TWM616336U - Fly ash washing treatment system - Google Patents

Abstract

This creation provides a fly ash washing treatment system, including a fly ash storage tank, a dissolving stirring tank, a washing tank, a temporary storage tank and a filter press dehydrator. The fly ash storage tank is used to store fly ash; the fly ash is transported to the dissolving and mixing tank through the fly ash screw conveyor, and water is supplied to the dissolving and mixing tank through the tap water tank, so that the fly ash and water are dissolved and stirred; the dissolved fly ash is transported to The water washing tank makes the chlorine and heavy metals in the fly ash dissolve into the water; the fly ash dissolved in the water is transported to the temporary storage tank to continue to be dissolved and stirred; the temporary storage tank transfer pump is used to transport the fly ash dissolved in the water to the filter press The dehydrator performs solid-liquid separation to produce filter cake and deliver the filtrate to the filtrate storage tank. In this way, the fly ash washing treatment system of this invention can dissolve the harmful substances in the fly ash, so that the product after the washing process is more stable for reuse.

Description

Fly ash washing treatment system

This creation is about a fly ash washing treatment system, especially a fly ash washing treatment system that is used to process fly ash to make the output homogeneous and stable for reuse.

With the growth of industries and changes in life, the amount of waste generated by factories, homes, offices and other places has greatly increased, which has become the main cause of environmental degradation. Therefore, waste reduction and resource recycling are trends. Traditionally, combustible household waste and business waste are treated by incineration. Incineration of domestic waste has the advantages of large amount of treatment, volume reduction, reasonable cost, and recovery of heat energy into electricity. Most advanced countries use incineration for waste treatment. However, Waste incineration has the problem of generating fly ash.

The fly ash generated by the incineration of domestic waste and the fly ash generated by the incineration of hazardous waste are classified as hazardous waste. The current treatment methods for such hazardous waste include safe landfill, but the cost is relatively high. In Taiwan, 96% of waste is incinerated, and the 24 incineration plants in Taiwan produce about 200,000 metric tons of hazardous fly ash each year. The generated fly ash is buried in the waste final disposal site for treatment, because the incineration ash contains cement raw materials. The necessary CaO, SiO ₂ , Al ₂ O ₃ and Fe ₂ O ₃ can be fully recovered as raw materials for cement heating treatment. In recent years, it has been proven that fly ash can be used as part of the cement production technology, and fly ash can be recovered for cement production. In addition, the fly ash contains high concentration of chlorine in the form of NaCl, etc., in order to avoid adverse effects on the stable operation of the kiln and the quality of cement, it is necessary to treat the high concentration of chlorine.

In view of this, the creators have invested a lot of energy and spirit in research and development, and continue to make breakthroughs and innovations in this field, hoping to solve the shortcomings of conventional use with novel technical means, not only to bring better products to the society, but also to promote the development of the industry. .

In view of the above requirements, the purpose of this creation is to provide a fly ash washing treatment system that can dissolve harmful substances in the fly ash, so that the product after the washing process is more homogeneous and stable for safe reuse. Secondly, the original fly ash washing treatment system can save the amount of water used to reduce the generation of waste water and shorten the operation time of the entire process.

To achieve the above objective, this invention provides a fly ash washing treatment system including a fly ash storage tank, a dissolving and stirring tank, a washing tank, a temporary storage tank and a filter press dehydrator; wherein the fly ash storage tank is used for storage Fly ash from waste incineration. Secondly, the fly ash is transported to a dissolving and stirring tank through a rotary valve and a plurality of fly ash screw conveyors, and tap water is supplied to the dissolving and stirring tank through at least one tap water tank and a tap water pump, so that the fly ash and water are dissolved and stirred . Furthermore, the dissolved and stirred fly ash is transported to a washing tank, and further stirred to dissolve the chlorine and heavy metals in the fly ash into the water; and the washed fly ash is transported to a temporary storage tank by a washing tank transfer pump. Continue to dissolve and stir in the storage tank. In addition, a temporary storage tank transfer pump transfers the dissolved and stirred fly ash to a filter press dehydrator for solid-liquid separation to produce filter cake and filtrate, and transfer the filtrate to a filtrate storage tank.

The fly ash washing treatment system of the present invention further includes a chelating agent storage tank, and a chelating agent stored in the chelating agent storage tank is transported to the dissolving and stirring tank through a chelating agent pump.

The fly ash washing treatment system of this creation further includes a filter cloth washing tank. A plurality of filter cloths are arranged under the filter press dehydrator to collect the solids in the filtrate, and a filter cloth washing tank is added to the filter cloth washing tank. Citric acid is used to clean the used filter cloths.

