CN109603489B - Formaldehyde purification device and method for treating gas - Google Patents

Formaldehyde purification device and method for treating gas Download PDF

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Publication number
CN109603489B
CN109603489B CN201910098284.5A CN201910098284A CN109603489B CN 109603489 B CN109603489 B CN 109603489B CN 201910098284 A CN201910098284 A CN 201910098284A CN 109603489 B CN109603489 B CN 109603489B
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reaction bottle
bottle
aeration
formaldehyde
defoaming
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CN109603489A (en
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龙绛雪
傅海燕
代智能
阳艾利
程慧艳
刘建福
金磊
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Xiamen University of Technology
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Xiamen University of Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77Liquid phase processes
    • B01D53/78Liquid phase processes with gas-liquid contact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/72Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10Inorganic adsorbents
    • B01D2253/102Carbon
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/30Sulfur compounds
    • B01D2257/302Sulfur oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/40Nitrogen compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/06Polluted air

Abstract

The invention relates to a formaldehyde purification device and a method for treating gas, wherein the formaldehyde purification device comprises an air pump and an assembled reaction bottle, the assembled reaction bottle comprises an aeration reaction bottle, a defoaming reaction bottle and an activated carbon adsorption bottle, a proteolytic formaldehyde adsorbent is filled in the aeration reaction bottle, a defoaming agent is filled in the defoaming reaction bottle, and granular activated carbon is filled in the activated carbon adsorption bottle; the aeration reaction bottle is provided with a pH meter to monitor the saturation degree of the proteolytic formaldehyde adsorbent for adsorbing formaldehyde. The formaldehyde purification device is used for sucking gas to be treated in small spaces such as a wardrobe and the like into the reaction bottle through the air pump, the purpose of removing formaldehyde and other harmful gases is achieved after series treatment of the adsorbent in the bottle and the like, the pH meter is used for judging the saturation degree of the adsorbent, the idle consumption is avoided, the formaldehyde purification device has a good formaldehyde removing effect, and is strong in pertinence and low in cost.

Description

Formaldehyde purification device and method for treating gas
Technical Field
The invention relates to the technical field of air purification, in particular to a formaldehyde purification device and a method for treating gas.
Background
Air purifier can provide clean safe air for people, and various clarifier purification principle are different, and the purification process also has the difference, has multiple different technique and medium. The common purification technologies of air purifiers in the market mainly comprise adsorption technology, high-efficiency filtration technology, catalysis, negative ion technology, plasma technology and the like, and the common materials mainly comprise active carbon, synthetic fibers, photocatalyst, HEAP high-efficiency materials and the like, which are obviously different in cost, service life, air purification efficiency and purification quality. According to the relevant evaluation results, the technology for purifying PM2.5 in the air by the air purifier is relatively mature, but the problems of poor formaldehyde removing function, high price, exaggeration effect and the like are prominent.
And current air purifier mainly designs to great space, and some rooms themselves are not big pollution, mainly because the binder in some newly-purchased furniture inside panel can continuously slow release formaldehyde, and then causes local enclosed spaces accumulational, high concentration pollution such as in the cabinet, drawer. If the whole room is directly purified, not only the polluted gas originally in the cabinet and the drawer can diffuse into the whole room to increase the treatment capacity, but also the treatment effect is greatly reduced. If these localized spaces are sprayed directly with aerosol, staining of the items within the cabinet can occur.
Disclosure of Invention
In order to solve the problems, the invention provides a formaldehyde purification device and a method for treating gas, wherein the formaldehyde purification device comprises an air pump and an assembled reaction bottle, gas to be treated in a small space such as a wardrobe and the like is sucked into the assembled reaction bottle through the air pump, and the purpose of removing formaldehyde and other harmful gases is achieved after treatment of an adsorbent, a defoaming agent and active carbon in the bottle, and the assembled reaction bottle is also provided with a readable pH meter for judging the saturation degree of the adsorbent for adsorbing formaldehyde.
