CN217732729U - Inorganic waste liquid flash-out processing apparatus - Google Patents
Inorganic waste liquid flash-out processing apparatus Download PDFInfo
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- CN217732729U CN217732729U CN202221030857.4U CN202221030857U CN217732729U CN 217732729 U CN217732729 U CN 217732729U CN 202221030857 U CN202221030857 U CN 202221030857U CN 217732729 U CN217732729 U CN 217732729U
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Abstract
The utility model belongs to the technical field of inorganic waste liquid experimental equipment, and provides an inorganic waste liquid flash-separating treatment device which is of an n-type or U-type structure, wherein a mixing chamber (1) capable of mixing fed air and waste liquid to form a micro granular gas-liquid mixture is arranged at the first section part of an opening end at one side of a system; according to the direction of a waste liquid treatment flow, a waste liquid flash-out treatment device (2) and a waste gas purification device (3) are sequentially arranged behind the mixing chamber (1); an electric heating plate capable of carrying out flash evaporation treatment on the gas-liquid mixture and forming waste gas is arranged in the waste liquid flash evaporation treatment device (2); the waste gas purification device (3) is provided with a multi-stage medium capable of adsorbing salt and harmful particles in waste gas. The utility model discloses the inorganic waste liquid of processing process does not have the waste liquid and discharges, and the treatment effeciency is high, does not need additionally to add in the processing procedure and handles the medicament, does not produce other new pollutants that are difficult for the processing, and its discarded object single-batch treatment cost is low.
Description
Technical Field
The utility model belongs to the technical field of inorganic waste liquid experimental facilities, a inorganic waste liquid flash analysis processing apparatus is related to.
Background
With the rapid development of scientific technology in China, laboratories of colleges, scientific research institutions and enterprises are continuously expanded, the types, the number and the scale of the laboratories are also continuously increased, and the pollution problem caused by laboratory wastes is caused.
Laboratory waste mainly includes: solid waste, waste liquids, exhaust gases, noise and vibration, electromagnetic radiation, and biological contaminants of viruses and pathogenic bacteria. Laboratory wastes in colleges and universities have high toxicity and high harmfulness, but the environmental protection department does not put the wastes into environmental protection detection items, and even if the wastes are put into the environmental protection items, the wastes are small in amount and easy to dilute by domestic sewage, so that the wastes are difficult to detect.
The laboratory waste liquid is mainly from laboratory research laboratories of various scientific research units and scientific research and teaching laboratories of higher colleges and universities. The laboratory waste liquid has the special properties, small amount, strong discontinuity, high harm and complex and variable components. Laboratory waste liquids can be divided into two main categories, organic and inorganic, according to the nature of the main pollutants contained in the waste liquid. The laboratory inorganic waste liquid mainly contains heavy metals, heavy metal complexes, acid and alkali, cyanides, sulfides, halogen ions, other inorganic ions and the like, so that the environment is greatly polluted if the laboratory inorganic waste liquid is not treated properly.
At present, inorganic waste liquid in a laboratory is generally treated by a chemical method, the process for treating the inorganic waste liquid by the chemical method is complex, the floor area is large, the consumption of consumables is large, pungent odor is emitted in the treatment process, a large amount of sludge solid slag and the like are generated at the treatment end and are difficult to treat, the efficiency of the whole chemical treatment equipment is low, the cost is high, and the odor emitted in the treatment process still has the defect of great environmental pollution.