In the fly ash washing treatment system of this creation, it further includes a compressed air storage tank. Air is delivered to the compressed air storage tank through an air compressor and a compressed air source for storage, and then the air is supplied to the filter press dehydrator.

In the fly ash washing treatment system of this creation, a dehydrator filtrate transfer pump transports the filtrate to a wastewater treatment plant.

In order to achieve the above-mentioned another objective, the present invention provides a fly ash washing treatment system, which includes at least one fly ash storage tank, at least one dissolution stirring tank, a temporary storage tank, a chelating agent storage tank, and at least one fly ash cleaning filter press; Wherein, the fly ash storage tank stores the fly ash generated by the incineration of waste; and the dissolution stirring tank transports the fly ash to the dissolution stirring tank through at least one fly ash screw conveyor, and provides tap water to the dissolution stirring tank through a tap water tank. In the tank, stir and dissolve the fly ash and water. Secondly, the dissolving and stirring fly ash is transported to the temporary storage tank for further stirring and dissolution, and a chelating agent in the chelating agent storage tank is transported to the temporary storage tank. Furthermore, each fly ash scavenging filter press delivers the dissolved and stirred fly ash and the chelating agent to the fly ash scavenging filter press via a temporary storage tank transfer pump, and provides tap water to the fly ash through the tap water tank. The fly ash scavenging filter press, and then air is supplied to the fly ash scavenging filter press through an air compressor and a compressed air storage tank, so that the fly ash in the fly ash scavenging filter press passes through the chelating agent, Tap water and air dissolve the chlorine and heavy metals in the fly ash into the water to produce a filter cake.

In the fly ash washing treatment system of this creation, a chemical tank is further included, and the chemical tank stores a citric acid.

The fly ash washing treatment system of this creation further includes a circulating water tank, the filtrate is transported to the circulating water tank, the filtrate is processed by the circulating water tank and then sent to the fly ash cleaning filter press for reuse or Form a waste water.

The fly ash washing treatment system of this creation further includes a waste water mixing tank. The waste water is collected into a drainage tank, and then sent to the waste water mixing tank of a wastewater treatment plant for treatment.

In the fly ash washing treatment system of this invention, the filter cake passes through at least one filter cake conveyor and a filter cake belt conveyor to transport the filter cake to a filter cake tanker or a space packaging bag.

Based on the above-mentioned advantages, and in order for the reviewer to have a better understanding of the creation, a preferred implementation is disclosed as follows, with the diagrams and figure numbers, the composition content of the creation and the effects achieved are described in detail below.

1: Fly ash washing treatment system

10: Fly ash storage tank

101: Rotary valve

102: Fly Ash Screw Transporter

20: Dissolving and stirring tank

21: tap sink

211: Water Pump

212: Dewatering machine filter cloth cleaning pump

213: Circulating Water Tank

213’: Recycling water tank

213": clean water tank

2131: Wastewater

22: Chelating agent storage tank

22’: Chemical tank

221: Chelating Agent Pump

30: washing tank

301: Washing tank transfer pump

40: temporary storage slot

401: Temporary storage tank transfer pump

50: Filter press dehydrator

51: filtrate storage tank

511: Dewatering machine filtrate transfer pump

512: Wastewater Treatment Plant

52: filter cake

521: Filter Cake Conveyor

522: Filter cake belt conveyor

523: Filter Cake Tank Truck

523’: Space Packaging Bag

52’: Filtrate

53: filter cloth cleaning water storage tank

531: Filter cloth cleaning water recovery pump

54: compressed air storage tank

541: Air compressor

55: Drain the sink

56: Wastewater mixing tank

Figure 1 is a flow chart of the fly ash washing treatment system of the creative embodiment 1.

Figure 2 is a block flow diagram of the new fly ash washing treatment system according to the second embodiment of the creation.

The following is a specific example to illustrate the implementation of this creation. Those who are familiar with this technique can easily understand the other advantages and effects of this creation from the content disclosed in this manual. In addition, this creation can also be implemented or applied by other different specific embodiments, and various modifications and changes can be made without departing from the spirit of this creation.

Please refer to Figure 1. Figure 1 is a flow chart of the fly ash washing treatment system of Creative Example 1.