The invention designs a formaldehyde purification device aiming at high-concentration formaldehyde gas accumulated in newly purchased furniture such as a wardrobe and a drawer, and the formaldehyde purification device can be drawn out for independent treatment operation, so that the loss of polluted gas in the use process of the furniture is avoided, and the treatment difficulty is increased. The purification device adopts a form of combining absorption and adsorption, and the adsorbent can be replaced by a user by self selection, and the proteolytic formaldehyde adsorbent is used for absorption treatment in the reaction bottle. The device is provided with a readable pH meter and is used for judging the adsorption saturation degree of the proteolytic formaldehyde adsorption material; the principle is that formaldehyde and amino groups in protein hydrolysate undergo condensation reaction to generate hydroxymethyl derivatives, thereby lowering the pH. Specifically, the initial pH of the proteolytic formaldehyde adsorbent is 7-8, and amino groups in the protein hydrolysate and formaldehyde can undergo a condensation reaction at room temperature to form a non-toxic and stable hydroxymethyl derivative, so that formaldehyde adsorption and removal are effectively realized. When the reaction liquid is acidic, the adsorption purification capacity of the reaction liquid is reduced, even the adsorption effect is lost, so that the device is provided with a readable pH meter to test the reaction liquid, and when the pH value is less than or equal to 5-6, the reaction reagent is indicated to be replaced in time.
Because the gas to be treated generates a large amount of bubbles after being aerated, a defoaming reaction bottle is arranged above the aeration reaction bottle, so that the stability of the air flow in the device can be improved.
The active carbon adsorption bottle is filled with granular active carbon to absorb residual formaldehyde, and simultaneously adsorb harmful gases such as benzene, toluene, nitrogen oxide and sulfur oxides, and simultaneously can remove water generated by formaldehyde adsorption reaction and water entrained by the defoaming agent, fully ensure the safety of treated gas, and improve the stability of the device in operation.
The device can also be used for liquid formaldehyde scavengers on the market, namely common liquid formaldehyde scavengers are loaded in the aeration reaction bottle, and the device has similar formaldehyde removal effect.
In order to solve the technical problem, the invention adopts the following scheme:
a formaldehyde purification device comprises an air pump and an assembled reaction bottle, wherein the assembled reaction bottle comprises an aeration reaction bottle, a defoaming reaction bottle and an active carbon adsorption bottle, a proteolytic formaldehyde adsorbent is filled in the aeration reaction bottle, a defoaming agent is filled in the defoaming reaction bottle, and granular active carbon is filled in the active carbon adsorption bottle; the air pump is connected with the aeration reaction bottle through a pipeline, the pipeline extends into the proteolysis type formaldehyde adsorbent, and the tail end of the pipeline is connected with an aeration head; the aeration reaction bottle is provided with a pH meter to monitor the saturation degree of the proteolytic formaldehyde adsorbent for adsorbing formaldehyde; the bottom of the aeration reaction bottle is sealed, the top of the aeration reaction bottle is detachably connected with the bottom of the defoaming reaction bottle, and the top of the defoaming reaction bottle is detachably connected with the bottom of the activated carbon adsorption bottle, so that the air to be purified enters the aeration reaction bottle from the air pump and is discharged after being treated by the defoaming reaction bottle and the activated carbon adsorption bottle.
Further, the air pump is a small air pump, and the air pump is connected with the aeration reaction bottle through a rubber pipeline.
Further, the defoaming agent is solid defoaming agent particles, or a liquid defoaming agent is adsorbed on sponge and filled in the defoaming reaction bottle.
Furthermore, the top of the activated carbon adsorption bottle is connected with a second aeration reaction bottle to enhance the removal effect on formaldehyde.
Further, the aeration reaction bottle, the defoaming reaction bottle and the activated carbon adsorption bottle are cylindrical, the diameter of the bottom of the defoaming reaction bottle is smaller than that of the top of the aeration reaction bottle, and the diameter of the bottom of the activated carbon adsorption bottle is smaller than that of the top of the defoaming reaction bottle.