Therefore, a method and equipment for treating inorganic waste liquid in a laboratory are urgently needed, the inorganic waste liquid in the laboratory can be efficiently treated, the treated gas meets the requirement of direct discharge of national standard requirements, the occupied area is small, the treatment efficiency is high, and the single-quantity treatment cost of waste is low.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of high inorganic waste liquid treatment cost, large occupied area, low treatment efficiency and environmental pollution caused by pungent odor emission in the treatment process in the prior art, the utility model provides an inorganic waste liquid flash-separation treatment device which can effectively treat laboratory inorganic waste liquid on the spot, so that the treated inorganic waste liquid meets the national emission standard; and the utility model has low cost and small occupied area for single-quantity treatment of the wastes.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides an inorganic waste liquid flash separation treatment device, which is of an n-shaped or U-shaped structure and comprises a mixing chamber, a waste liquid flash separation treatment device and a waste gas purification device;
the mixing chamber which can mix the fed air and the fed waste liquid to form a micro-granular gas-liquid mixture is arranged at the first section of the opening end at one side of the system; according to the waste liquid treatment flow direction, a waste liquid flash-out treatment device and a waste gas purification device are sequentially arranged behind the mixing chamber;
the waste liquid flash-separation treatment device is internally provided with an electric heating plate which can carry out flash-separation evaporation treatment on the gas-liquid mixture and form waste gas comprising air, salt and harmful particles;
the waste gas purification device is provided with a multi-stage medium capable of adsorbing salt and harmful particles in waste gas.
More preferably, the system for flash-separating and treating inorganic waste liquid containing salt further comprises a drain valve;
and recovering the residual waste liquid which is not completely treated by flash evaporation treatment of the waste liquid flash evaporation treatment device through a drain valve, and returning the residual waste liquid to the system for treatment.
More preferably, a plurality of air distribution pipes which are directly or indirectly connected with the air supply pipeline are arranged at the inlet position of the mixing chamber;
the shower nozzle of waste liquid spray gun stretches into in the mixing chamber, and it links to each other with the delivery pump through the conveyer pipe, can send into the mixing chamber with salt-containing waste liquid.
More preferably, a plurality of heating plates with corrugated structures are arranged in the waste liquid flash-out treatment device;
the heating plate height N satisfies: n = (0.6-2) × D1, where D1 is the diameter of the mixing chamber;
the distance M between two adjacent electric heating plates meets the following requirements: m = 5-30 mm.
More preferably, the exhaust gas purification apparatus includes: a water removal plate installed horizontally or obliquely in the exhaust gas purifying apparatus; the dewatering plate is of a grid structure.
More preferably, the width of the grid bars in the grid structure of the dewatering plate is M, the width of the gaps among the grid bars is C, and the depth of the gaps is F; one end of the gap is provided with an opening, the width of the opening is B, and the depth of the opening is E;
the relation among the relevant parameters corresponding to the grid bars, the gaps and the flaring satisfies the following conditions:
M＝5～20mm；B＝(1.5～3)*C；C＝(0.6～3)*M；E＝(0.2～1)*F。
more preferably, the exhaust gas purifying apparatus includes: a primary desalination device and a deep desalination device which are arranged in sequence; the primary desalting device is filled with fiber and polymer material media; the deep desalting device is filled with porous media.
By the foregoing, the technical scheme of the utility model can see out, the utility model discloses following beneficial effect has:
1. the system of the utility model adopts a U-shaped or n-shaped structure, the structure is compact, and the occupied area is small;
2. the utility model forms a gas-liquid mixture with very fine particles after the waste liquid is fully mixed with the air by the mixing chamber; the gas-liquid mixture enters a waste liquid flash separation treatment device 2, and is subjected to flash separation and evaporation to separate out salt in the waste liquid, so that waste gas containing air, water vapor and salt is formed; and then the waste gas enters a waste gas purification device for dewatering, primary desalting to remove salt in the waste gas, deep desalting to adsorb solid particles such as heavy metals in the waste gas, and finally the formed discharge only contains a mixture of air and water vapor which meets the national discharge standard and a small amount of solid salt captured by the desalting device, and no waste liquid is discharged. Therefore, the whole process of the utility model adopts a physical method to treat the waste liquid, and no waste liquid is discharged in the process of treating the inorganic waste liquid by using the device, so that the treatment efficiency is high; no extra treatment agent is needed in the treatment process, no other new pollutants which are not easy to treat are generated, and the single-amount treatment cost of the waste is low.
