阅读说明：本技术 一种蒸发处理高盐高有机物废水的加热装置 (Heating device for evaporation treatment of high-salinity high-organic-matter wastewater ) 是由 张继超 张万松 耿天甲 曹真 曹普晅 吴冠龙 王妙婷 张琪 乔文文 于 2021-07-12 设计创作，主要内容包括：本发明提供了一种蒸发处理高盐高有机物废水的加热装置。本发明的加热装置包括蒸汽室、下物料水室、上物料水室和换热管束,下物料水室和上物料水室物相对隔离设置在蒸汽室的下端和上端,在下物料水室和上物料水室上分别设有物料水进口和物料水出口,在蒸汽室的内部沿高度方向间隔且交错地设置有多个折流板,在蒸汽室上设有蒸汽进口、不凝气出口和冷凝水出口,换热管束设置在蒸汽室的内部,换热管束的下端和上端分别与下物料水室和上物料水室连通。本发明的加热装置具有蒸汽用量少、换热面积小、传热效率高、设备投资省等优势。(The invention provides a heating device for evaporating high-salinity high-organic-matter wastewater. The heating device comprises a steam chamber, a lower material water chamber, an upper material water chamber and a heat exchange tube bundle, wherein the lower material water chamber and the upper material water chamber are oppositely arranged at the lower end and the upper end of the steam chamber in an isolated manner, a material water inlet and a material water outlet are respectively arranged on the lower material water chamber and the upper material water chamber, a plurality of baffle plates are arranged inside the steam chamber at intervals and in a staggered manner along the height direction, the steam chamber is provided with a steam inlet, a non-condensable gas outlet and a condensed water outlet, the heat exchange tube bundle is arranged inside the steam chamber, and the lower end and the upper end of the heat exchange tube bundle are respectively communicated with the lower material water chamber and the upper material water chamber. The heating device has the advantages of small steam consumption, small heat exchange area, high heat transfer efficiency, low equipment investment and the like.)

1. The utility model provides a heating device of evaporation treatment high salt high organic matter waste water, a serial communication port, including the steam chamber, lower material hydroecium, go up material hydroecium and heat exchanger tube bank, lower material hydroecium and last material hydroecium relatively keep apart the setting at the lower extreme and the upper end of steam chamber, be equipped with material water inlet and material water export respectively on lower material hydroecium and last material hydroecium, inside along the direction of height interval and crisscross a plurality of baffling boards that are provided with in the steam chamber, be equipped with steam inlet on the steam chamber, noncondensable gas export and comdenstion water export, heat exchanger tube bank sets up the inside at the steam chamber, heat exchanger tube bank's lower extreme and upper end communicate with lower material hydroecium and last material hydroecium respectively.

2. The heating apparatus of claim 1, wherein the steam chamber is enclosed by a shell, an upper tube plate and a lower tube plate, the upper tube plate and the lower tube plate being sealingly secured to the upper and lower ends of the shell.

3. The heating device of claim 2, wherein the non-condensable gas outlet comprises an upper non-condensable gas outlet arranged at the upper part of the housing and a lower non-condensable gas outlet arranged at the lower part of the housing, the steam inlet is arranged at the upper part of the housing and below the upper non-condensable gas outlet, and the condensed water outlet is arranged at the bottom of the housing.

4. The heating apparatus as claimed in claim 3, wherein the distance between adjacent baffles is 300-1000mm, and the distance between the baffle disposed at the lowermost portion of the steam chamber and the lower noncondensable gas outlet is 10-100 mm.

5. The heating apparatus as claimed in claim 3, wherein the distance between the upper noncondensable gas outlet and the upper tube plate is 1-20mm, and the distance between the lower noncondensable gas outlet and the lower tube plate is 200-400 mm.

6. The heating device of claim 3, wherein the distance between the condensed water outlet and the lower tube plate is 1-5 mm.

7. The heating device of claim 2, wherein at least one fixing rod is vertically disposed between the upper tube plate and the lower tube plate.