Further, the aeration reaction bottle top is connected through first go-between detachably the bottom of defoaming reaction bottle, the defoaming reaction bottle top is connected through second go-between detachably the bottom of active carbon adsorption bottle, the first reaction bottle top cap is connected through third go-between detachably in the active carbon adsorption bottle top, second aeration reaction bottle top is connected through fourth go-between detachably second reaction bottle top cap, first go-between the second go-between the third go-between with be equipped with the through-hole on the fourth go-between.
Furthermore, the first connecting ring, the second connecting ring, the third connecting ring and the fourth connecting ring all comprise circular connecting bodies, through holes which are symmetrically distributed are formed in the connecting bodies, the upper end and the lower end of each connecting body are respectively connected with a first annular groove and a second annular groove, and the first annular groove and the second annular groove are used for detachably connecting adjacent reaction bottles or adjacent reaction bottles and reaction bottle top covers together in a clamping mode.
Furthermore, a first through hole is formed in the upper end face of the first reaction bottle top cover or the second reaction bottle top cover, and a guide pipe is inserted into the first through hole to guide out the airflow.
The invention also provides a method for treating gas by using the formaldehyde purification device, which comprises the following steps: the method comprises the steps of sucking gas to be purified into an assembled reaction bottle through an air pump, enabling formaldehyde and amino in protein hydrolysate to perform condensation reaction, discharging the gas to be purified through an aeration head, enabling the gas to be in full dynamic contact with a protein hydrolysis type formaldehyde adsorbent in the aeration reaction bottle, enabling the formaldehyde and the amino in the protein hydrolysis type formaldehyde adsorbent to perform condensation reaction and be removed, enabling the gas to enter a defoaming reaction bottle for defoaming, and further adsorbing harmful gas or water through an activated carbon adsorption bottle and then discharging the gas.
Further, the initial pH value of the proteolytic formaldehyde adsorbent in the aeration reaction bottle is 7-8, and when the pH value is less than or equal to 5-6, the proteolytic formaldehyde adsorbent in the aeration reaction bottle is indicated to be replaced in time.
Has the advantages that:
the invention is designed aiming at small-sized closed space and has strong pertinence; compared with the traditional air purifier, the air purifier has the advantages of shorter treatment time, obvious effect and low cost. The centralized treatment mode of the reaction bottles is adopted, and the target property is strong. The assembled reaction bottle is combined with the adsorption through aeration, the reagent is in full dynamic contact with the formaldehyde, the reaction is full, the formaldehyde removing speed is high, and the efficiency is high. The whole device has the advantages of small volume and convenient carrying and use, can quickly remove formaldehyde in locally closed small spaces such as a wardrobe and a drawer, and can also remove other harmful gases.
Moreover, the assembled reaction bottle is adopted, the reaction bottle can be disassembled for use, and reagents in the reaction bottle can adopt reagents which are universal in the market, and can be replaced in time according to needs when in use, so that the cost is saved.
And finally, the aeration reaction bottle is provided with a pH meter to monitor the saturation degree of the proteolytic formaldehyde adsorbent for adsorbing formaldehyde, so that the idle consumption is avoided, and the electric energy is saved.
Drawings
FIG. 1 is a schematic view of a formaldehyde purification apparatus provided in example 1 of the present invention;
FIG. 2 is a front view of an aeration reaction flask provided in example 1 of the present invention;
FIG. 3 is a top view of an aeration reaction tank provided in example 1 of the present invention;
FIG. 4 is a front view of a defoaming reaction flask provided in example 1 of the present invention;
FIG. 5 is a top view of a defoaming reaction flask according to example 1 of the present invention;
fig. 6 is a front view of a first connection ring provided in embodiment 1 of the present invention;
fig. 7 is a top view of a first connection ring provided in embodiment 1 of the present invention;
FIG. 8 is a front view of a top cover of a first reaction flask, which is provided in example 1 of the present invention;
FIG. 9 is a schematic structural diagram of a deep formaldehyde removal apparatus provided in example 5 of the present invention.