Drawings
Fig. 1 is a schematic structural diagram of a salt-containing inorganic waste liquid flash-separation treatment system according to an embodiment of the present invention;
fig. 2 is a schematic view of an arrangement structure of an air distribution pipe in a first embodiment of the present invention;
fig. 3 is a schematic structural view of a heating plate according to a first embodiment of the present invention;
fig. 4-1 is a schematic structural view of a dewatering plate according to a first embodiment of the present invention;
FIG. 4-2 isbase:Sub>A cross-sectional view A-A of FIG. 4-1;
fig. 5 is a schematic structural diagram of a salt-containing inorganic waste liquid flash-separation treatment system according to the second embodiment of the present invention.
Reference numerals:
a mixing chamber 1; an air distribution pipe 11; a waste liquid spray gun 12; a delivery pump 13; a waste liquid flash separation treatment device 2; a heating plate 21; an exhaust gas purification device 3; a water removal plate 31; a primary desalter 32; a deep desalination device 33; a fan 4 and a drain valve 5.
Detailed Description
The following description will explain embodiments of the present invention in further detail by referring to the drawings and examples. The following examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention.
In the present specification, terms of orientation or positional relationship such as up, down, left, right, inside, outside, front, rear, head, and tail are established based on the orientation or positional relationship shown in the drawings. The corresponding positional relationship may also vary depending on the drawings, and therefore, should not be construed as limiting the scope of protection.
In the present invention, the terms "mounted", "connected", "fixed", etc. should be understood in a broad sense, for example, they may be fixedly connected, detachably connected, integrally connected, or mechanically connected, the components may also be electrically connected or may communicate with each other, directly connected, or indirectly connected through an intermediate medium, or may be connected through two components, or may be in an interaction relationship between two components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The first embodiment is as follows:
the utility model provides an inorganic waste liquid dodges and analyzes processing apparatus, its structure is as shown in figure 1, and it wholly is n type structure, include: a mixing chamber 1, a waste liquid flash-out processing device 2 and a waste gas purification device 3 which are arranged in an n-type structure in sequence, and a fan 4 and a drain valve 5 which are arranged outside the n-type structure.
Air and waste liquid are sent into a mixing chamber 1 to be mixed to form a micro-granular gas-liquid mixture; the gas-liquid mixture enters a waste liquid flash separation treatment device 2 for flash separation and evaporation treatment, so that salt in the waste liquid is quickly separated; the waste gas after flash evaporation enters a waste gas purification device 3 for purification treatment to obtain purified gas meeting the emission standard, and the purified gas is discharged by a fan 4.
The residual gas-liquid mixture which is not completely treated by flash evaporation is recycled by the drain valve 5 and then returns to the system for treatment.
The functions and detailed structures of the components are as follows:
1. mixing chamber 1
The mixing chamber 1 is arranged at the first section of the opening end at one side of the n-type system, a plurality of air distribution pipes 11 are arranged at the inlet positions, and the air distribution pipes 11 are directly or indirectly connected with an air supply pipeline so as to send air sucked by negative pressure of a fan into the mixing chamber 1;
the spray head of the waste liquid spray gun 12 projects into the mixing chamber 1 and is connected to a transfer pump 13 via a transfer pipe, which is capable of feeding salt-containing waste liquid into the mixing chamber 1. The waste liquid spray gun 12 adopts a high-pressure atomizing nozzle, so that the waste liquid drops sprayed into the mixing chamber 1 are fine.
The air and the waste liquid fed into the mixing chamber 1 can be fully mixed in the mixing chamber 1 under the combined action of the wind power of the wind distribution pipe 11 and the pressure of the waste liquid spray gun 12 to form a micro-granular gas-liquid mixture.