8. The heating device of claim 2, wherein the lower material water chamber is composed of a lower end cover covered on the lower tube plate, the lower end cover is connected with the lower tube plate through a lower end cover flange, the material water inlet is arranged on the lower end cover, and a lower thermometer interface is further arranged on the lower end cover.

9. The heating device as claimed in claim 2, wherein the upper material water chamber is composed of an upper end cover covered on the upper tube plate, the upper end cover is connected with the upper tube plate through an upper end cover flange, the material water outlet is arranged on the upper end cover, and an upper thermometer interface is further arranged on the upper end cover.

10. The heating apparatus of claim 1, wherein the heat exchange tube bundle comprises a plurality of heat exchange tubes arranged in a regular triangle.

Technical Field

The invention relates to the technical field of wastewater treatment, in particular to a heating device for evaporating high-salinity high-organic-matter wastewater.

Background

The wastewater discharged in the production process of the industries such as petrochemical industry, coal chemical industry, metallurgy, pharmacy, printing and dyeing, papermaking and the like has the characteristics of high salt, high organic matters and the like, generally the salt content is more than 3000mg/L, the COD (chemical oxygen demand) is more than 2000mg/L, the temperature is high, and the wastewater contains a large amount of toxic and harmful organic matters such as aromatic compounds, heterocyclic compounds, hydrocarbon compounds and the like, and even if the wastewater is discharged into a water body after being treated, the potential safety hazard to the water environment is still caused. Therefore, governments in various places require that enterprises of this type must achieve zero liquid discharge, which is referred to as zero discharge for short.

At present, the zero-emission treatment process of high-salt high-organic wastewater mainly adopts an evaporative crystallization process, has the advantages of simple process, convenience in operation, high water recovery rate, small occupied area and the like, and is popular with various large enterprises. The high-salinity high-organic-matter wastewater has the characteristics of high salinity, high water body viscosity and the like, a forced circulation evaporation mode is generally adopted in an evaporation crystallization process, and most of heating devices adopt fixed tube-plate type tubular heaters, but the defects of low heat transfer efficiency, large heat exchange area, high equipment investment and the like exist.

In view of this, the invention is particularly proposed.

Disclosure of Invention

The invention aims to provide a heating device for evaporating high-salinity high-organic-matter wastewater, which has the advantages of small steam consumption, small heat exchange area, high heat transfer efficiency, low equipment investment and the like.

The invention provides a heating device for evaporating high-salinity high-organic-matter wastewater, which comprises a steam chamber, a lower material water chamber, an upper material water chamber and a heat exchange tube bundle, wherein the lower material water chamber and the upper material water chamber are relatively arranged at the lower end and the upper end of the steam chamber in an isolated manner, the lower material water chamber and the upper material water chamber are respectively provided with a material water inlet and a material water outlet, a plurality of baffle plates are arranged inside the steam chamber at intervals and in a staggered manner along the height direction, the steam chamber is provided with a steam inlet, a non-condensable gas outlet and a condensed water outlet, the heat exchange tube bundle is arranged inside the steam chamber, and the lower end and the upper end of the heat exchange tube bundle are respectively communicated with the lower material water chamber and the upper material water chamber.

Furthermore, the steam chamber is enclosed by the casing, upper tube plate and lower tube plate, and upper tube plate and lower tube plate seal are fixed at the upper end and the lower extreme of casing.

Further, the non-condensable gas outlet comprises an upper non-condensable gas outlet arranged on the upper portion of the shell and a lower non-condensable gas outlet arranged on the lower portion of the shell, the steam inlet is arranged on the upper portion of the shell and located below the upper non-condensable gas outlet, and the condensed water outlet is arranged at the bottom of the shell.

Further, the distance between the adjacent baffle plates is 300-1000mm, and the distance between the baffle plate arranged at the bottommost part of the steam chamber and the lower non-condensable gas outlet is 10-100 mm.

