Boiler blow-off water vapor purification and recovery device

Abstract

The utility model discloses a boiler blow-off steam purification and recovery device, which belongs to the technical field of waste heat recovery and comprises a heat exchanger connected with a boiler, a steam condensation collector, an efficient purification component and a circulating water pump, a first one-way valve is arranged between the heat exchanger and the steam condensation collector, and a second one-way valve is arranged between the heat exchanger and the steam condensation collector. An inlet of the first one-way valve is connected with an outlet of the heat exchanger, an outlet of the first one-way valve is connected with an inlet of the steam condensation collector, the steam condensation collector is communicated with the efficient purification assembly, the efficient purification assembly is communicated with the circulating water pump, and the circulating water pump is connected with a water supplementing opening of a boiler. A pressure reducing valve is arranged between the steam condensation collector and the efficient purification assembly. By means of the structure, the problems that an existing device is difficult to utilize waste heat of water vapor in boiler blow-off and wastes water resources are solved, the energy utilization rate is increased, and green production is promoted.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, in particular to a boiler wastewater steam purification and recovery device. Background Art

[0002] To maintain boiler water quality and safe operation, boilers must regularly or continuously discharge high-grade waste heat water during operation. This wastewater typically contains impurities such as salt, alkali, silicate, and suspended insoluble matter, and possesses a high calorific value. However, traditional wastewater discharge methods often waste this calorific value and water resources, impacting the overall efficiency of the boiler. Furthermore, with the growing tension between energy supply and demand, energy conservation, consumption reduction, and emission reduction have become crucial development priorities for all enterprises.

[0003] Therefore, it is necessary to provide a boiler wastewater steam purification and recovery device to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a boiler wastewater steam purification and recovery device to solve the problem that the existing device is difficult to utilize the waste heat of water vapor in the boiler wastewater and wastes water resources, improve energy utilization and promote green production.

[0005] To achieve the above-mentioned objectives, the utility model provides a boiler wastewater steam purification and recovery device, comprising a heat exchanger connected to a boiler, a steam condensate collector, a high-efficiency purification component and a circulating water pump, a first one-way valve being arranged between the heat exchanger and the steam condensate collector, the inlet of the first one-way valve being connected to the outlet of the heat exchanger, the outlet of the first one-way valve being connected to the inlet of the steam condensate collector, the steam condensate collector being connected to the high-efficiency purification component, the high-efficiency purification component being connected to the circulating water pump, and the circulating water pump being connected to the boiler.

[0006] Preferably, the steam condensation collector is provided with a condensation plate and a condensed water outlet, the steam condensation collector is connected to a cold air pipe, the condensation plate is arranged inside the steam condensation collector, the condensation plate is either an aluminum condensation plate or a stainless steel condensation plate, the condensation plate is wavy, and an opening is arranged at the bottom of the condensation plate.

[0007] Preferably, a pressure reducing valve is provided between the steam condensation collector and the high-efficiency purification component.

[0008] Preferably, the high-efficiency purification component includes the following equipment:

[0009] Hydrocyclone separator to separate large particles of impurities;

[0010] Fine filter to separate small particles of impurities;

[0011] and, chemical adsorption towers to remove dissolved pollutants.

[0012] Preferably, the hydrocyclone separator is provided with a condensed water inlet and a large particle impurity outlet, the fine filter is provided with a small particle impurity outlet, the hydrocyclone separator and the fine filter are connected through a primary filtration water pipe, and a second one-way valve is provided on the primary filtration water pipe.

[0013] Preferably, several layers of chemical adsorbent are provided in the chemical adsorption tower, and the chemical adsorbent is one or more of activated carbon adsorbent, molecular sieve adsorbent, activated alumina adsorbent, and zeolite adsorbent.

[0014] Preferably, the chemical adsorption tower and the fine filter are connected via a secondary filtered water pipeline, and a third one-way valve is provided on the secondary filtered water pipeline.

[0015] Preferably, the heat exchanger is connected to the boiler via a steam insulation pipe.