The structure of the mixing chamber 1 is as follows:
to ensure that the waste liquid and air have sufficient time to mix, the height H4 of the mixing chamber 1 is designed to satisfy: h4= (0.8-2) × D1, where D1 is the diameter of the mixing chamber 1;
considering that the smaller the particles of the liquid, the shorter the time required for the evaporation process and the more sufficient the evaporation; the larger the amount of waste liquid to be treated, the smaller the overall energy consumption. In order to ensure that the waste liquid and the air can be fully mixed and the particles of the gas-liquid mixture mixed in the mixing chamber 1 are as small as possible, the extension lines of the outlet center lines of the plurality of uniformly arranged air distribution pipes 11 are tangent to the rotary cutting circle (as shown in fig. 2), and the diameter D2 of the rotary cutting circle, the diameter D1 of the mixing chamber 1 and the diameter D3 of the air distribution pipes satisfy the following relations:
D2＝(0.3～0.8)*D1；D3＝(0.01～0.1)*D2。
the setting of above-mentioned structure for the air that gets into mixing chamber 1 through air distribution pipe 11 can be sent into along rotary-cut circle tangential, and the air of confession can be along the circumference rotation of rotary-cut circle in mixing chamber 1, and in the time of the rotation, constantly will be drawn into and carry out the intensive mixing through waste liquid spray gun 12 from the waste liquid that the mixing chamber central direction sent into, makes gas-liquid mixture's granularity become tiny like this, is favorable to follow-up flash off process moisture evaporation, makes the evaporation more complete.
2. Waste liquid flash-out treatment device 2
Set up hot plate 21 in waste liquid flash separation processing apparatus 2, this hot plate 21 produces heat through electrical heating, and the heat is absorbed by entering into waste liquid flash separation processing apparatus 2 gas-liquid mixture, and the moisture among the gas-liquid mixture converts steam into fast, and the salt in the moisture can be separated out from it. The mixed gas obtained after flash separation contains air, water vapor and salt (hereinafter referred to as waste gas).
The heating plate 21 adopts the heating plate with the corrugated structure as shown in fig. 3, and the heating plate 21 adopts the corrugated structure, so that not only can the contact area between the gas-liquid mixture and the heating plate be increased and the gas evaporation speed be increased, but also the retention time of the gas-liquid mixture in the heating region can be increased, the liquid in the gas-liquid mixture can be fully evaporated, and the salt in the gas-liquid mixture can be fully separated out.
In order to guarantee the heating energy and the retention time, the height N of the heating plate 21 is designed to satisfy the following conditions: n = (0.6-2) × D1, where D1 is the diameter of the mixing chamber 1.
In order to guarantee the velocity of flow of gas-liquid mixture, this application designs that distance M between two adjacent electric heat plates satisfies: m =5 to 30mm. Such a flow cross section ensures that the gas-liquid mixture passes through the waste liquid flash separation treatment device 2 at a certain flow rate.
Since the waste liquid has complicated components, is acidic and basic, in order to protect the heating plate 21 and prevent the heating plate 21 from being corroded, the heating plate 21 is coated with a corrosion-resistant non-metallic material.
3. Exhaust gas purification apparatus 3
The waste gas that obtains after the processing of waste liquid flash-out processing apparatus 2 has contained air, vapor and salinity, and follow-up entering is carried out purification treatment in the exhaust gas purification device 3.
The exhaust gas purification apparatus 3 is provided with a water removal plate 31, a primary desalination apparatus 32, and a deep desalination apparatus 33 in this order.
Water removing plate (I) 31
In order to reduce the water content in the exhaust gas, a water trap plate 31 is installed in the exhaust gas purification apparatus 3. It can be mounted horizontally or obliquely. The dewatering plate 31 can enhance the disturbance of the air flow, fully separate the air, moisture and salt in the gas-liquid mixture, separate the incompletely evaporated larger moisture particles (also called as moisture microparticles) from the air, and return the air to the waste liquid flash-separation processing device 2 again for secondary flash-separation.
The structure of the dewatering plate 31 is shown in fig. 4-1 and 4-2, and is a grid structure, the width of grid bars is M, the width of gaps among the grid bars is C, and the depth of the gaps is F; one end of the gap is a flaring, the width of the flaring is B, and the depth of the flaring is E.
The relation among the relevant parameters corresponding to the grid bars, the gaps and the flaring satisfies the following conditions:
M＝5～20mm；B＝(1.5～3)*C；C＝(0.6～3)*M；E＝(0.2～1)*F
the above-mentioned dewatering plates 31 may be provided in plural, and as shown in fig. 1, an example is given in which three dewatering plates 31 are installed in the exhaust gas purifying device 3, and they are installed obliquely in the order of angle A1, angle A2, and angle A3, respectively, so that the moisture fine particles that cannot be gasified flow downstream from the higher end to the lower end, and are smoothly separated from the air flow. The angles A1, A2, and A3 satisfy the following relationships:
a1=0 to 70 degrees; a2= A1- (5 to 20); a3= A1- (15 to 30).