Further, the distance between the upper noncondensable gas outlet and the upper tube plate is 1-20mm, and the distance between the lower noncondensable gas outlet and the lower tube plate is 200-400 mm.

Further, the distance between the condensed water outlet and the lower tube plate is 1-5 mm.

Further, at least one fixing rod is vertically arranged between the upper tube plate and the lower tube plate.

Furthermore, the lower material water chamber is composed of a lower end cover covered on the lower tube plate, the lower end cover is connected with the lower tube plate through a lower end cover flange, the material water inlet is arranged on the lower end cover, and a lower thermometer interface is further arranged on the lower end cover.

Furthermore, the upper material water chamber is formed by an upper end cover covered on the upper pipe plate, the upper end cover is connected with the upper pipe plate through an upper end cover flange, a material water outlet is formed in the upper end cover, and an upper thermometer interface is further arranged on the upper end cover.

Furthermore, the heat exchange tube bundle comprises a plurality of heat exchange tubes, and the arrangement mode among the plurality of heat exchange tubes is regular triangle.

The implementation of the invention has at least the following advantages:

1. according to the heating device, the upper material water chamber and the lower material water chamber are arranged at the upper end and the lower end of the steam chamber, and the heat exchange tube bundle communicated with the upper material water chamber and the lower material water chamber is arranged in the steam chamber, so that the material water can be preheated by fully utilizing steam heat, the stable process operation is ensured, and the heat consumption is effectively saved;

2. the heating device further reasonably arranges the positions of the steam inlets, the space between the baffle plates, the number and the positions of the non-condensable gas outlets, the arrangement mode of the heat exchange tube bundles, the positions of the condensed water outlets and the like, so that the heat transfer coefficient of the heating device is greatly improved;

3. compared with the traditional heating device for evaporating high-salt high-organic-matter wastewater, the heating device provided by the invention has the advantages that the steam consumption for heating equivalent material water under the condition of the same quality of steam is less, the heat transfer efficiency is high, the heat exchange area is small, the equipment investment is saved, and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of a heating apparatus for evaporation treatment of high-salinity high-organic wastewater according to an embodiment of the present invention;

fig. 2 is a schematic view of an arrangement structure of a heat exchange tube bundle according to an embodiment of the present invention.

Description of reference numerals:

1: a material water inlet; 2: a material water outlet; 3: a lower end cover; 4: an upper end cover; 5: a material discharging water chamber; 6: a material feeding water chamber; 7: a lower thermometer interface; 8: an upper thermometer interface; 9: a lower end cap flange; 10: an upper end cap flange; 11: a lower tube plate; 12: an upper tube sheet; 13: a lower noncondensable gas outlet; 14: an upper noncondensable gas outlet; 15: a steam inlet; 16: a condensed water outlet; 17: a jacket; 18: a housing; 19: a heat exchange tube bundle; 20: fixing the rod; 21: a right baffle plate; 22: supporting a lug; 23: a steam chamber; 24: a nameplate; 25: a left baffle plate; 26: an upper end cap side wall; 27: a lower end cap side wall.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms also include the plural forms unless the context clearly dictates otherwise, and further, it is understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, devices, components, and/or combinations thereof.

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1 and 2, the heating device for evaporation treatment of high-salinity high-organic wastewater of the present embodiment includes a steam chamber 23, a lower material water chamber 5, an upper material water chamber 6 and a heat exchange tube bundle 19, the lower material water chamber 5 and the upper material water chamber 6 are relatively isolated and disposed at the lower end and the upper end of the steam chamber 23, the lower material water chamber 5 and the upper material water chamber 6 are respectively provided with a material water inlet 1 and a material water outlet 2, a plurality of baffle plates (i.e., a right baffle plate 21 and a left baffle plate 25) are disposed inside the steam chamber 23 along the height direction at intervals and in a staggered manner, the steam chamber 23 is provided with a steam inlet 15, a non-condensable gas outlet and a condensed water outlet 16, the heat exchange tube bundle 19 is disposed inside the steam chamber 23, and the lower end and the upper end of the heat exchange tube bundle 19 are respectively communicated with the lower material water chamber 5 and the upper material water chamber 6.

