CN215063865U

CN215063865U - A pipeline hybrid heating device for waste water recovery

Info

Publication number: CN215063865U
Application number: CN202120706260.6U
Authority: CN
Inventors: 董光起; 马殿民; 张纪涛; 冯传伟; 杜善庆; 张明; 王强; 李景辉
Original assignee: Taian Ruitai New Material Co ltd
Current assignee: Taian Ruitai New Material Co ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-12-07
Anticipated expiration: 2031-04-07

Abstract

The utility model discloses a pipeline mixing heating device for waste water recovery belongs to waste water recovery equipment technical field, and it includes wastewater disposal basin and line mixer, and line mixer includes core pipe, outer tube and annular orifice plate, the annular orifice plate suit is in the annular cavity between core pipe and the outer tube, annular orifice plate separates into first heat transfer district and second heat transfer district with the annular cavity between core pipe and the outer tube. The utility model provides a pipeline hybrid heating device for waste water recovery, occupation space is little, steam that gets into in the first heat transfer area through first steam inlet carries out the next door heat transfer with rivers in the core pipe earlier, and the steam is the small-amplitude cooling when making the small-amplitude intensification of rivers, and steam gets into the second heat transfer area after through annular orifice plate evenly distributed, gets into the core pipe through the through-hole in the gradual expansion pipeline section and mixes with rivers direct contact, has reduced the water hammer, and heat exchange efficiency is higher moreover. When steam is also introduced into the second heat transfer zone, stepwise heating can be achieved.

Description

A pipeline hybrid heating device for waste water recovery

Technical Field

The utility model relates to a pipeline hybrid heating device for waste water recovery belongs to waste water recovery equipment technical field.

Background

In the production process of cellulose ether, refined cotton powder is used as a raw material, and is subjected to alkalization reaction with alkali liquor in an organic solvent to generate alkalized cellulose, and the alkalized cellulose is subjected to etherification reaction with an etherifying agent to prepare a crude cellulose ether product. And carrying out post-treatment processes such as desolventizing, washing and centrifuging the crude cellulose ether product, and then drying and crushing the crude cellulose ether product. In the production process, a large amount of waste water is generated, the components in the waste water are complex, and the COD in the waste water is usually reduced through biological fermentation so as to meet the discharge or recycling requirement. The biological fermentation needs to be carried out at a proper temperature, so that the wastewater needs to be heated before being sent to a wastewater treatment station, so that the temperature of the wastewater is raised to the required requirement.

At present, the waste water produced in the cellulose ether production process is usually temporarily stored in a waste water tank, and a mode of introducing high-temperature steam into the waste water tank to integrally heat the waste water is adopted during heating. In the actual operation process, the capacity of the wastewater pool is usually large, the corresponding heating time is also long when steam heating is adopted, and the large capacity of the wastewater pool can also lead to the increase of the heat preservation difficulty, so that the heat loss in the heating process is increased, and the energy conservation and the consumption reduction are not facilitated.

The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the problem that prior art exists, provide a pipeline hybrid heating device for waste water recovery, occupation space is little, has reduced the water hammer, and heat exchange efficiency is higher moreover.

The utility model discloses an adopt following technical scheme to realize above-mentioned purpose:

a pipeline mixing and heating device for wastewater recovery comprises a wastewater pool and a pipeline mixer;

the line mixer includes:

the core pipe is formed by sequentially connecting a tapered pipe section, a straight pipe section and a gradually expanded pipe section, pipe orifices of the tapered pipe section and the gradually expanded pipe section respectively form a water inlet and a water outlet, and the water inlet is communicated with the wastewater tank through a pipeline;

the outer pipe is sleeved on the outer side of the core pipe;

the annular pore plate is uniformly provided with through holes, is sleeved in an annular cavity between the core pipe and the outer pipe, and divides the annular cavity between the core pipe and the outer pipe into a first heat exchange area close to the water inlet and a second heat exchange area close to the water outlet;

the outer pipe of the first heat exchange area is provided with a first steam inlet, and the gradually expanding pipe section of the second heat exchange area is uniformly provided with through holes.

