CN217350907U

CN217350907U - Improved heating system for UASB anaerobic tank of thermal power plant

Info

Publication number: CN217350907U
Application number: CN202221245024.XU
Authority: CN
Inventors: 陈勇; 杨钰莹; 赵勇
Original assignee: Guangzhou Huantou Zengcheng Environmental Protection Energy Co ltd
Current assignee: Guangzhou Huantou Zengcheng Environmental Protection Energy Co ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-09-02
Anticipated expiration: 2032-05-23

Abstract

The utility model discloses a modified thermal power plant UASB anaerobism pond heating system, it includes water-locator, static mixer, steam conduit and steam valve. The static mixer is sleeved outside the water distributor circulation water inlet pipe, a steam inlet of the static mixer is connected with a first end of a steam pipeline, a second end of the steam pipeline extracts steam from a second section of a thermal power plant steam turbine, a steam valve is fixedly arranged on the steam pipeline, and water in the water distributor circulation water inlet pipe flows into the anaerobic tank through the water distributor after being heated by the steam of the static mixer. The utility model discloses can realize utilizing power plant self steam turbine two-stage steam heating, under the condition of utilizing current resource, realize carrying out heating system maintenance and repair under the prerequisite in not clear pond simultaneously, shorten maintenance cycle, save the maintenance cost.

Description

Improved heating system for UASB anaerobic tank of thermal power plant

Technical Field

The utility model belongs to thermal power plant equipment field especially relates to a modified thermal power plant UASB anaerobism pond heating system.

Background

Generally speaking, the waste incineration treatment scale of a thermal power plant is 2000t/d, 3 grate waste incinerators with 750t/d are adopted, the installed power generation capacity is 2 turbine generator sets with 25MW, the designed treatment capacity of a waste leachate treatment system is 600m3/d (leachate 460m3/d + low concentration 140m3/d), and the main process of leachate treatment is 'regulating tank pretreatment + anaerobic (UASB) system + external MBR (two-stage AO biochemistry) + NF + RO'. Because original UASB anaerobism pond used is a heating methods of pond plate heat exchanger, plate heat exchanger heat time is long to can appear the scale deposit after the heating, then lead to heat exchanger valve class component to seal not tight, cause the interior leachate of anaerobism pond to flow to ground, the polluted environment is unfavorable for the environmental protection, plate heat exchanger's maintenance has also increased maintenance time limit for a project and the degree of difficulty simultaneously, influences entire system's safety and stability operation. Therefore, how to design a scientific and reasonable UASB anaerobic tank heating system according to the practical situation of the thermal power plant becomes the research direction.

SUMMERY OF THE UTILITY MODEL

In order to solve the not enough of prior art existence, the utility model provides a modified thermal power plant UASB anaerobism pond heating system utilizes the steam of following the extraction of thermal power plant steam turbine two-stage process, through static mixer and water-locator, carries out steam heating to the circulation intake that flows into UASB anaerobism pond, and the energy saving improves the wholeness ability in UASB anaerobism pond.

In order to achieve the above object, the utility model discloses an embodiment's an improved heating power plant UASB anaerobism pond heating system, it includes static mixer, steam conduit, steam valve and water-locator.

The static mixer is sleeved outside the water distributor circulation water inlet pipe, a steam inlet of the static mixer is connected with a first end of the steam pipeline, a second end of the steam pipeline extracts steam from a second section of a thermal power plant steam turbine, and a steam valve is fixedly arranged on the steam pipeline;

one end of the water distributor circulating water inlet pipe is connected with a water outlet at the bottom of the UASB anaerobic tank; the other end of the water distributor circulating water inlet pipe is connected with the water distributor, and the water distributor is connected with a fourth water inlet at the top of the anaerobic tank through a second water distribution outer pipe.

Furthermore, a first water inlet and a second water inlet are fixedly arranged at the top of the water distributor, and a plurality of first water outlets and a plurality of second water outlets are fixedly arranged at the bottom of the water distributor.

Furthermore, the first water inlet of the water distributor is connected with the percolate adjusting tank through a water inlet pipe of the water distributor.

Furthermore, a first water outlet of the water distributor is connected with a third water inlet at the top of the anaerobic tank through a first water distribution outer pipe.

Furthermore, two chambers which are not communicated are arranged in the water distributor, the first chamber is respectively communicated with the first water inlet and the plurality of first water outlets, and the second chamber is respectively communicated with the second water inlet and the plurality of second water outlets.

Further, the steam pipeline pumps steam through a suction pump.

Furthermore, a second water inlet of the water distributor is connected with a water outlet at the bottom of the anaerobic tank through a circulating water inlet pipe of the water distributor; and a second water outlet of the water distributor is connected with a fourth water inlet at the top of the anaerobic tank through a second water distribution outer pipe.

