component, by efficiently removing high concentrations of organic dust, steam, hydrogen sulfide, ammonia and other gas components contained in the gas.

1 is a plan view of a biogas and odor gas wet refining facility according to a preferred embodiment of the present invention.
2 is a front view of a biogas and odor gas wet refining facility according to a preferred embodiment of the present invention.
3 is a side view of a biogas and odor gas wet refining facility according to a preferred embodiment of the present invention.
4 is a schematic diagram of a biogas and odor gas wet refining facility according to a preferred embodiment of the present invention.

The present invention relates to a method and apparatus for purifying biogas generated in a process of energizing organic wastes including food waste, food processing wastewater, industrial wastes, livestock by-products, and the like, to improve methane purity, The present invention relates to a biogas and odor gas wet refining facility having the purpose of removing hydrogen sulfide, ammonia, and noxious gas components from the gas.

In particular, the biogas and malodorous gas wet refining facility according to the present invention is characterized by effectively removing the high concentration of hydrogen sulfide and ammonia contained in the biogas and utilizing the purified biogas as a useful energy source.

It is also characterized by eliminating harmful gas components from odorous gases generated in environmental facilities such as wastewater treatment facilities, thereby solving complaints of facility operators and local residents due to odor.

In this feature, three washing towers are connected in series, and two washing chambers are divided into two upper and lower washing chambers, respectively, so that odor gas and biogas stored in the gas storage tank are fed by the blower to the bottom of each washing tower, , A biogas or a malodorous gas is washed with water, an aqueous solution of sodium hypochlorite, an aqueous solution of sodium hydroxide, and an aqueous solution of sulfuric acid.

Therefore, the total number of times of the washing process, the desulfurization process, and the deammonia process can be appropriately set and operated according to the characteristics of the odor gas and the biogas to be purified by using a total of six washing chambers provided in the three washing towers Therefore, it is possible to efficiently remove the organic dust, steam, odor gas, hydrogen sulfide, and ammonia contained in the malodorous gas and the biogas to dramatically increase the purity of methane, which is a useful gas component.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a biogas and malodorous gas wet refining apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, the wet scrubber for biogas and malodor gas according to a preferred embodiment of the present invention includes a blower (not shown), a first washing tower 100, a second washing tower 200, 3 washing tower 300.

However, in most of the biogas plants, since the acid compound such as hydrogen sulfide has a higher concentration than the base compound such as ammonia, the preferred procedure of the reaction tower process is as shown in Fig. 4, in which the lower washing chamber (water washing) The upper cleaning chamber (aqueous sodium hypochlorite solution cleaning) of the first cleaning tower 200, the lower cleaning chamber (caustic soda aqueous solution cleaning) of the second cleaning tower 200, the upper cleaning chamber (Washing with caustic soda aqueous solution), the lower cleaning chamber (aqueous sulfuric acid solution cleaning) of the third cleaning tower 300 and the upper cleaning chamber (water cleaning) of the third cleaning tower 300 in this order, Or may be varied and operated depending on the component composition ratio of the malodorous gas.

First, the blower is configured to generate biogas stored in the gas storage tank 500 during the digestion process of the organic waste, and to send the biogas to the first washing tower 100 to be described later.

At this time, the blower has a sufficient ventilation capacity so that the biogas or odor gas passes through the first washing tower 100, the second washing tower 200, and the third washing tower 300 in order to perform a smooth purification treatment .

Next, the first washing tower 100 is connected in series to a rear end of the blower through a transfer pipe. After the biogas or odor gas pumped by the blower flows into the inside thereof, And the organic dust contained in the biogas or odor gas is first washed and cleaned.

To this end, the first washing tower 100 is divided into upper and lower portions by a first upper washing chamber 110 and a lower first washing chamber 108 by a first separation partition plate 106, A first inflow pipe 102 communicating with the chamber 108 for introducing biogas or odor gas is provided and the first inflow pipe 102 communicating with the first upper clean chamber 110 is connected to the first inflow pipe 102 through which the biogas or odor gas is discharged. (104).