As shown in Figure 1, the present invention provides a fly ash washing treatment system 1 including a fly ash storage tank 10, a dissolving and stirring tank 20, a washing tank 30, a temporary storage tank 40, and a filter press dehydrator 50; The fly ash storage tank 10 is used to store the fly ash generated by the incineration of wastes. The fly ash storage tank 10 is designed in a funnel shape to smoothly transport the fly ash and avoid bridging. It is also equipped with heaters and thermal insulation equipment to prevent fly ash. Deliquescence. Secondly, the fly ash is transported to a solution through a rotary valve 101 and at least one fly ash screw conveyor 102 In the de-stirring tank 20, tap water is supplied to the dissolving and stirring tank 20 through at least one tap water tank 21 and a tap water pump 211, and a chelating agent stored in a chelating agent storage tank 22 is transported to the dissolving and stirring tank 20 through a chelating agent pump 221. In the dissolution stirring tank 20, the fly ash, tap water, and the chelating agent are dissolved and stirred. Furthermore, the dissolved and stirred fly ash is transported to a washing tank 30, and further stirred to dissolve the chlorine and heavy metals in the fly ash into the water; and the washed fly ash is transported to the water by a washing tank transfer pump 301 Continue to dissolve and stir in a temporary storage tank 40.

In addition, a temporary storage tank transfer pump 401 transfers the dissolved and stirred fly ash to a filter press dehydrator 50, and an air compressor 541 transfers the air to a compressed air storage tank 54 for storage, and then the air It is supplied to the filter press dehydrator 50 for solid-liquid separation to produce a filter cake 52 and a filtrate 52'. Next, the filtrate 52' is transported to a filtrate storage tank 51, and the filtrate 52' is transported to a wastewater treatment plant 512 via a dehydrator filtrate transfer pump 511 for treatment, and then the wastewater treatment plant 512 and all the treated filtrate storage tank 51 The generated filtrate 52' is sent to the wastewater treatment plant 512. Furthermore, a plurality of filter cloths are arranged under the filter press dehydrator 50 to filter the solids in the filtrate 52', and the used filter cloths are transported to a filter cloth washing water storage tank 53, through a dehydration The machine filter cloth cleaning pump 212 provides tap water for the filter cloth cleaning water storage tank 53, and adds a citric acid to the filter cloth cleaning water storage tank 53 to clean the filter cloths. The filter cloth cleaning water storage tank 53 produces waste, The washing water recovery pump 531 is sent to a washing tank 30 through a filter cloth.

Please refer to FIG. 2, which is a block flow diagram of the new fly ash washing treatment system according to the second embodiment of the creation.

As shown in Figure 2, this creation provides another fly ash washing treatment system, which includes at least one fly ash storage tank 10, at least one dissolution stirring tank 20, a temporary storage tank 40, a chelating agent storage tank 22, and a plurality of fly ash cleaning Filter press 30'; wherein, the fly ash storage tank 10 stores the fly ash generated by incineration of waste; and The fly ash is transported to the dissolving and stirring tank 20 via at least one fly ash auger 102, and tap water is supplied to the dissolving and stirring tank 20 through a tap water tank 21 to stir and dissolve the fly ash and water. Secondly, the fly ash after dissolution and stirring is transported to the temporary storage tank 40 for further stirring and dissolution; then, a chelating agent stored in the chelating agent storage tank 22 is transported to the temporary storage tank 40. In addition, the fly ash washing treatment system 1 may include a chemical tank 22', and the chemicals contained in the chemical tank 22' can be arbitrarily changed according to the needs of the user. In a preferred embodiment, the chemical tank 22 The agent included can be a citric acid, but the creation is not limited to this.

As shown in Figure 2, the dissolved and stirred fly ash and the chelating agent are transported to the fly ash cleaning filter press 30' via a transport pump (not shown), and the tap water provided by the tap water tank 21 is transported To the fly ash scavenging filter press 30', air is supplied to the fly ash scavenging filter press 30' through a compressed air storage tank 54 and an air compressor 541, so that the fly ash scavenging filter press 30 The fly ash in the'in the fly ash dissolves the chlorine and heavy metals in the fly ash into the water through the chelating agent, tap water and air to produce filter cake 52 and filtrate. Then, the filtrate is transported to the circulating water tank 213, and the filtrate 52' is processed by the circulating water tank 213 and then transported to the fly ash scavenging filter press 30' for reuse or to form a waste water 2131; wherein, the fly ash The water used for washing the filter press 30' can also be secondary water stored in a recovery water tank 213', or tap water supplied to a clean water tank 213" through the tap water tank 21. The waste water 2131 is collected. To a drainage tank 55, and then to a waste water leveling tank 56 of a wastewater treatment plant for treatment. In addition, the filter cake 52 passes through a plurality of filter cake conveyors 521 and a filter cake belt conveyor 522, and the filter cake 52 is transported to a filter cake tanker 523 or a space packaging bag 523'.

In summary, the fly ash washing treatment system created by this invention can dissolve harmful substances in the fly ash to make the harmful fly ash harmless, and the product after the washing process is more stable for reuse. Secondly, the creation of the fly ash washing treatment system can save the amount of water used to reduce the generation of waste water and shorten the operation time of the entire process.