The utility model has the advantages that:

1. the utility model discloses the steam that the utilization was extracted from thermal power plant's steam turbine two-stage process carries out steam heating to the circulation intake that flows into UASB anaerobism pond through static mixer, and the energy saving improves the wholeness ability in UASB anaerobism pond.

2. The utility model discloses the heating system in anaerobism pond is located beyond the anaerobism pond, can maintain and overhaul under the prerequisite of unclear pond, guarantees the operation of equipment safety and stability, and efficiency improves, saves the maintenance cost, avoids clear pond increase maintenance work period.

Drawings

FIG. 1 is a schematic diagram of a heating system of an UASB anaerobic tank of an improved thermal power plant;

fig. 2 is a schematic structural diagram of a static mixer according to an embodiment of the present invention.

In the figure:

the system comprises a leachate regulating tank 1, a water distributor 2, an anaerobic tank 3, a first water distribution outer pipe 4, a second water distribution outer pipe 5, a first water distribution inner pipe 6, a second water distribution inner pipe 7, a water pipe bracket 8, a water distributor water inlet pipe 9, a water distributor circulation water inlet pipe 10, a steam turbine 20, a first water inlet 21, a second water inlet 22, a first water outlet 23, a second water outlet 24, a static mixer 30, an anaerobic tank bottom water outlet 31, a third water inlet 33, a fourth water inlet 34, a steam pipeline 40, an anaerobic water inlet pump 41, an anaerobic circulation pump 42, a steam valve 50, a static mixer steam inlet 60 and a static mixer steam cavity 70.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the following description is further made with reference to the accompanying drawings and examples.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in the attached drawing 1, the utility model provides an improved UASB anaerobic tank heating system of thermal power plant, including water-locator 2, first water distribution outer tube 4, second water distribution outer tube 5, first water distribution inner tube 6, second water distribution inner tube 7, water pipe support 8, static mixer 30, steam conduit 40 and steam valve 50.

As shown in fig. 2, the static mixer 30 is sleeved outside the water distributor circulation water inlet pipe 10, the static mixer steam inlet 60 is connected to a first end of the steam pipeline 40, a second end of the steam pipeline 40 extracts steam from a second section of the thermal power plant turbine 20, and the steam pipeline 40 is fixedly provided with a steam valve 50. Further, the steam pipeline pumps steam through the air pump.

The top of the water distributor 2 is fixedly provided with a first water inlet 21 and a second water inlet 22, and the bottom of the water distributor 2 is fixedly provided with a plurality of first water outlets 23 and a plurality of second water outlets 24; the first water inlet 21 is connected with the first end of the water distributor inlet pipe 9, and the second end of the water distributor inlet pipe 9 is connected with the percolate adjusting tank 1; the second water inlet 22 is connected with the first end of the water distributor circulating water inlet pipe 10, and the second end of the water distributor circulating water inlet pipe 10 is connected with the water outlet 31 at the bottom of the anaerobic tank. A plurality of third water inlets 33 and a plurality of fourth water inlets 34 are fixedly arranged at the top of the anaerobic tank 3, and a plurality of water pipe supports 8 are fixedly arranged in the anaerobic tank 3; the first water outlet 23 is connected with the first end of the first water distribution outer pipe 4, and the second end of the first water distribution outer pipe 4 is connected with the third water inlet 33; the second water outlet 24 is connected with the first end of the second water distribution outer pipe 5, and the second end of the second water distribution outer pipe 5 is connected with the fourth water inlet 34; the third water inlet 33 and the fourth water inlet 34 are both provided with a detachable flange structure, the first water distribution outer pipe 4 is connected with the first end of the first water distribution inner pipe 6 through the first flange structure, and the second end of the first water distribution inner pipe 6 is limited and locked on one water pipe bracket 8; the second water distribution outer pipe 5 is connected with the first end of the second water distribution inner pipe 7 through a second flange structure, and the second end of the second water distribution inner pipe 7 is limited and locked on the other water pipe support 8.

An anaerobic water inlet pump 41 is fixedly arranged on the water distributor inlet pipe 9, and an anaerobic circulating pump 42 is fixedly arranged on the water distributor circulating inlet pipe 10. Two chambers which are not communicated are arranged in the water distributor 2, the first chamber is respectively communicated with the first water inlet 21 and the first water outlet 23, and the second chamber is respectively communicated with the second water inlet 22 and the second water outlet 24. The first water distribution outer pipe 4 and the second water distribution outer pipe 5 are made of steel wire hose materials. The outermost side of the first inner water distribution pipe 6 and the second inner water distribution pipe 7 is a hard protection pipe, and the inner part is a PE pipe. The protection tube is made of stainless steel 316L, so that the lifting and laying during replacement are facilitated, and the uniform water distribution points in the pool are ensured. In addition, all pipeline interfaces are detachable flange structures: water pipe support 8 evenly distributed to 3 each positions in anaerobism pond, the support is fixed pipeline head portion only, can not obstruct the flow of water, and water is gone out from the support and is formed the multiple spot of 3 anaerobism ponds and intake, and the other is many pipelines, and the mode of multiple spot intake prevents that one of them pipeline scale deposit, dirty stifled back can't intake and lead to the system paralyse.