A first cyclone 112 is installed below the first cleaning tower 100 and a first circulation water tank 412 in which water is stored below the first cyclone 112 is connected to the first lower cleaning chamber 108, As shown in FIG.

The first inflow pipe 102 is formed in a spiral shape so that the biogas or odor gas can be swirled in the normal direction along the inside of the first lower washing chamber 108 and the first upper washing chamber 110, And is laid on one side of the lower part of the washing tower 100.

The first discharge pipe 104 is rotated by the first cyclone 112 along the inner center of the first lower washing chamber 108 and the first upper washing chamber 110 to generate a biogas or odor gas Is vertically installed at the center of the upper portion of the first cleaning tower 100 so as to be smoothly discharged.

On the other hand, on the upper side of the first lower washing chamber 108, there is provided a first lower partial branch pipe 114 for injecting water into the biogas or odor gas, and the first lower partial branch pipe 114 is connected to the first lower partial branch pipe 114, The nozzle 116 is installed downward and connected to the first circulation water tank 412. The first circulation water tank 412 is connected to the water supply line 410 and the water stored in the first circulation water tank 412 is supplied to the first lower partial shell 114 in accordance with the operation of the first circulation pump 414 .

Accordingly, the water injected from the first lower partial shell 114 is uniformly mixed with the biogas or the odor gas introduced by the action of the first cyclone 112, so that the odorous gas and the organic dust contained in the biogas, Malodorous gas, and gas components dissolved in water are absorbed and removed.

As a part of the hydrogen sulfide and ammonia contained in the biogas or odor gas is removed by the water, the treatment efficiency of the second washing tower 200 and the third washing tower 300 at the rear end is also increased.

However, in order to check the water pollution load of the first circulation water tank 412 and ensure efficient operation, a predetermined amount of water must be supplied to the first lower partial pipe 114.

The biogas or odor gas cleaned by water as described above flows into the first upper washing chamber 110 through the first separating partition plate 106. The water sprayed with the biogas or odor gas is recovered to the first circulation water tank 412 through the lower part of the first washing tower 100.

On the other hand, a first upper partial cleansing tube 118 for spraying sodium hypochlorite aqueous solution is provided on the upper side of the first upper cleansing chamber 110, And the first recovery pipe 122 is connected to a second circulation water tank 422 in which an aqueous solution of sodium hypochlorite is stored.

The second circulation water tank 422 is connected to a water supply line 410 for supplying water, a sodium hypochlorite supply line 420 for supplying sodium hypochlorite and a first phase partition pipe 118, A plurality of first upper spray nozzles 120 are installed downward in the partial capillary tube 118 and a sodium hypochlorite aqueous solution stored in the second circulation water tank 422 is supplied to the first phase And is supplied to the partial cap 118.

Accordingly, the biogas or odor gas cleaned by the water moves upward along the first upper cleaning chamber 110 and is discharged to the first discharge pipe 104. In this process, the concentration of the hydrogen sulfide is lowered by the gas-liquid reaction with the sodium hypochlorite aqueous solution .

At this time, a first polling layer 124 having a predetermined height is provided above the first separation diaphragm 106 to increase the gas-liquid contact area between the biogas or odor gas and the sodium hypochlorite aqueous solution to increase the contact time to maximize the gas-liquid reaction effect And the neutralization reaction is induced for hydrogen sulfide and ammonia in the nature of the chemical solution to lower the gas concentration by 20% or more.

A first eliminate 126 is provided on the upper side of the first phase partial tube 118 to separate moisture and moisture from the differential components of the sodium hypochlorite aqueous solution contained in the biogas or odor gas by the gas-liquid reaction.

A first gas-liquid separator 128 using centrifugal force is further provided immediately before the first discharge pipe 104 to separate the fine particles of the hypochlorite aqueous solution and the water droplets together with the first elinalate 126 into biogas Or may be separated from the odor gas, and only the gas component may be discharged to the second washing tower 200 to be described later.