Detailed Description
The present invention will be further described with reference to the following drawings and examples, which may be in various forms and should not be construed as being limited to the description set forth herein. Like reference numerals refer to like elements throughout, and similar reference numerals refer to similar elements.
Example 1:
referring to fig. 1, a formaldehyde purification apparatus includes a small-sized air pump 1, an aeration reaction flask 2, a first connection ring 31, a defoaming reaction flask 4, a second connection ring 32, an activated carbon adsorption flask 5, a third connection ring 33, and a first reaction flask top cap 6. The small air pump 1 is connected with a gas access pipe on the aeration reaction bottle 2 through a rubber pipe 8, and gas to be treated is sucked into the rubber pipe 8 and discharged through an aeration head 7 to be fully and dynamically contacted with the proteolytic formaldehyde adsorbent in the aeration reaction bottle 2 for full reaction. The aeration reactor 2 is equipped with a pH meter (not shown in fig. 1) to monitor the degree of saturation of the proteolytic formaldehyde adsorbent for formaldehyde adsorption. The initial pH value of the proteolytic formaldehyde adsorbent is 7-8, and when the pH value is less than or equal to 5-6, the proteolytic formaldehyde adsorbent in the aeration reaction bottle 2 is indicated to be replaced in time.
Fig. 2-fig. 3 are schematic structural diagrams of the aeration reaction bottle 2, and fig. 4-fig. 5 are schematic structural diagrams of the defoaming reaction bottle 4, and it can be seen that the aeration reaction bottle 2 and the defoaming reaction bottle 4 are both cylindrical, wherein the bottom of the aeration reaction bottle 2 is sealed, the rubber tube 8 extends into the aeration reaction bottle 2, and the tail end is connected with the aeration head 7 and is located inside the proteolysis type formaldehyde adsorbent. The top of the aeration reaction bottle 2 is provided with a convex ring 21, and the convex ring 21 is clamped with the first connecting ring 31 to realize the detachable connection of the defoaming reaction bottle 4. The aeration reaction flask 2 and the defoaming reaction flask 4 are preferably glass bottles or plastic bottles.
The defoaming reaction bottle 4 is filled with granular solid defoaming agent. The opening in 4 bottoms of defoaming reaction bottle, its diameter is less than the diameter of the top bulge loop of aeration reaction bottle 2, and the first connecting ring 31 of 4 bottom circumference block of defoaming reaction bottle, 4 tops of defoaming reaction bottle are equipped with bulge loop 41, through bulge loop 41 block second connecting ring 32 to realize detachably connecting active carbon adsorption bottle 5. Activated carbon adsorption bottle 5 is the same with defoaming reaction bottle 4's structure, and its inside packing granule active carbon, bottom opening, diameter are less than the diameter of the top bulge loop of defoaming reaction bottle 4, 5 bottom circumference block second go-between 32 of activated carbon adsorption bottle, and 5 tops of activated carbon adsorption bottle are equipped with bulge loop 51, through bulge loop 51 block third go-between 33 to realize detachably connecting first reaction bottle top cap 6.
The first connection ring 31, the second connection ring 32 and the third connection ring 33 have the same structure, referring to fig. 6-7, taking the first connection ring 31 as an example, it includes a circular connection body 30, through holes 300 are symmetrically distributed on the connection body 30, the upper end and the lower end of the connection body are respectively connected with a first annular groove 301 and a second annular groove 302, the second annular groove 302 is clamped on the top convex ring 21 of the aeration reaction bottle 2, and the first annular groove 301 is clamped on the bottom circumference of the defoaming reaction bottle 4. The connection mode between the defoaming reaction bottle 4 and the activated carbon adsorption bottle 5 is analogized.
