CN104492331A - Activated carbon feeding device and activated carbon feeding method - Google Patents

Abstract

The invention discloses an activated carbon dosing device and method, comprising a slurry tank, a jet pump and a gas-liquid separator, a silo connected to the inside of the slurry tank is provided outside the slurry tank, and the suction pump of the jet pump The air port is connected to the top of the carbon slurry tank through the air extraction pipe, the outlet pipe of the jet pump is inserted into the gas-liquid separator, and the outlet pipe extends to the lower part of the gas-liquid separator, and the gas-liquid separator is fixed on the carbon On the slurry tank, the bottom of the gas-liquid separator is located below the liquid level in the slurry tank, and the top of the gas-liquid separator is located above the top cover of the slurry tank, which communicates with the atmosphere.

Description

An activated carbon dosing device and method

technical field

The invention relates to an activated carbon dosing device, in particular to an activated carbon dosing device for powdered activated carbon.

Background technique

In order to improve the taste of water quality, at present, my country's tap water has successively adopted activated carbon adsorption technology to remove seasonal musty and other odors and odors, as well as to remove organic matter, surfactants, micro-pollutants in pesticides, algae, and industrial heavy metal pollution in water. wait. There are two main ways to treat tap water with activated carbon adsorption process. One is that tap water passes through the granular activated carbon adsorption pool. The disadvantage of this method is that the adsorption capacity of granular activated carbon decreases with time and needs to be replaced regularly; The corresponding amount of powdered activated carbon powder is continuously added to the activated carbon adsorption tank. The advantage of this method is that the dosage of activated carbon can be changed at any time according to the change of water quantity and water quality, and the effect of treating water quality is good. The disadvantage is that the powdered activated carbon is added. During the process, it is easy to raise dust and affect the health of on-site operators and environmental pollution.

The powdered activated carbon dosing device is generally composed of activated carbon silo, screw conveyor, carbon slurry tank, water supply pipe, agitator, and delivery pump. The working process is generally as follows: the carbon powder is firstly measured by the screw conveyor from the silo and then transported to the carbon slurry tank. The input of the carbon powder is synchronized with the water intake. A large amount of clean water is used to dissolve the carbon powder. Under the action of the agitator, the carbon powder is dissolved in the water and suspended. The delivery pump transports the activated carbon suspension from the carbon slurry tank to the activated carbon adsorption tank. When the carbon powder and water enter the carbon slurry tank at the same time, due to the tiny particles of powdered activated carbon, dust is extremely generated, causing the carbon powder to overflow from the stirring shaft of the carbon slurry tank, the carbon powder feeding port, etc., causing environmental pollution.

In order to solve the problem of carbon powder spillage, the measures taken in the prior art mainly contain the following:

One way is to install a filler absorber on the carbon slurry tank, spray tap water above the absorber to wet the filler, and the carbon powder will be absorbed by the filler when it overflows; one way is to directly transport the carbon powder into the carbon slurry tank by the screw conveyor Below the liquid level, reduce the diffusion of carbon powder above the liquid level; Another way is to install a dust filter on the carbon slurry tank. When the carbon powder and dissolved water enter the carbon slurry tank, the space in the tank decreases sharply, and the air in the tank needs to be discharged quickly, and the carbon powder suspended in the air in the carbon slurry tank will flow out of the customs with the exhaust air flow. This reason causes the existing These methods have failed to completely solve the problem of overflow pollution of carbon powder during the dosing process.

In order to solve the overflow problem of carbon powder, there is also a bag filter installed on the carbon slurry tank. Its working principle is that one end of the bag filter is connected to the carbon slurry tank, and the other end is connected to the exhaust fan. The air containing activated carbon dust particles in the tank enters the fan along the bag filter under the suction of the fan. When the gas passes through the bag filter, the fine particle dust is filtered by the filter bag and adsorbed on the inner wall of the filter bag for purification. The final gas is filtered by the bag, sucked into the fan, and then discharged into the atmosphere through the exhaust tube. Bag dust collectors are mostly used in industry to remove fine particles of dust in dry gases such as fly ash in boiler flue gas. When the dust attached to the filter bag continues to increase and the resistance rises to a certain value, it can be removed by blowing, shaking, etc. The dust adsorbed on the filter bag restores the filter bag to normal use. A very big disadvantage of applying the bag filter to the activated carbon dosing device is that the gas drawn by the fan from the carbon slurry tank contains a lot of water, which makes the activated carbon particles stick to the filter bag after becoming wet and is not easy to be removed. The gas resistance of the filter bag is getting bigger and bigger, and the filter bag must be replaced frequently. On the one hand, this method requires a fan to induce air, and on the other hand, it requires frequent replacement of the filter bag. In actual use, the operating cost is high and it is impractical.