Meanwhile, the sodium hypochlorite aqueous solution injected through the first upper partial branch pipe 118 in the first upper wash chamber 110 is recovered to the second circulation water tank 422 through the first recovery pipe 122 so that the sodium hypochlorite aqueous solution can be used again. do.

A first inspection window 130 is installed at one side of the first cleaning tower 100 so that the inside of the cleaning chamber can be seen through the cleaning chamber.

Next, the second washing tower 200 is connected to the rear end of the first washing tower 100 and is passed through the first washing tower 100, while being subjected to a washing process and a desulfurization process, It removes hydrogen sulfide by reduction reaction.

To this end, the second washing tower 200 is divided into upper and lower parts by the second upper washing chamber 210 and the second lower washing chamber 208 by the second separating partition plate 206, A second inflow pipe 202 communicating with the chamber 208 for introducing biogas or malodor gas and a second inflow pipe 202 communicating with the second upper clean chamber 210 at an upper portion and discharging biogas or odor gas, (Not shown).

A second cyclone 212 is disposed below the second washing tower 200 and a third circulating water tank 432 through which a sodium hydroxide aqueous solution is stored is disposed below the second cyclone 212. 208 in the vertical direction.

However, the second inlet pipe 202 is formed in a spiral shape so as to pivot the biogas or odor gas in the normal direction along the inside of the second lower washing chamber 208 and the second upper washing chamber 210, And is installed on one side of the lower part of the washing tower 200.

The second discharge pipe 204 is smoothly moved by the second cyclone 212 so that the biogas or odor gas rising and rotating along the inner center of the second lower washing chamber 208 and the second upper washing chamber 210 And is vertically installed in the upper center of the second cleaning tower 200 so as to be discharged.

On the other hand, on the upper side of the second lower washing chamber 208, a second lower partial arc tube 214 for spraying an aqueous solution of sodium hydroxide into the incoming biogas or odor gas is provided, The second lower spray nozzle 216 is installed downward and connected to the third circulation water tank 432.

The third circulation water tank 432 is connected to the water supply line 410 and the sodium hydroxide supply line 430 and the sodium hydroxide aqueous solution stored in the third circulation water tank 432 is connected to the third circulation pump 434 And then fed to the second lower subcube 214.

Therefore, the sodium hydroxide aqueous solution injected from the second lower partial shell 214 reacts with the biogas or odor gas again in a vapor-liquid reaction with the biogas or odor gas introduced by the action of the second cyclone 212 The hydrogen sulfide contained in the biogas or odor gas is absorbed and removed.

The biogas or odor gas cleaned by the aqueous solution of sodium hydroxide as described above flows into the second upper washing chamber 210 through the second separation partition plate 206. The sodium hydroxide aqueous solution injected into the biogas or odor gas is recovered into the third circulation water tank 432 through the lower portion of the second lower washing chamber 208.

On the other hand, on the upper side of the second upper washing chamber 210, a second upper partial tube 218 for spraying aqueous sodium hydroxide solution is provided, and a second upper partial tube 218 is connected to the third circulation water tank 432 , And a plurality of second upper injection nozzles 220 are installed downward in the second phase partition pipe 218.

A second recovery pipe 222 is connected to one side of the lower part of the second upper cleaning chamber 210. The second recovery pipe 222 is connected to the third circulation water tank 432. The third circulation water tank 432, Aqueous sodium hydroxide solution is supplied to the second phase partial tube 218 by the third circulation pump 434.

Therefore, the odor gas and the biogas, which have been washed again by the aqueous solution of sodium hydroxide, move upwards along the second upper cleaning chamber 210 and are discharged into the second discharge pipe 204, again reacting with the aqueous solution of sodium hydroxide in a gas- The lower the concentration of the water.

At this time, a second poling layer 224 having a predetermined height is provided above the second separation partition plate 206 to increase the gas-liquid contact area of the biogas or odor gas and the aqueous solution of sodium hydroxide to increase the contact time, thereby maximizing the vapor- More than 70% of hydrogen sulphide can be removed.