The concrete structure of the first reaction bottle top cover 6 is shown in fig. 8, the bottom of the first reaction bottle top cover 6 is provided with a convex ring 61 for clamping the third connecting ring 33 matched with the convex ring, the upper end surface of the first reaction bottle top cover is provided with a first through hole 62, a conduit 63 is inserted into the first through hole 62 to lead out the air flow, so as to form a through air path for the air to be purified to enter the aeration reaction bottle 2 from the small air pump 1, pass through the defoaming reaction bottle 4 and the activated carbon adsorption bottle 5, reach the first reaction bottle top cover 6 and be discharged.
Example 2:
a formaldehyde purification device comprises a small-sized air pump 1, an aeration reaction bottle 2, a first connecting ring 31, a defoaming reaction bottle 4, a second connecting ring 32, an activated carbon adsorption bottle 5, a third connecting ring 33 and a first reaction bottle top cover 6. The small air pump 1 is connected with a gas access pipe on the aeration reaction bottle 2 through a rubber pipe 8, and gas to be treated is sucked into the rubber pipe 8 and discharged through an aeration head 7 to be fully and dynamically contacted with the proteolytic formaldehyde adsorbent in the aeration reaction bottle 2 for full reaction. The aeration reaction flask 2 is equipped with a pH meter to monitor the degree of saturation of the proteolytic formaldehyde adsorbent for formaldehyde adsorption.
Aeration reaction bottle 2 passes through threaded connection mode and links to each other with defoaming reaction bottle 4, and the junction is equipped with the filter screen, and the intussuseption of defoaming reaction bottle 4 is filled and is adsorbed the sponge that has absorption liquid type defoaming agent, and liquid type defoaming agent can be the mixed solution after solid defoaming agent dissolves, also can be the solution after liquid defoaming agent dilutes, and defoaming reaction bottle 4 bottom openings, filter screen hold the sponge. The top of the defoaming reaction bottle 4 is connected with the activated carbon adsorption bottle 5 in a threaded connection mode, and a filter screen is arranged at the joint to receive activated carbon particles in the activated carbon adsorption bottle 5. The active carbon adsorption bottle 5 is connected with the first reaction bottle top cover 6 through a threaded connection mode, a first through hole is formed in the upper end face of the first reaction bottle top cover 6, a conduit is inserted into the first through hole to guide air flow out, so that air to be purified enters the aeration reaction bottle 2 from the small air pump 1 and reaches the first reaction bottle top cover 6 through the defoaming reaction bottle 4, and the air is discharged to penetrate through the air path.
Example 3:
the embodiment is improved on the basis of the embodiment 1, the top of the activated carbon adsorption bottle 5 is detachably connected with a second aeration reaction bottle through a connecting ring, the bottom of the second aeration reaction bottle is opened, and the top is detachably connected with a top cover 6 of the first reaction bottle through a connecting ring. Namely, the number of the aeration reaction bottles is increased on the basis of the embodiment 1 so as to meet the requirement of purifying highly polluted gas and enhance the formaldehyde removal effect.
Example 4:
a formaldehyde purification device comprises a small-sized air pump 1, an aeration reaction bottle 2, a first connecting ring 31, a defoaming reaction bottle 4, a second connecting ring 32, an activated carbon adsorption bottle 5, a third connecting ring 33 and a first reaction bottle top cover 6. The small air pump 1 is connected with a gas access pipe on the aeration reaction bottle 2 through a rubber pipe 8, and gas to be treated is sucked into the rubber pipe 8 and discharged through an aeration head 7 to be fully and dynamically contacted with the proteolytic formaldehyde adsorbent in the aeration reaction bottle 2 for full reaction. The aeration reaction flask 2 is equipped with a pH meter to monitor the degree of saturation of the proteolytic formaldehyde adsorbent for formaldehyde adsorption.
The aeration reaction bottle 2 is cylindrical with the same width from top to bottom, the defoaming reaction bottle 4 and the activated carbon adsorption bottle 5 are cylindrical with the same width from top to bottom, the bottom of the aeration reaction bottle 2 is sealed, the rubber pipe 8 extends into the aeration reaction bottle 2, and the tail end of the rubber pipe is connected with the aeration head 7 and is positioned in the proteolysis type formaldehyde adsorbent. The top of the aeration reaction bottle 2 is provided with a convex ring 21, and the convex ring 21 is clamped with the first connecting ring 31 to realize the detachable connection of the defoaming reaction bottle 4.