Contents of the invention

In view of the above-mentioned defects in the prior art, the present invention provides an activated carbon dosing device with a simpler structure, which can completely solve the overflow of carbon powder.

The technical scheme that the present invention adopts is as follows:

An activated carbon dosing device, comprising a slurry tank, a jet pump and a gas-liquid separator, a hopper connected to the inside of the slurry tank is provided outside the slurry tank, and the suction port of the jet pump connects with the suction port through a suction pipe. The top of the carbon slurry tank is connected, and the outlet pipe of the jet pump is inserted into the gas-liquid separator to form a negative pressure in the carbon slurry tank. The gas-liquid separator is fixed on the carbon slurry tank, and the gas-liquid separator The bottom is located below the liquid level in the carbon slurry tank, and the top of the gas-liquid separator is located on the top cover of the carbon slurry tank, which communicates with the atmosphere.

An activated carbon dosing device, comprising a slurry tank, a jet pump and a gas-liquid separator, a hopper connected to the inside of the slurry tank is provided outside the slurry tank, and the suction port of the jet pump connects with the suction port through a suction pipe. The top of the carbon slurry tank is connected to form a negative pressure in the carbon slurry tank, and the outlet pipe of the jet pump is inserted into the gas-liquid separator, which is located outside the carbon slurry tank. The slurry tanks are connected through communication pipes, the bottom of the gas-liquid separator is located below the liquid level in the slurry tank, and the top of the gas-liquid separator is located on the top cover of the slurry tank, which communicates with the atmosphere.

There is packing inside the gas-liquid separator.

The slurry tank is provided with a stirring device for stirring the liquid inside.

The water inlet pipe of the jet pump is provided with a valve for controlling the water inlet.

The method for adding activated carbon to the activated carbon dosing device is as follows:

The carbon powder is metered from the silo by the screw conveyor and then transported to the carbon slurry tank. The water enters the carbon slurry tank through the jet pump, gas-liquid separator, gas-liquid separator and the connecting pipe of the carbon slurry tank in turn. The carbon powder input and The water inlet is synchronized. When the water flows through the jet pump, the inlet of the jet pump sucks air, and the air in the carbon slurry tank is sucked into the jet pump. The inside of the carbon slurry tank is in a state of slight negative pressure. They are sucked into the jet pump and fully mixed with water and then enter the gas-liquid separator. The air is separated from the water in the gas-liquid separator and then discharged. The carbon powder mixed with water flows through the gas-liquid separator and carbon slurry with the water. The connecting pipe of the tank enters the carbon slurry tank.

The beneficial effects of the present invention are:

In the present invention, since the suction port of the jet pump is connected with the carbon slurry tank, the outlet of the jet pump is connected with the gas-liquid separator, and the carbon slurry tank is connected with the gas-liquid separator, this structure changes the work of the existing activated carbon dosing device. process. On the one hand, the present invention forms a slight negative pressure in the carbon slurry tank through the suction of the jet pump, which solves the problem that the carbon powder in the carbon slurry tank overflows through the stirring rod, the carbon powder feeding port, etc.; The pump has dual functions of suction and mixing, so that the carbon powder entering the jet pump collides and mixes violently with the water flow, and the water molecules quickly soak the activated carbon particles to form a stable activated carbon suspension, which solves the problem of a small amount of carbon powder drawn from the carbon slurry tank. Dust problem again;

Secondly, the water needed to enter the jet pump to achieve the pumping effect is to use the dissolved water that enters the carbon slurry tank to dissolve the activated carbon, without consuming additional energy and water sources, which solves the need for fan suction to consume energy in the existing treatment methods Or the problem of water consumption by spraying water;

In addition, the outlet pipe of the jet pump is inserted into the gas-liquid separator, the upper port of the gas-liquid separator communicates with the atmosphere, and the lower discharge port of the gas-liquid separator is located below the liquid level in the carbon slurry tank. This structural design makes the jet pump The mixed liquid in the outlet pipe first flows into the gas-liquid separator, and the gas-liquid separation is realized in the gas-liquid separator. The gas in the mixed liquid floats up and is discharged into the atmosphere through the upper port of the gas-liquid separator; the mixed liquid contains carbon The water of the powder particles flows downward, and flows into the carbon slurry tank through the lower discharge port of the gas-liquid separator. The problem of clean emptying of the air extracted from the carbon slurry tank is solved, and at the same time, the carbon powder sucked into the jet pump re-enters the carbon slurry tank.