A second eliminate 226 is disposed above the second phase partial tube 218 to separate the differential components of the aqueous sodium hydroxide solution contained in the biogas or odor gas by the gas-liquid reaction.

A second gas-liquid separator 228 using centrifugal force is further provided immediately before the second discharge pipe 204 to separate the fine particles of the aqueous sodium hydroxide solution from the biogas or odor gas with the second elminate 226 Only the gas component of the biogas or odor gas can be discharged to the third washing tower 300 to be described later.

Meanwhile, the sodium hydroxide aqueous solution injected through the second upper partial cleansing tube 218 in the second upper cleansing chamber 210 is recovered to the third circulation water tank 432 through the second recovery pipe 222 so that it can be used again .

A second inspection window 230 is installed at one side of the second cleaning tower 200 to allow inspection of the inside of the cleaning chamber.

Finally, the third washing tower 300 is connected to the rear end of the second washing tower 200 and passes through the second washing tower 200 while passing through the desulfurizing process twice, It removes ammonia by oxidation reaction.

To this end, the third washing tower 300 is vertically divided into a third upper washing chamber 310 and a third lower washing chamber 308 by a third separation partition plate 306, A third inflow pipe 302 communicating with the chamber 308 and introducing a biogas or odor gas is provided and a third inflow pipe 302 communicating with the third upper clean chamber 310 at an upper portion and discharging biogas or odor gas, (Not shown).

A third cyclone 312 is provided below the third cleaning tower 300 and a fourth circulation water tank 442 through which the aqueous solution of sulfuric acid is stored is connected to the third lower cleaning chamber 308 As shown in Fig.

However, the third inflow pipe 302 is formed in a spiral shape so as to pivot the biogas or odor gas in the normal direction along the inside of the third lower cleaning chamber 308 and the third upper cleaning chamber 310, And is installed on one side of the lower part of the washing tower 300.

The third discharge pipe 304 smoothly flows the biogas or odor gas rising and rotating along the inner center of the third lower washing chamber 308 and the third upper washing chamber 310 by the third cyclone 312 And is vertically installed in the upper center of the third cleaning tower 300 so as to be discharged.

On the other hand, on the upper side of the third lower washing chamber 308, there is provided a third lower partial branch pipe 314 for spraying the aqueous sulfuric acid solution into the inflowing biogas or odor gas, and the third lower partial branch pipe 314 is provided with a plurality of 3 lower spray nozzle 316 is installed downward and connected to the fourth circulation water tank 442. [

The fourth circulation water tank 442 is connected to the water supply line 410 and the sulfuric acid supply line 440 and the aqueous solution of sulfuric acid stored in the fourth circulation water tank 442 is connected to the fourth circulation pump 444 3 < / RTI >

Therefore, the sulfuric acid aqueous solution injected from the third lower partial shell 314 is mixed with the biogas or odor gas uniformly by the action of the third cyclone 312 to react with the biogas or the odor gas, The ammonia contained in the gas can be removed by about 70% or more by the oxidation reaction.

As described above, the purified gas from which a basic gas such as ammonia is removed by the gas-liquid reaction with the aqueous sulfuric acid solution flows into the third upper cleaning chamber 310 through the third separation partition 306. The aqueous sulfuric acid solution injected into the biogas or odor gas is recovered to the fourth circulation water tank 442 through the lower portion of the third lower washing chamber 308.

On the other hand, on the upper side of the third upper cleaning chamber 310, a third phase partition pipe 318 for spraying water is provided, a third phase partition pipe 318 is connected to the first circulation water tank 412, A plurality of third upper spray nozzles 320 are installed downward in the three-phase partial capillary tube 318.

A third recovery pipe 322 is connected to one side of the lower portion of the third upper cleaning chamber 310. The third recovery pipe 322 is connected to the first circulation water tank 412 and the first circulation water tank 412, Water is supplied to the third phase partition pipe 318 by the first circulation pump 414.