[0016] Therefore, the utility model adopts the above-mentioned boiler wastewater steam purification and recovery device, which has the following beneficial effects:

[0017] 1. The utility model sets a heat exchanger at the steam outlet of the boiler, which can utilize the waste heat in the steam, initially lower the temperature of the exhaust gas, and reduce the loss in the subsequent condensation process;

[0018] 2. The utility model is equipped with a high-efficiency purification component, which removes large and small particle impurities and gaseous pollutants from the cooled liquid through a hydrocyclone separator, a fine filter and a chemical adsorption tower, thereby ensuring the filtration quality.

[0019] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a boiler wastewater steam purification and recovery device according to the present utility model;

[0021] Notes

[0022] 1. Boiler; 2. Steam insulation pipe; 3. Heat exchanger; 4. First one-way valve; 5. Steam condensate collector; 501. Condensation plate; 502. Condensate outlet; 503. Air conditioning pipe; 6. Pressure reducing valve; 7. High-efficiency purification component; 8. Cyclone separator; 801. Condensate inlet; 802. Large particle impurity outlet; 9. Primary filtration water pipe; 10. Second one-way valve; 11. Fine filter; 1101. Small particle impurity outlet; 12. Secondary filtration water pipe; 13. Third one-way valve; 14. Chemical adsorption tower; 1401. Chemical adsorbent; 15. Circulating water pump. DETAILED DESCRIPTION

[0023] The technical solution of the present utility model is further described below through the accompanying drawings and embodiments.

[0024] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the usual meanings understood by persons of ordinary skill in the field to which this utility model belongs. The words "first", "second" and similar terms used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0025] The specific connection methods of each part all adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0026] As the instruction manual Figure 1 As shown, the utility model discloses a boiler wastewater steam purification and recovery device, including a heat exchanger 3 connected to a boiler 1, a steam condensate collector 5, a high-efficiency purification component 7 and a circulating water pump 15. A first one-way valve 4 is arranged between the heat exchanger 3 and the steam condensate collector 5. The inlet of the first one-way valve 4 is connected to the outlet of the heat exchanger 3, and the outlet of the first one-way valve 4 is connected to the inlet of the steam condensate collector 5. The steam condensate collector 5 is connected to the high-efficiency purification component 7, and the high-efficiency purification component 7 is connected to the circulating water pump 15. The circulating water pump 15 is connected to the water supply port of the boiler 1.

[0027] The heat exchanger 3 is connected to the boiler 1 via a water vapor insulation pipe 2 , which reduces the heat loss of water vapor after being discharged from the boiler 1 , thereby allowing the waste heat in the water vapor to be exchanged in the heat exchanger 3 as much as possible.

[0028] The steam condensation collector 5 is provided with a condensation plate 501 and a condensed water outlet 502. The condensation plate 501 is arranged inside the steam condensation collector 5. The steam condensation collector 5 is connected to a conventional cold air pipe 503. The condensation plate 501 is made of a metal material with good thermal conductivity, and is either an aluminum condensation plate or a stainless steel condensation plate. The condensation plate 501 is wavy and has an opening at the bottom, so that water vapor forms water droplets on the side wall of the condensation plate after contacting the condensation plate 501 and then falls.

[0029] A pressure reducing valve 6 is provided between the steam condensation collector 5 and the high-efficiency purification component 7 .

[0030] The high-efficiency purification assembly 7 includes the following equipment: a hydrocyclone 8, a fine filter 11, and a chemical adsorption tower 14. The hydrocyclone 8 is equipped with a condensate inlet 801 and a large particle impurity outlet 802, and the fine filter 11 is equipped with a small particle impurity outlet 1101. The hydrocyclone 8 and fine filter 11 are connected by a primary filtered water pipe 9, which is equipped with a second one-way valve 10. The chemical adsorption tower 14 and fine filter 11 are connected by a secondary filtered water pipe 12, which is equipped with a third one-way valve 13.

[0031] The hydrocyclone 8 uses centrifugal force to separate large impurities from the water collected by the steam condensate collector 5. The condensed water enters the hydrocyclone 8 from the condensed water inlet 801. Under the action of centrifugal force, the pre-filtered water is discharged into the pre-filtered water pipe 9, and the large impurities are discharged from the large impurity outlet 802 below.