Compared with the prior art, the present invention has simpler structure, simpler operation and lower manufacturing cost, which is beneficial to popularization and application of the device.

In addition to being applicable to activated carbon, the present invention can also be applied to slurry preparation of powdery substances such as lime powder.

Description of drawings

Fig. 1 is the structural representation of embodiment 1 of the present invention;

Fig. 2 is the structural representation of embodiment 2 of the present invention;

In the figure, 1. feed bin, 2. conveyor, 3. carbon slurry tank, 4. transfer pump, 5. agitator, 6. exhaust pipe, 7. water inlet valve, 8. water inlet pipe, 9. jet pump, 10. Outlet pipe, 11. Gas-liquid separator, 12. Connecting pipe.

detailed description

Below by specific embodiment and in conjunction with accompanying drawing, the present invention will be further described:

Example 1

As shown in accompanying drawing 1, a kind of activated carbon dosing device, it packs the charcoal slurry tank 3, jet pump 8 and gas-liquid separator 11 with exhaust pipe 6, and jet pump suction port passes through exhaust tube 6 and carbon slurry tank 3 Connected, the jet pump outlet pipe 9 is inserted into the gas-liquid separator 11, the gas-liquid separator 11 is fixed on the carbon slurry tank 3, the bottom of the gas-liquid separator 11 is located below the liquid level in the carbon slurry tank 3, and the gas-liquid The top of the separator 11 is located on the top cover of the carbon slurry tank 3 .

The working process of this embodiment is:

When the liquid level in the carbon slurry tank 3 reaches a certain position and needs to be fed, the conveyor 3 and the water inlet valve 7 are opened at the same time, and the carbon powder is transported to the carbon slurry tank 3 after being metered by the silo 1 through the screw conveyor 3, and the clean water is delivered to the carbon slurry tank 3. The water inlet valve 7 and the water inlet pipe 8 enter the carbon slurry tank 3 through the jet pump 9 and the gas-liquid separator 11 in sequence. The air containing suspended carbon powder particles is sucked into the jet pump 9 through the suction pipe 6, and is violently mixed with the high-speed water flow in the jet pump 9 to form a mixed liquid that enters the gas-liquid separator 11, and the air floats in the gas-liquid separator 11 Discharged from the top of the gas-liquid separator 11, the carbon powder in the mixed liquid enters the carbon slurry tank 3 with the water flow. When the liquid level in the carbon slurry tank 3 reached a certain liquid level, the conveyor 3 was closed, and the water inlet valve 7 was closed after a few minutes of delay. And so on and on. During this process, the carbon slurry tank 3 is always in a slight negative pressure state, and no carbon powder particles enter the air. When there is carbon powder mixed slurry in the carbon slurry tank 3, the delivery pump 4 quantitatively transports the carbon powder mixed slurry to the activated carbon adsorption pool.

In the present invention, when the charcoal powder enters the charcoal pulp tank through the conveyor, the interior of the charcoal pulp tank 3 is always in a state of slight negative pressure, which better solves the problem of charcoal powder overflowing.

Other parts in this embodiment adopt the prior art, and will not be repeated here.

Example 2

As shown in accompanying drawing 2, present embodiment is basically the same as embodiment 1, and difference is, in the present embodiment, gas-liquid separator 11 is positioned at the outside of carbon slurry tank 3, and gas-liquid separator 11 communicates with carbon slurry tank 3 Tube 12 communicates with each other.

The working process of this embodiment is: when the liquid level in the carbon slurry tank 3 reaches a certain position and needs to be fed, the conveyor 3 and the water inlet valve 7 are opened at the same time, and the carbon powder is transported by the screw conveyor 3 after being measured by the silo 1 To the carbon slurry tank 3, the clean water enters the carbon slurry tank 3 through the water inlet valve 7 and the water inlet pipe 8 through the jet pump 9 and the gas-liquid separator 11 in turn. When the clean water flows through the jet pump 9, a jet suction is formed inside the jet pump 9 Function, the air containing suspended carbon powder particles in the carbon slurry tank 3 is sucked into the jet pump 9 through the suction pipe 6, and is violently mixed with the high-speed water flow in the jet pump 9 to form a mixed liquid that enters the gas-liquid separator 11. The air in the gas-liquid separator 11 floats up and is discharged from the top of the gas-liquid separator 11, and the carbon powder in the mixed liquid enters the carbon slurry tank 3 through the connecting pipe 12 along with the water flow.