Therefore, the biogas or odor gas that has been vapor-liquid-reacted by the aqueous solution of sulfuric acid moves upward along the third upper cleaning chamber 310 and is discharged by the third discharge pipe 304, so that the biogas or odor gas is cleaned by water and the aqueous sulfuric acid solution is removed.

At this time, a third pollination layer 324 having a predetermined height is provided above the third separation diaphragm 306 to increase the contact area between the biogas or the odor gas and water, thereby maximizing the cleaning effect.

On the upper side of the third phase partition tube 318, a third eliminate 326 is provided to separate water droplets from the differential components of the aqueous sulfuric acid solution contained in the biogas or odor gas by the gas-liquid reaction.

A third gas-liquid separator 328 using a centrifugal force is further provided immediately before the third discharge pipe 304, and fine particles of the aqueous solution of sodium hydroxide and moisture discharged from the second aqueous solution 326 together with the third elminate 326 And only the finally purified gas component is discharged to the outside.

Meanwhile, in the third upper wash chamber 310, the water sprayed through the third upper partial branch pipe 318 is recovered to the first circulation water tank 412 through the third water return pipe 322.

A third inspection window 330 is provided at one side of the third cleaning tower 300 so that the third inspection window 330 can be seen through the inside of the cleaning chamber.

As described above, the biogas and malodorous gas wet refining apparatus according to the present invention is characterized in that in the course of passing the biogas or odor gas through the first washing tower, the second washing tower and the third washing tower in order, water, sodium hypochlorite aqueous solution, A gas component dissolved in water, a hydrogen gas such as hydrogen sulfide gas, a hydrogen sulfide gas, a hydrogen sulfide gas, and a hydrogen sulfide gas are introduced into the reaction vessel through a flushing process, a desulfurization process and a deammonia process two times by injecting an aqueous sodium hydroxide solution and an aqueous sulfuric acid solution. , Ammonia, etc. can be separated and removed by separation and removal of about 90% or more. In the case of biogas, the purity of methane, which is the main species of biogas, can be increased. In the case of odorous gas, the high concentration of odorous gas components can be largely eliminated.

The above-described embodiments are merely illustrative, and various modifications may be made by those skilled in the art without departing from the scope of the present invention.

Therefore, the true technical protection scope of the present invention should include not only the above embodiments but also various other modified embodiments according to the technical idea of the invention described in the following claims.

100: First washing tower
102: first inlet pipe
104: First discharge pipe
106: first separation diaphragm
108: first lower cleaning chamber
110: first upper cleaning chamber
112: first cyclone
114: first lower partial cap
116: first lower spray nozzle
118: First phase partial cap
120: first upper spray nozzle
122: First water piping
124: first polling layer
126: first elminate
128: first gas-liquid separator
130: 1st check window
200: Second washing tower
202: second inlet pipe
204: second discharge pipe
206: second separation diaphragm
208: Second lower cleaning chamber
210: second upper cleaning chamber
212: second cyclone
214: second lower portion cap
216: second lower spray nozzle
218: Second phase partial cap
220: second upper spray nozzle
222: Second circulation piping
224: second polling layer
226: Second Eliminate
228: Second gas-liquid separator
230: Second check window
300: Third washing tower
302: Third inlet pipe
304: Third discharge pipe
306: third separation diaphragm
308: Third lower cleaning chamber
310: third upper cleaning chamber
312: Third cyclone
314: The third lower part officer
316: Third lower injection nozzle
318: Third phase captain
320: Third upper spray nozzle
322: Third water piping
324: third polling layer
326: Third Eliminate
328: Third gas-liquid separator
330: Third check window
410: Water supply line
412: First circulating water tank
414: first circulation pump
420: sodium hypochlorite supply line
422: the second circulating water tank
424: Second circulation pump
430: Sodium hydroxide feed line
432: Third circulating water tank
434: Third circulation pump
440: Sulfuric acid supply line
442: Fourth circulating water tank
444: fourth circulation pump
450: gas storage tank