Optionally, the annular orifice plate is sleeved outside the divergent pipe section.

Optionally, gaps are uniformly distributed on the inner side edge of the annular pore plate.

Optionally, the outer tube of the second heat exchange zone is provided with a second steam inlet.

Optionally, the inlet axis of the first steam inlet and the inlet direction of the second steam inlet are both tangential to the outer pipe.

Optionally, the inlet axis of the first steam inlet and the inlet direction of the second steam inlet are oppositely arranged.

Benefits of the present application include, but are not limited to:

the utility model provides a pipeline hybrid heating device for waste water recovery, occupation space is little, steam that gets into in the first heat transfer area through first steam inlet carries out the next door heat transfer with rivers in the core pipe earlier, steam small-amplitude cooling when making rivers small-amplitude intensification, steam gets into the second heat transfer area after through annular orifice plate evenly distributed, through gradually expanding the through-hole entering core pipe in the pipeline section mixes with rivers direct contact, make the temperature rise after from delivery port output, water hammer has been reduced, and heat exchange efficiency is higher. Furthermore, when steam is also introduced into the second heat exchange zone, gradual heating can be realized, and water hammer is further reduced. The steam pressure of the second steam inlet is not too high, so that the waste heat resource can be fully utilized, and the energy utilization rate is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of a pipeline mixing and heating device for wastewater recovery provided by the present invention;

FIG. 2 is a schematic diagram of a pipeline mixer in a pipeline mixing and heating device for wastewater reclamation according to the present invention;

FIG. 3 is a schematic diagram of the construction of an orifice plate;

FIG. 4 is a schematic view of the connection of the first and second steam inlets to the outer pipe;

in the figure, 100, a wastewater pond; 200. a pipeline mixer; 210. a core tube; 211. a tapered pipe section; 212. a straight pipe section; 213. a divergent pipe section; 220. an outer tube; 221. a first steam inlet; 222. a second steam inlet; 230. an annular orifice plate; 231. a notch; 241. a first heat transfer zone; 242. a second heat transfer zone.

Detailed Description

In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.

It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein. Accordingly, the scope of the present invention is not limited by the specific embodiments disclosed below.

As shown in fig. 1 to 3, the present invention provides a pipe mixing and heating apparatus for wastewater reclamation, which includes a wastewater tank 100 and a pipe mixer 200, wherein the pipe mixer 200 includes a core pipe 210, an outer pipe 220 and an annular orifice 230.

Specifically, the outer pipe 220 is sleeved outside the core pipe 210, the core pipe 210 is formed by sequentially connecting a tapered pipe section 211, a straight pipe section 212 and a tapered pipe section 213, pipe orifices of the tapered pipe section 211 and the tapered pipe section 213 respectively form a water inlet and a water outlet, and the water inlet is communicated with the wastewater pond 100 through a pipeline.

The annular pore plate 230 is uniformly provided with through holes, the annular pore plate 230 is sleeved in an annular cavity between the core pipe 210 and the outer pipe 220, and the annular cavity between the core pipe 210 and the outer pipe 220 is divided into a first heat exchange area 241 close to the water inlet and a second heat exchange area 242 close to the water outlet by the annular pore plate 230.

The outer pipe 220 of the first heat transfer zone 241 is provided with a first steam inlet 221, and the divergent pipe section 213 of the second heat transfer zone 242 is uniformly provided with through holes.

When the water heater works, waste water is pumped out of the waste water pool 100 through the water pump and sent to the core pipe 210, steam enters the first heat exchange area 241 through the first steam inlet 221, the temperature of the steam is reduced in a small range after heat exchange with the water flow partition walls in the core pipe 210, the temperature of the steam is increased in a small range, then the steam enters the second heat exchange area 242 after being uniformly distributed through the through holes in the annular pore plate 230, the flow of the steam is smooth, and the contact area between the steam and water flow in the core pipe 210 is increased after the steam is uniformly distributed. In the second heat exchange area 242, the steam enters the core tube 210 through the through holes on the divergent tube section 213 and is directly contacted and mixed with the water flow preheated at the inner diameter of the core tube 210, so that the water hammer is reduced. The water passes through the second heat transfer region 242 and then continues to increase in temperature before being output from the water outlet.