The multi-block dewatering plates 31 are arranged at different heights, so that multi-stage mixing and multi-stage dewatering are realized. An example in which three water-removing plates 31 are installed in the exhaust gas purifying apparatus 3 is given as fig. 1, wherein the first water-removing plate 31 has a height H1 from the mixing chamber 1, the second water-removing plate has a height H2 from the first water-removing plate, and the third water-removing plate has a height H3 from the second water-removing plate. Wherein the relationship between H1, H2 and H3 satisfies: h2= (1 to 2) × H1; h3= (1.5 to 2.5) × H1.
(II) Primary desalter 32
In order to remove harmful solid particles in the exhaust gas, a primary desalting device 32 is provided in the subsequent process of the water-removing plate 31. The primary desalination device 32 is mechanically filtered and filled with a filter medium such as fibers or polymeric materials.
(III) deep desalination apparatus 33
In order to remove harmful components such as heavy metals in the exhaust gas, a deep desalination device 33 is arranged in the subsequent process of the primary desalination device 32. The deep desalination device 33 is filled with a filter medium such as porous medium, for example, activated carbon, etc. by adsorption.
It can be seen that the waste obtained after the treatment by the waste liquid flash-out treatment device 2 enters the waste gas purification treatment device 3, and is sequentially subjected to the dewatering treatment by the dewatering plate 31 and the adsorption and purification treatment by the primary desalination device 32 and the deep desalination device 33, so that harmful solid particles, heavy metals and other harmful components in the waste gas are adsorbed, and finally, the purified gas meets the national emission standard. The above-described primary desalting device 32 and deep desalting device 33 may be provided in multiple stages as the case may be.
4. Fan 4
A fan 4 is provided behind the exhaust gas purification device 3, and the fan 4 can discharge the gas purified by the exhaust gas purification device 3.
5. Drain valve 5
A drain valve 5 is arranged at the bottom end of the whole system so as to drain the waste liquid remained after flash analysis. The waste liquid still remained after flash separation can be sent into the whole system again for continuous treatment after being recycled by the drain valve 5.
The working principle of the utility model is as follows:
firstly, air is sucked by a fan 4 (negative pressure), salt-containing waste liquid is respectively sent into a mixing chamber 1 by a conveying pump 13, and gas and liquid are mixed to form a micro-granular gas-liquid mixture.
Secondly, under the negative pressure of the fan 4, the micro-granular gas-liquid mixture enters the waste liquid flash separation treatment device 2 to evaporate the liquid. The heating plate 21 in the waste liquid flash separation processing device 2 adopts electric heating, adopts the corrugated structure heating plate to increase the contact area with the gas-liquid mixture for the gas-liquid mixture that gets into in the waste liquid flash separation processing device 2 is heated rapidly, and liquid wherein evaporates fast, and the salt in the liquid separates out from the liquid fast, therefore this process also is called flash separation processing procedure. The mixed gas obtained after the flash separation treatment contains air, water vapor and salt (hereinafter referred to as exhaust gas). Since the salt contained in the exhaust gas cannot be directly discharged, it is necessary to purify the exhaust gas and then discharge the salt. In order to monitor the flash analysis process, temperature and humidity measuring points are arranged at the outlet of the waste liquid flash analysis processing device 2.
Then, under the negative pressure of the fan 4, the exhaust gas enters the exhaust gas purification device 3, and in the exhaust gas purification device 3, the water removal, the primary desalination and the deep desalination treatment of the water removal plate 31, the primary desalination device 32 and the deep desalination device 33 are sequentially performed, so that purified gas meeting the emission standard is obtained.
Finally, the cleaned gas is discharged to the air by means of a fan 4.