Claims (5)

The water stored in the first circulation water tank 412 connected to the water supply line 410 is supplied to the plurality of first lower spray nozzles 116 installed downwardly to the first lower partial shell 114 by the operation of the first circulation pump 414, And a second circulation water tank 422 connected to the water supply line 410 and the sodium hypochlorite supply line 420. The sodium hypochlorite stored in the second circulation water tank 422 is supplied to the water supply line 410 and the sodium hypochlorite supply line 420, The aqueous solution is delivered to a plurality of first upper spray nozzles 120 provided below the first upper partial branch pipe 118 by the operation of the second circulation pump 424 and sprayed to the upper first partial spray nozzle 120 for cleaning the aqueous sodium hypochlorite solution The biogas or malodorous gas is discharged through the first discharge pipe 104 installed vertically to the upper center and the sprayed water is recovered to the first circulation water tank 412 through the lower portion While the injected baby goat A first inspection window 130 is installed at one side to recover the sodium aqueous solution to the second circulation water tank 422 through a first recovery pipe 122 connected to the lower side of the upper part, A first washing tower (100) which is firstly cleaned by a washing process with a washing liquid and a desulfurization process in the process of discharging the biogas or odor gas flowing downward to the upper part by rotating in a normal direction;
The sodium hydroxide aqueous solution stored in the third circulation water tank 432 connected to the water supply line 410 and the sodium hydroxide supply line 430 is downwardly installed in the second lower partial shell 214 by the operation of the third circulation pump 434 The lower part where the sodium hydroxide aqueous solution is washed with respect to the biogas or odor gas while being delivered to the plurality of second lower spray nozzles 216 and sprayed, and the sodium hydroxide aqueous solution stored in the third circulation water tank 432, The second upper spray nozzle 220 and the second upper spray nozzle 220. The second upper spray nozzle 220 and the second upper spray nozzle 220 are connected to each other by a pump 434, And the biogas or odor gas is discharged through the second discharge pipe 204 installed vertically to the upper center, and the sprayed aqueous sodium hydroxide solution is recovered into the third circulation water tank 432 through the lower portion A second check window 230 is installed on one side of the second circulating water tank 432 so that the second check window 230 can be seen through the second circulation pipe 222 connected to the lower side of the upper part, The biogas or odor gas firstly connected to the first washing tower 100 connected in series is flowed in the direction of the normal direction and is discharged to the upper part. In the process of discharging the biogas or odor gas, the second washing step A second washing tower 200;
The aqueous sulfuric acid solution stored in the fourth circulation water tank 442 connected to the water supply line 410 and the sulfuric acid supply line 440 is supplied to the third lower partial capillary tube 314 by the operation of the fourth circulation pump 444, The bottom of the first circulation water tank 412 and the bottom of the first circulation water tank 412 are connected to the third bottom injection nozzle 316, And a third upper spray nozzle 320 provided below the third upper partial capillary 318 to spray water and remove the aqueous sulfuric acid solution, 3, the biogas or odor gas is discharged through the discharge pipe 304, the sprayed aqueous sulfuric acid solution is recovered to the fourth circulation water tank 442 through the lower part, and the sprayed water is discharged to the third Through the recovery pipe (322) to the first circulation water And a third inspection window 330 is provided on one side of the second cleaning tower 200. The second cleaning window 330 is connected to the second cleaning tower 200. The second cleaned biogas or odor gas, A third cleaning tower 300 which is thirdly cleaned by the ammonia removal process of the oxidation reaction by the cleaning liquid in the process of being flowed in the normal direction and being discharged to the upper portion; And
The first washing tower 100 is connected in series to the rear end and the biogas or odor gas stored in the gas storage tank 500 is fed to the first washing tower 100 for feeding and biogas or odor gas is stagnant And a blower having a blowing capacity of a size that can be purified while sequentially passing through the first washing tower 100, the second washing tower 200, and the third washing tower 300 ,