It can be seen that, the utility model provides a pipeline hybrid heating device for waste water recovery improves the heating method of the leading-in big water of wastewater disposal basin 100 of steam for steam and waste water accomplish the mixed heating that flows in pipeline mixer 200, makes and sends to the waste water treatment station after the waste water temperature risees, and the thermal efficiency is high, and occupation space is little.

In one embodiment, the annular orifice 230 is sleeved outside the divergent section 213, such that all of the convergent section 211, the straight section 212, and a portion of the divergent section 213 are located within the first heat transfer zone 241. The water flow in the divergent section 213 decreases in velocity and is able to rapidly contact and mix with the steam.

As shown in fig. 3, in another embodiment, gaps 231 are uniformly formed on the inner edge of the annular hole plate 230, and when condensed water is in the first heat exchange region 241, the condensed water can flow to the second heat exchange region 242 along with steam from the through holes and the gaps 231 of the annular hole plate 230. Preferably, superheated steam is used as the steam introduced through the first steam inlet 221, so that the generation of condensed water is reduced.

In a preferred embodiment, the outer tube 220 of the second heat transfer zone 242 is provided with a second steam inlet 222. In practice, steam is supplied to the second heat transfer region 242 through the second steam inlet 222. So set up, two way steam are leading-in respectively carries out the heating in grades to rivers in the pipeline hybrid heater, has reduced the water hammer. Note that the flow rate of the make-up steam is adjusted to be smaller than the flow rate of the steam introduced through the first steam inlet 221, and the steam is prevented from flowing backward from the second heat transfer zone 242 to the first heat transfer zone 241. The steam pressure of the second steam inlet 222 is not too high, so that the waste heat resource can be fully utilized, and the energy utilization rate is improved.

Further, as shown in fig. 4, the inlet axis of the first steam inlet 221 and the inlet direction of the second steam inlet 222 are tangential to the outer pipe 220, so that the steam enters tangentially along the inner wall of the outer pipe 220 and then performs a swirling motion, thereby reducing the impact on the core pipe 210.

Furthermore, the inlet axis of the first steam inlet 221 and the inlet direction of the second steam inlet 222 are arranged in opposite directions, so that the moving directions of the steam in the first heat exchange region 241 and the second heat exchange region 242 are consistent, and the collision is reduced.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. 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 above-mentioned specific embodiments can not be regarded as the restriction to the protection scope of the present invention, to the technical personnel in this technical field, it is right that any replacement improvement or transformation that the embodiment of the present invention made all fall within the protection scope of the utility model.

The parts of the present invention not described in detail are the known techniques of those skilled in the art.

Claims

1. A pipeline mixing and heating device for wastewater recovery is characterized by comprising a wastewater pool and a pipeline mixer;

the line mixer includes:

the outer pipe is sleeved on the outer side of the core pipe;

2. The pipeline mixing and heating device for wastewater reclamation of claim 1, wherein the annular orifice plate is sleeved outside the divergent pipe section.

3. The pipeline mixing and heating device for wastewater reclamation of claim 1, wherein the inner side edges of the annular orifice plates are uniformly provided with notches.

4. The pipeline mixing and heating device for wastewater reclamation of claim 1, wherein the second steam inlet is provided on the outer pipe of the second heat exchange zone.

5. The line mixing and heating device for wastewater reclamation of claim 4, wherein the inlet axis of the first steam inlet and the inlet direction of the second steam inlet are both tangential to the outer pipe.

6. The line mixing and heating apparatus for wastewater reclamation of claim 5, wherein the inlet axis of the first steam inlet and the inlet direction of the second steam inlet are oppositely disposed.