The defoaming reaction bottle 4 is filled with sponge adsorbing a liquid type defoaming agent, and the liquid type defoaming agent can be a mixed solution formed by dissolving a solid defoaming agent or a solution formed by diluting a liquid type defoaming agent so as to play a defoaming role. The opening in 4 bottoms of defoaming reaction bottle, its diameter is less than the diameter of the top bulge loop of aeration reaction bottle 2, and the first connecting ring 31 of 4 bottom circumference block of defoaming reaction bottle, 4 tops of defoaming reaction bottle are equipped with bulge loop 41, through bulge loop 41 block second connecting ring 32 to realize detachably connecting active carbon adsorption bottle 5.
The activated carbon adsorption bottle 5 is filled with granular activated carbon to absorb residual formaldehyde and adsorb harmful gases such as benzene, toluene, nitrogen oxides, sulfur oxides and the like, so that the safety of the treated gas is fully ensured. 5 bottom openings of active carbon adsorption bottle, its diameter is less than the diameter of the top bulge loop of defoaming reaction bottle 4, 5 bottom circumference block second go-between 32 of active carbon adsorption bottle, and 5 tops of active carbon adsorption bottle are equipped with bulge loop 51, through the third go-between 33 of bulge loop 51 block to realize detachably connecting first reaction bottle top cap 6.
The first connecting ring 31, the second connecting ring 32 and the third connecting ring 33 have the same structure, taking the first connecting ring 31 as an example, the first connecting ring includes a circular connecting body 30, through holes 300 are symmetrically distributed on the connecting body 30, the upper end and the lower end of the connecting body are respectively connected with a first annular groove 301 and a second annular groove 302, the second annular groove 302 is clamped on the convex ring 21 at the top of the aeration reaction bottle 2 matched with the second annular groove 302, and the first annular groove 301 is clamped on the bottom circumference of the defoaming reaction bottle 4 matched with the first annular groove.
The bottom of the first reaction bottle top cover 6 is provided with a convex ring 61 for engaging with the third connecting ring 33, the upper end surface is provided with a first through hole 62, a conduit 63 is inserted into the first through hole 62 to guide the air flow out, so as to form a through air path for the air to be purified to enter the aeration reaction bottle 2 from the small air pump 1, pass through the defoaming reaction bottle 4 and reach the first reaction bottle top cover 6 and be discharged.
Example 5
Referring to fig. 9, a device for deeply removing formaldehyde comprises a small air pump 1, a first-stage assembled reaction flask (an aeration reaction flask 2, a first connection ring 31, a defoaming reaction flask 4, a second connection ring 32, an activated carbon adsorption flask 5, a third connection ring 33, a first reaction flask top cover 6, an aeration head 7, a pipeline 8), a three-way valve 9, a second pipeline 63, and a second-stage assembled reaction flask (a second aeration head 10, a second aeration reaction flask 11, a second reaction flask top cover 13, and a fourth connection ring 34). The small air pump 1 is connected with a gas access pipe on the aeration reaction bottle 2 through a pipeline 8, the pipeline 8 is a rubber pipe, and gas to be treated is sucked into the pipeline 8 and discharged through the aeration head 7 to be fully and dynamically contacted with the proteolysis type formaldehyde adsorbent in the aeration reaction bottle 2 for full reaction. The aeration reactor 2 was equipped with a pH meter (not shown in fig. 9) to monitor the degree of saturation of the proteolytic formaldehyde adsorbent with formaldehyde.