In the first washing tower 100,
A biogas or odor gas pivoted in a normal direction by a spiral first inflow pipe 102 provided at one side of the bottom and a conical first cyclone 112 provided below the first inflow pipe 102 A first lower cleaning chamber 108 in which organic dust and cleaning liquid are centrifugally separated and the organic dust and cleaning liquid are collected by a first circulation water tank 412 communicating with the lower side of the first cyclone 112;
A first separating diaphragm (106) horizontally disposed above the first lower washing chamber (110) and passing biogas or odor gas flowing into the first lower washing chamber (110) to the center portion; And
A first poling layer 124 disposed above the first separating partition plate 106 and having a predetermined height for enlarging the gas-liquid contact area, a first elminate 126 above the first upper partial shell 118, A first gas-liquid separator 128 disposed immediately before the first discharge pipe 104 and using centrifugal force is disposed in order from the lower side to the upper side and flows through the central portion of the first separating diaphragm 106, Only a gas component of a biogas or odorous gas rising during the gas-liquid reaction is introduced into the first eliminate 126 and the second elominate 126 by the gas-liquid reaction between the biogas or odor gas passing through the layer 124 and the sodium hypochlorite aqueous solution, And a first upper washing chamber (110) passing through the first gas-liquid separator (128) and discharged to the first discharge pipe (104)
In the second washing tower 200,
A biogas or odor gas pivoted in the normal direction by a spiral second inlet pipe 202 provided at one side of the lower portion and a conical second cyclone 212 installed below the second inlet pipe 202, A second lower cleaning chamber 208 in which a gas-liquid reaction is induced between aqueous sodium hydroxide solution, a cleaning liquid is centrifuged, and a cleaning liquid is collected by a third circulation water tank 432 communicating with the lower side of the second cyclone 212;
A second separation partition 206 horizontally disposed above the second lower cleaning chamber 208 for passing biogas or odor gas flowing into the second lower cleaning chamber 208 and rising up to a central portion thereof; And
A second poling layer 224 disposed above the second separating partition plate 206 and having a predetermined height for enlarging the gas-liquid contact area, a second eliminate 226 disposed above the second upper partition tube 218, A second gas-liquid separator 228 disposed immediately before the second discharge pipe 204 and using centrifugal force is disposed in order from the lower side to the upper side and flows through the central portion of the second separating partition plate 206, Only a gas component of a biogas or odor gas rising while a gas-liquid reaction is induced between the second elixate 226 and the aqueous solution of sodium hydroxide, 2 gas-liquid separator 228 and discharged to the second discharge pipe 204,
In the third washing tower 300,
A biogas or odor gas pivoting in the normal direction by a spiral third inflow pipe 302 installed at one side of the bottom and a conical third cyclone 312 installed below the third inflow pipe 302, A third bottom cleaning chamber 308 in which the gas-liquid reaction is induced between the aqueous sulfuric acid solution, the cleaning liquid is centrifuged, and the cleaning liquid is collected by the fourth circulation water tank 442 communicating with the lower side of the third cyclone 313;
A third separation diaphragm 306 horizontally disposed above the third lower cleaning chamber 308 and passing biogas or odor gas flowing into the third lower cleaning chamber 308 to the center portion; And
A third polling layer 324 disposed above the third separating partition plate 306 and having a predetermined height for enlarging the gas-liquid contact area, a third elminate 326 above the third upper partition tube 318, A third gas-liquid separator 328 disposed immediately before the third discharge pipe 304 and using centrifugal force is disposed in order from the lower side to the upper side and flows through the central portion of the third separating partition plate 306, The removal of the sulfuric acid aqueous solution contained in the biogas or odor gas passing through the layer 324 is induced and only the gas component of the rising biogas or odor gas is introduced into the third eluentate 326 and the third gas- And a third upper washing chamber (310) passing through the third discharge pipe (328) and discharged to the third discharge pipe (304). delete delete delete delete

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