The above-mentioned embodiments are merely examples for convenience of description, and the scope of rights claimed in this creation should be subject to the scope of the patent application, rather than being limited to the above-mentioned embodiments.

1: Fly ash washing treatment system

10: Fly ash storage tank

101: Rotary valve

102: Fly Ash Screw Transporter

20: Dissolving and stirring tank

21: tap sink

211: Water Pump

212: Dewatering machine filter cloth cleaning pump

22: Chelating agent storage tank

221: Chelating Agent Pump

30: washing tank

301: Washing tank transfer pump

40: temporary storage slot

401: Temporary storage tank transfer pump

50: Filter press dehydrator

51: filtrate storage tank

511: Dewatering machine filtrate transfer pump

512: Wastewater Treatment Plant

52: filter cake

52’: Filtrate

53: filter cloth cleaning water storage tank

531: Filter cloth cleaning water recovery pump

54: compressed air storage tank

541: Air compressor

Claims (10)

A fly ash water washing treatment system includes: a fly ash storage tank for storing fly ash generated by incineration of waste; a dissolving and stirring tank connected to the fly ash storage tank through a rotary valve and a plurality of fly ash screw conveyors, and The fly ash is transported to the dissolving and stirring tank through the rotary valve and the fly ash screw conveyors, and tap water is supplied to the dissolving and stirring tank through a tap water tank and a tap water pump, so that the fly ash and water are dissolved and stirred; The tank is connected with the dissolving and stirring tank to transport the dissolved and stirred fly ash to the washing tank, and further agitate to dissolve the chlorine and heavy metals in the fly ash into the water; a temporary storage tank, through a washing tank transfer pump and the The washing tank is connected, and the washed fly ash is transported to the temporary storage tank by the washing tank transfer pump to continue to be dissolved and stirred; and a filter press dehydrator is connected to the temporary storage tank through a temporary storage tank transfer pump , The dissolving and stirring fly ash is transported to the filter press dehydrator for solid-liquid separation by the temporary storage tank transport pump to produce filter cake and filtrate, and the filtrate is transported to a filtrate storage tank. The fly ash washing treatment system described in item 1 of the scope of patent application further includes a chelating agent storage tank, and a chelating agent stored in the chelating agent storage tank is transported to the dissolving and stirring tank via a chelating agent pump. For example, the fly ash washing treatment system described in item 1 of the scope of patent application further includes a filter cloth cleaning tank. A citric acid is added to the cleaning tank to clean the used filter cloths. For example, the fly ash washing treatment system described in item 1 of the scope of patent application further includes a compressed air storage tank. Filter press dehydrator. The fly ash washing treatment system described in item 1 of the scope of patent application, wherein the filtrate is transported to a wastewater treatment plant through a dehydrator filtrate transfer pump. A fly ash water washing treatment system includes: a fly ash storage tank for storing fly ash generated from incineration of waste; a dissolving and stirring tank connected to the fly ash storage tank through at least one fly ash screw conveyor, and passing through the fly ash The screw conveyor transports the fly ash to the dissolving and stirring tank, and then provides tap water to the dissolving and stirring tank through a tap water tank to stir and dissolve the fly ash and water; a temporary storage tank is connected to the dissolving and stirring tank, and Dissolved and stirred fly ash is transported to the temporary storage tank for further stirring and dissolution; a chelating agent storage tank is connected to the temporary storage tank, and a chelating agent stored in the chelating agent storage tank is transported to the temporary storage tank; And at least one fly ash scavenging filter press, connected to the temporary storage tank through a delivery pump, and transporting the dissolved and stirred fly ash and the chelating agent to the fly ash scavenging filter press via the delivery pump, And the tap water provided by the tap water tank is delivered to the fly ash cleaning filter press, and then air is supplied to the fly ash cleaning filter press through a compressed air storage tank and an air compressor to make the fly ash cleaning press The fly ash in the filter press dissolves the chlorine and heavy metals in the fly ash into the water through the chelating agent, tap water and air to produce a filter cake. As described in item 6 of the scope of patent application, the fly ash washing treatment system further includes a chemical tank for storing a citric acid. For example, the fly ash washing treatment system described in item 6 of the scope of patent application further includes a circulating water tank, and a filtrate is sent to the circulating water tank. The filtrate is processed by the circulating water tank and then sent to the fly ash for washing The filter press reuses or forms a waste water. The fly ash washing treatment system described in item 6 of the scope of patent application includes a waste In the water leveling tank, a waste water is collected into a discharge water tank, and then transported to the waste water leveling tank of a wastewater treatment plant for treatment. For example, the fly ash washing treatment system described in item 6 of the scope of patent application, wherein the filter cake passes through at least one filter cake conveyor and a filter cake belt conveyor to transport the filter cake to a filter cake tanker or a space Packing bag.

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