The aeration reaction bottle 2 and the defoaming reaction bottle 4 are both cylindrical, wherein the bottom of the aeration reaction bottle 2 is sealed, the pipeline 8 extends into the aeration reaction bottle 2, and the tail end is connected with the aeration head 7 and is positioned inside the proteolysis type formaldehyde adsorbent. The top of the aeration reaction bottle 2 is provided with a convex ring 21, and the convex ring 21 is clamped with the first connecting ring 31 to realize the detachable connection of the defoaming reaction bottle 4. The second aeration reaction bottle 11 has the same structure as the aeration reaction bottle 2.
The defoaming reaction bottle 4 is filled with granular solid defoaming agent. The opening in 4 bottoms of defoaming reaction bottle, its diameter is less than the diameter of the top bulge loop of aeration reaction bottle 2, and the first connecting ring 31 of 4 bottom circumference block of defoaming reaction bottle, 4 tops of defoaming reaction bottle are equipped with bulge loop 41, through bulge loop 41 block second connecting ring 32 to realize detachably connecting active carbon adsorption bottle 5. Activated carbon adsorption bottle 5 is the same with defoaming reaction bottle 4's structure, and its inside packing granule active carbon, bottom opening, diameter are less than the diameter of the top bulge loop of defoaming reaction bottle 4, 5 bottom circumference block second go-between 32 of activated carbon adsorption bottle, and 5 tops of activated carbon adsorption bottle are equipped with bulge loop 51, through bulge loop 51 block third go-between 33 to realize detachably connecting first reaction bottle top cap 6.
The first connecting ring 31, the second connecting ring 32, the third connecting ring 33 and the fourth connecting ring 34 have the same structure, taking the first connecting ring 31 as an example, the first connecting ring includes a circular connecting body 30, through holes 300 are symmetrically distributed on the connecting body 30, the upper end and the lower end of the connecting body are respectively connected with a first annular groove 301 and a second annular groove 302, the second annular groove 302 is clamped on the convex ring 21 at the top of the aeration reaction bottle 2 matched with the second annular groove 302, and the first annular groove 301 is clamped on the bottom circumference of the defoaming reaction bottle 4 matched with the first annular groove. The connection mode between the defoaming reaction bottle 4 and the activated carbon adsorption bottle 5 is analogized.
The bottom of the first reaction bottle top cover 6 is provided with a convex ring 61 for clamping the third connecting ring 33 matched with the convex ring, the upper end surface is provided with a first through hole 62, and a second pipeline 63 is inserted into the first through hole 62 to lead out the air flow.
The second pipeline 63 is connected to the three-way valve 9, and the gas treated by the first-stage assembled reaction flask is selectively introduced into the second-stage assembled reaction flask or directly discharged through the three-way valve 9. The two-stage assembled reaction bottle comprises a second aeration reaction bottle 11, the second pipeline 63 is a rubber pipe, the two pipelines are divided into two paths after being connected with the three-way valve 9, the gas is directly led out all the way, the other path of the gas extends into the second aeration reaction bottle 11, the tail end of the gas is connected with a second aeration head 10, and the two paths of the gas are positioned inside the proteolysis type formaldehyde adsorbent filled in the second aeration reaction bottle 11. The bottom of the second aeration reaction bottle 11 is sealed, the top of the second aeration reaction bottle is detachably connected with a second reaction bottle top cover 13 through a fourth connecting ring 34, and the structure of the second reaction bottle top cover 13 is the same as that of the first reaction bottle top cover 6.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims (6)

1. A formaldehyde purification device comprises an air pump and an assembled reaction bottle, wherein the assembled reaction bottle comprises an aeration reaction bottle, a defoaming reaction bottle, an activated carbon adsorption bottle and a second aeration reaction bottle, proteolytic formaldehyde adsorbents are filled in the aeration reaction bottle and the second aeration reaction bottle, a defoaming agent is filled in the defoaming reaction bottle, and granular activated carbon is filled in the activated carbon adsorption bottle; the air pump is connected with the aeration reaction bottle through a pipeline, the pipeline extends into the proteolysis type formaldehyde adsorbent, and the tail end of the pipeline is connected with an aeration head; the aeration reaction bottle is