In actual operation, one end of the steam pipeline 40 extracts high-temperature steam from the two stages of the thermal power plant turbine 20, the other end of the steam pipeline 40 is connected with the steam inlet 60 of the static mixer, the high-temperature steam enters the steam cavity 70 of the static mixer through the steam pipeline 40, so that the temperature of the inner wall of the static mixer 30 is raised, because the static mixer 30 is sleeved outside the water distributor circulation water inlet pipe 10, the water flow in the circulation water inlet pipe 10 is heated after the temperature of the inner wall of the static mixer 30 is raised, and the steam valve 50 is fixedly arranged on the steam pipeline 40 and can control the steam inlet amount to adjust the water temperature. The heated water flows through the water distributor circulation inlet pipe 10, the anaerobic circulation pump 42 to the second water inlet 22 of the water distributor 2, flows into the water distributor 2, flows through a chamber inside the water distributor 2 to the plurality of second water outlets 24, and flows through the plurality of second water distribution outer pipes 5 to the plurality of fourth water inlets 34 of the anaerobic tank 3 to the anaerobic tank 3. Wherein, a first water outlet 23, a first water distribution outer pipe 4, a third water inlet 33, a first water distribution inner pipe 6 and a water pipe bracket 8 form an independent water distributor water outlet assembly; a second water outlet 24, a second water distribution outer pipe 5, a fourth water inlet 34, a second water distribution inner pipe 7 and a water pipe bracket 8 form another independent water distributor water outlet assembly. After the heated water flows into the water distributor 2, a plurality of sets of water distributor water outlet assemblies formed by a plurality of second water outlets 24 of the water distributor 2 enter the anaerobic tank 3, the temperature in the anaerobic tank 3 is increased, so that the temperature-rising water flow can be fully mixed with strains in the anaerobic tank 3, the anaerobic COD removal rate is well promoted, then the heated water flow flows out from a water outlet 31 at the bottom of the anaerobic tank, enters the water distributor circulating water inlet pipe 10 and is heated, a circulating water loop is formed, and the heating process is completed.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connected mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt among the prior art, and conventional model, including the conventional connected mode among the circuit connection adoption prior art, and the details are not repeated here, and the content that does not make detailed description in this description belongs to the prior art that skilled person in the art knows.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, it should be understood that those skilled in the art should also understand the scope of the present invention without inventively designing the similar structure and embodiments of the present invention without departing from the spirit of the present invention.

Claims

1. An improved heating system of a UASB anaerobic tank of a thermal power plant is characterized by comprising a static mixer, a steam pipeline, a steam valve and a water distributor;

2. The improved UASB anaerobic tank heating system of thermal power plant as claimed in claim 1, wherein the top of the water distributor is fixedly provided with a first water inlet and a second water inlet, and the bottom of the water distributor is fixedly provided with a plurality of first water outlets and a plurality of second water outlets.

3. The improved UASB anaerobic tank heating system of thermal power plant as claimed in claim 1, wherein the first water inlet of the water distributor is connected to the percolate adjusting tank through a water inlet pipe of the water distributor.

4. The improved UASB anaerobic tank heating system of thermal power plant as claimed in claim 1, wherein the first water outlet of the water distributor is connected to the third water inlet at the top of the anaerobic tank through the first water distribution outer pipe.

5. The improved UASB anaerobic tank heating system of thermal power plant as claimed in claim 1, wherein the water distributor is provided with two non-communicating chambers therein, the first chamber is communicated with the first water inlet and the plurality of first water outlets, and the second chamber is communicated with the second water inlet and the plurality of second water outlets.

6. The improved UASB anaerobic tank heating system of thermal power plant as claimed in claim 1, wherein the steam pipeline is used for extracting steam by an extraction pump.

7. The improved UASB anaerobic tank heating system of thermal power plant as claimed in claim 1, wherein the second water inlet of the water distributor is connected to the water outlet at the bottom of the anaerobic tank through a water distributor circulation inlet pipe; and a second water outlet of the water distributor is connected with a fourth water inlet at the top of the anaerobic tank through a second water distribution outer pipe.