The waste liquid still remained after flash separation can be sent into the whole system again for continuous treatment after being recycled by the drain valve 5.
Example two
The second embodiment provides another inorganic waste liquid flash-out processing device, the structure of which is shown in fig. 5, and the difference from the first embodiment is that: the system of the second embodiment is of a U-shaped structure as a whole. The rest is similar to the above embodiments and will not be described again.
While the principles of the invention have been described in detail in connection with the preferred embodiments thereof, it will be understood by those skilled in the art that the above-described embodiments are merely illustrative of exemplary implementations of the invention and are not limiting of the scope of the invention. The details in the embodiments do not constitute the limitations of the scope of the present invention, and any obvious changes such as equivalent transformation, simple replacement, etc. based on the technical solution of the present invention all fall within the protection scope of the present invention without departing from the spirit and scope of the present invention.
Claims (7)
1. An inorganic waste liquid flash-out processing apparatus, characterized in that:
the inorganic waste liquid flash analysis treatment device is of an n-shaped or U-shaped structure integrally and comprises a mixing chamber (1), a waste liquid flash analysis treatment device (2) and a waste gas purification device (3);
a mixing chamber (1) which can mix the fed air and the fed waste liquid to form a tiny granular gas-liquid mixture is arranged at the first section of the opening end at one side of the system; according to the direction of a waste liquid treatment process, a waste liquid flash-separation treatment device (2) and a waste gas purification device (3) are sequentially arranged behind the mixing chamber (1);
an electric heating plate capable of carrying out flash evaporation treatment on the gas-liquid mixture and forming waste gas comprising air, salt and harmful particles is arranged in the waste liquid flash evaporation treatment device (2);
and a multi-stage medium capable of adsorbing salt and harmful particles in the waste gas is arranged in the waste gas purification device (3).
2. The inorganic waste liquid flash separation treatment apparatus according to claim 1, characterized in that:
the inorganic waste liquid flash-separation treatment device also comprises a drain valve (5);
the residual waste liquid which is not completely treated by the flash evaporation treatment of the waste liquid flash evaporation treatment device (2) is recycled by the drain valve (5) and then returned to the system for treatment.
3. The inorganic waste liquid flash-out treatment device according to claim 2, wherein:
a plurality of air distribution pipes (11) which are directly or indirectly connected with an air supply pipeline are arranged at the inlet of the mixing chamber (1);
the spray head of the waste liquid spray gun (12) extends into the mixing chamber (1), is connected with the conveying pump (13) through a conveying pipe, and can convey salt-containing waste liquid into the mixing chamber (1).
4. The inorganic waste liquid flash separation treatment apparatus according to claim 1, characterized in that:
a plurality of heating plates (21) with corrugated structures are arranged in the waste liquid flash-out treatment device (2);
the height N of the heating plate (21) satisfies the following conditions: n = (0.6-2) × D1, where D1 is the diameter of the mixing chamber (1);
the distance M between two adjacent heating plates (21) satisfies: m = 5-30 mm.
5. The inorganic waste liquid flash separation treatment apparatus according to claim 1, characterized in that:
the exhaust gas purification device (3) includes: a water removal plate (31) installed horizontally or obliquely in the exhaust gas purification apparatus (3); the dewatering plate (31) is of a grid structure.
6. The inorganic waste liquid flash-out treatment device according to claim 5, wherein:
the width of grid bars in the grid structure of the water removing plate (31) is M, the width of gaps among the grid bars is C, and the depth of the gaps is F; one end of the gap is flared, the width of the flared opening is B, and the depth of the flared opening is E;
the relation among the relevant parameters corresponding to the grid bars, the gaps and the flaring satisfies the following conditions:
M＝5～20mm；B＝(1.5～3)*C；C＝(0.6～3)*M；E＝(0.2～1)*F。
7. the inorganic waste liquid flash separation treatment apparatus according to claim 1, characterized in that:
the exhaust gas purification device (3) includes: a primary desalination device (32) and a deep desalination device (33) arranged in series; the primary desalination unit (32) is filled with a fibrous, polymeric material medium; the deep desalination device (33) is filled with a porous medium.
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