provided with a pH meter to monitor the saturation degree of the proteolytic formaldehyde adsorbent for adsorbing formaldehyde; the bottom of the aeration reaction bottle is sealed, the top of the aeration reaction bottle is detachably connected with the bottom of the defoaming reaction bottle, and the top of the defoaming reaction bottle is detachably connected with the bottom of the activated carbon adsorption bottle, so that air to be purified enters the aeration reaction bottle from the air pump and is discharged after being sequentially treated by the defoaming reaction bottle and the activated carbon adsorption bottle; the aeration reaction bottle, the defoaming reaction bottle and the active carbon adsorption bottle are cylindrical, the diameter of the bottom of the defoaming reaction bottle is smaller than that of the top of the aeration reaction bottle, and the diameter of the bottom of the active carbon adsorption bottle is smaller than that of the top of the defoaming reaction bottle; the top of the aeration reaction bottle is detachably connected with the bottom of the defoaming reaction bottle through a first connecting ring, the top of the defoaming reaction bottle is detachably connected with the bottom of the activated carbon adsorption bottle through a second connecting ring, the top of the activated carbon adsorption bottle is detachably connected with a second aeration reaction bottle through a third connecting ring, the bottom of the second aeration reaction bottle is provided with an opening, the top of the second aeration reaction bottle is detachably connected with a top cover of the first reaction bottle through a fourth connecting ring, and the first connecting ring, the second connecting ring, the third connecting ring and the fourth connecting ring are provided with through holes; the first connecting ring, the second connecting ring, the third connecting ring and the fourth connecting ring all comprise circular connecting bodies, through holes which are symmetrically distributed are formed in the connecting bodies, the upper end and the lower end of each connecting body are respectively connected with a first annular groove and a second annular groove, and the first annular grooves and the second annular grooves are used for detachably connecting adjacent reaction bottles or adjacent reaction bottles and reaction bottle top covers together in a clamping mode.
2. The formaldehyde purification device according to claim 1, wherein: the air pump is a small air pump and is connected with the aeration reaction bottle through a rubber pipeline.
3. The formaldehyde purification device according to claim 1, wherein: the defoaming agent is solid defoaming agent particles, or a liquid defoaming agent is adsorbed on sponge and filled in the defoaming reaction bottle.
4. The formaldehyde purification device according to claim 1, wherein: the upper end face of the first reaction bottle top cover or the second reaction bottle top cover is provided with a first through hole, and a conduit is inserted into the first through hole to guide out the airflow.
5. A method for gas treatment using the formaldehyde purification device according to any one of claims 1 to 4, characterized in that: and (2) sucking gas to be purified into the assembled reaction bottle through an air pump, enabling formaldehyde to perform condensation reaction with amino in protein hydrolysate, discharging the gas to be purified through an aeration head, enabling the gas to be fully and dynamically contacted with the protein hydrolysis type formaldehyde adsorbent in the aeration reaction bottle and the second aeration reaction bottle, enabling the formaldehyde to perform condensation reaction with the amino in the protein hydrolysis type formaldehyde adsorbent to be removed, then enabling the gas to enter a defoaming reaction bottle for defoaming, and further adsorbing harmful gas or water through an activated carbon adsorption bottle and then discharging.
6. The method of claim 5, wherein the formaldehyde purification device is used for gas treatment, and the method comprises the following steps: the initial pH of the proteolytic formaldehyde adsorbent in the aeration reaction bottle is =7-8, and when the pH value =5-6, the change of the proteolytic formaldehyde adsorbent in the aeration reaction bottle is prompted in time.
CN201910098284.5A 2019-01-31 2019-01-31 Formaldehyde purification device and method for treating gas Active CN109603489B (en)

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Publication number Priority date Publication date Assignee Title
JP2002336842A (en) * 2001-05-15 2002-11-26 Sumitomo Metal Mining Co Ltd Apparatus for purifying volatile contaminant
CN103727599A (en) * 2014-01-08 2014-04-16 波鹰(厦门)科技有限公司 Air cleaning device and method for removing formaldehyde and PM2.5
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