[0032] The fine filter 11 further separates small particles of impurities using a filter element. The small particles of impurities are discharged from the small particle impurity outlet 1101, and the secondary filtered water is discharged into the chemical adsorption tower through the secondary filtered water pipeline 12;

[0033] Several layers of chemical adsorbent 1401 are provided in the chemical adsorption tower 14. The chemical adsorbent 1401 is one or more of activated carbon adsorbent, molecular sieve adsorbent, activated alumina adsorbent, and zeolite adsorbent, so as to remove soluble pollutants in the secondary filtered water.

[0034] When the device is working, water vapor is discharged from the boiler 1 through the water vapor insulation pipe 2 and enters the heat exchanger 3, and uses the waste heat to exchange heat with the liquid in the heat exchanger 3 for the first cooling, and then enters the steam condensation collector 5. The cold air input by the cold air pipe 503 and the condensation plate 501 cause the water vapor to gather and fall on the condensation plate 501, so that the condensed water is discharged through the condensed water outlet 502, and enters the high-efficiency purification component 7 through the pressure reducing valve 6 for purification. The condensed water enters the cyclone separator 8 from the condensed water inlet 801. Under the action of centrifugal force, the primary filtered water is discharged into the primary filtered water pipe 9 and enters the fine filter 11, and large particles of impurities are discharged from the large particle impurity outlet 802 below; the fine filter 11 uses the filter element to further separate small particles of impurities, and the small particles of impurities are discharged from the small particle impurities outlet 1101. The secondary filtered water is discharged into the chemical adsorption tower through the secondary filtered water pipe 12 to remove the soluble pollutants in the secondary filtered water. Part of the purified water is used for other purposes, and the other part enters the boiler 1 through the circulating water pump 15 as partial makeup water.

[0035] Therefore, the utility model adopts a boiler wastewater steam purification and recovery device with the above structure, which solves the problem that the existing device is difficult to utilize the waste heat of water vapor in boiler wastewater and wastes water resources, improves energy utilization and promotes green production.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A boiler wastewater steam purification and recovery device, characterized by: It includes a heat exchanger connected to the boiler, a steam condensate collector, a high-efficiency purification component and a circulating water pump. A first one-way valve is arranged between the heat exchanger and the steam condensate collector. The inlet of the first one-way valve is connected to the outlet of the heat exchanger, and the outlet of the first one-way valve is connected to the inlet of the steam condensate collector. The steam condensate collector is connected to the high-efficiency purification component, the high-efficiency purification component is connected to the circulating water pump, and the circulating water pump is connected to the boiler.

2. The boiler wastewater steam purification and recovery device according to claim 1, characterized in that: The steam condensation collector is provided with a condensation plate and a condensed water outlet. The steam condensation collector is connected to a cold air pipe. The condensation plate is arranged inside the steam condensation collector. The condensation plate is either an aluminum condensation plate or a stainless steel condensation plate. The condensation plate is wavy and has an opening at the bottom of the condensation plate.

3. The boiler wastewater steam purification and recovery device according to claim 1, characterized in that: A pressure reducing valve is provided between the steam condensation collector and the high-efficiency purification component.

4. The boiler wastewater steam purification and recovery device according to claim 1, characterized in that: The high-efficiency purification component includes the following equipment: Hydrocyclone separator to separate large particles of impurities; Fine filter to separate small particles of impurities; and, chemical adsorption towers to remove dissolved pollutants.

5. The boiler wastewater steam purification and recovery device according to claim 4, characterized in that: The hydrocyclone separator is provided with a condensed water inlet and a large particle impurity outlet, the fine filter is provided with a small particle impurity outlet, the hydrocyclone separator and the fine filter are connected through a primary filtration water pipe, and a second one-way valve is provided on the primary filtration water pipe.

6. The boiler wastewater steam purification and recovery device according to claim 4, characterized in that: Several layers of chemical adsorbent are arranged in the chemical adsorption tower, and the chemical adsorbent is one of activated carbon adsorbent, molecular sieve adsorbent, activated alumina adsorbent and zeolite adsorbent.

7. The boiler wastewater steam purification and recovery device according to claim 4, characterized in that: The chemical adsorption tower and the fine filter are connected via a secondary filtered water pipeline, and a third one-way valve is provided on the secondary filtered water pipeline.

8. The boiler wastewater steam purification and recovery device according to claim 1, characterized in that: The heat exchanger is connected to the boiler via a steam insulation pipe.

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