Other parts in this embodiment are the same as those in Embodiment 1, and will not be repeated here.

Example 3

As shown in Figure 1 or 2, this embodiment is basically the same as Embodiment 1 or 2, the difference is that there is a filler inside the gas-liquid separator 11 in this embodiment, which can play a role in stabilizing the exhaust airflow and further cleaning the air role.

Although the specific implementation of the present invention has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the present invention. Those skilled in the art should understand that on the basis of the technical solution of the present invention, those skilled in the art do not need to pay creative work Various modifications or variations that can be made are still within the protection scope of the present invention.

Claims (10)

1. an activated charcoal adding apparatus, it is characterized in that: comprise serum pot, jet pump and a gas-liquid separator, the feed bin be connected with its inside is provided with in the outside of described serum pot, the top that the air entry of described jet pump starches tank by exhaust tube and charcoal is connected, charcoal is starched in tank and forms negative pressure, the outlet pipe of described jet pump is inserted in gas-liquid separator, described gas-liquid separator is fixed on charcoal slurry tank, the bottom of gas-liquid separator is positioned under charcoal slurry tank level, the top of gas-liquid separator is positioned on charcoal slurry top ends of cans, and it is communicated with air.

2. activated charcoal adding apparatus as claimed in claim 1, is characterized in that: there is filler described gas-liquid separator inside.

3. activated charcoal adding apparatus as claimed in claim 1, is characterized in that: be provided with the agitating device stirred its internal liquid in described serum pot.

4. activated charcoal adding apparatus as claimed in claim 1, is characterized in that: the water inlet pipe of described jet pump is provided with the valve that controls inflow.

5. the method utilizing activated charcoal adding apparatus as claimed in claim 1 to carry out active carbon to add, is characterized in that:

Powdered carbon is delivered to charcoal slurry tank after being measured by feed bin by conveying worm, water inlet is successively through jet pump, gas-liquid separator, enter charcoal after gas-liquid separator and charcoal starch the communicating pipe of tank and starch tank, powdered carbon input is synchronous with water inlet, feed water flow through jet pump time, jet pump import air-breathing, air in charcoal slurry tank is sucked in jet pump, charcoal slurry tank inside is in micro-vacuum state, suspend aerial powdered carbon together with air be together inhaled into fully mix with water in jet pump after enter gas-liquid separator, air realizes discharging with after being separated of water in gas-liquid separator, after the communicating pipe of tank starched by gas-liquid separator and charcoal, enter charcoal with current with the abundant mixed powdered carbon of water and starch tank.

6. an activated charcoal adding apparatus, it is characterized in that: comprise a serum pot, jet pump and gas-liquid separator, the feed bin be connected with its inside is provided with in the outside of described serum pot, the top that the air entry of described jet pump starches tank by exhaust tube and charcoal is connected, charcoal is starched in tank and forms negative pressure, the outlet pipe of described jet pump is inserted in gas-liquid separator, it is outside that described gas-liquid separator is positioned at charcoal slurry tank, gas-liquid separator and charcoal are starched tank and are connected by communicating pipe, the bottom of gas-liquid separator is positioned under charcoal slurry tank level, the top of gas-liquid separator is positioned on charcoal slurry top ends of cans, it is communicated with air.

7. activated charcoal adding apparatus as claimed in claim 6, is characterized in that: there is filler described gas-liquid separator inside.

8. activated charcoal adding apparatus as claimed in claim 6, is characterized in that: be provided with the agitating device stirred its internal liquid in described serum pot.

9. activated charcoal adding apparatus as claimed in claim 6, is characterized in that: the water inlet pipe of described jet pump is provided with the valve that controls inflow.

10. the method utilizing activated charcoal adding apparatus as claimed in claim 6 to carry out active carbon to add, is characterized in that:

Powdered carbon is delivered to charcoal slurry tank after being measured by feed bin by conveying worm, water inlet is successively through jet pump, gas-liquid separator, enter charcoal after gas-liquid separator and charcoal starch the communicating pipe of tank and starch tank, powdered carbon input is synchronous with water inlet, feed water flow through jet pump time, jet pump import air-breathing, air in charcoal slurry tank is sucked in jet pump, charcoal slurry tank inside is in micro-vacuum state, suspend aerial powdered carbon together with air be together inhaled into fully mix with water in jet pump after enter gas-liquid separator, air realizes discharging with after being separated of water in gas-liquid separator, after the communicating pipe of tank starched by gas-liquid separator and charcoal, enter charcoal with current with the abundant mixed powdered carbon of water and starch tank.