In the heating device of the present embodiment, the steam chamber 23 is a place where the material water is heat-exchanged by the introduced steam, and the specific structure thereof is not strictly limited. In one embodiment, the steam chamber 23 may be enclosed by the casing 18, the upper tube plate 12 and the lower tube plate 11, and the upper tube plate 12 and the lower tube plate 11 are hermetically fixed at the upper end and the lower end of the casing 18, so as to form a closed cavity structure; the housing 18 may be a cylindrical housing or the like. In addition, at least one fixing rod 20 can be vertically arranged between the upper tube plate 12 and the lower tube plate 11, so that the overall stability of the heating device is ensured; the number and the arrangement mode of the fixing rods 20 are not strictly limited, and the fixing rods can be reasonably arranged according to actual needs.

The steam inlet 15 arranged on the steam chamber 23 is mainly used for enabling steam to enter the steam chamber 23, the non-condensable gas outlet is mainly used for pumping the non-condensable gas out of the steam chamber 23, and the condensed water outlet 16 is mainly used for enabling condensed water formed by heat exchange to flow out of the steam chamber 23; the structures and the installation positions of the steam inlet 15, the noncondensable gas outlet and the condensed water outlet 16 are not strictly limited. Specifically, the non-condensable gas outlet may include an upper non-condensable gas outlet 14 disposed at an upper portion of the housing 18 and a lower non-condensable gas outlet 13 disposed at a lower portion of the housing 18, the steam inlet 15 may be disposed at an upper portion of the housing 18 below the upper non-condensable gas outlet 14, and the condensed water outlet 16 may be disposed at a bottom portion of the housing 18.

The baffle plate arranged in the steam chamber 23 is mainly used for changing the flow direction of the steam, thereby improving the heat transfer effect; the number and the positions of the baffles are not strictly limited, and the baffles can be reasonably arranged according to actual needs. Specifically, the baffles may be staggered at intervals along the height direction of the steam chamber 23, wherein the first baffle may be a right baffle 21 horizontally fixed on the right side of the inner wall of the casing, the second baffle may be a left baffle 25 horizontally fixed on the left side of the inner wall of the casing at intervals, the third baffle may be a right baffle 21 horizontally fixed on the right side of the inner wall of the casing at intervals, and so on. The distance between the adjacent baffles may be set to 300-.

In the steam chamber 23, the distance between the upper noncondensable gas outlet 14 and the upper tube plate 12 may be set to 1-20mm, and the distance between the lower noncondensable gas outlet 13 and the lower tube plate 11 may be set to 200-400 mm; furthermore, the distance between the condensate outlet 16 and the lower tube plate 11 is 1-5 mm. The heat transfer coefficient of the heating device is greatly improved by reasonably arranging the positions of the steam inlets 15, the distance between the baffle plates, the number and the positions of the non-condensable gas outlets, the arrangement mode of the heat exchange tube bundles 19, the positions of the condensed water outlets 16 and the like.

In the heating device of the embodiment, the lower material water chamber 5 and the upper material water chamber 6 are mainly used for circulation and heat exchange of material water; the feed water is heated in the steam chamber 23 by the steam as it flows through the heat exchanger tube bundle 19, for heat exchange purposes. The tube pass of the heat exchange tube bundle 19 is not strictly limited, and for example, a single-tube pass or a multi-tube pass heating mode may be adopted, which is favorable for improving the heat exchange efficiency.

Specifically, the lower material water chamber 5 may be composed of a lower end cover 3 covering the lower tube plate 11, the lower end cover 3 is connected to the lower tube plate 11 through a lower end cover flange 9, the material water inlet 1 is arranged on the side wall 27 of the lower end cover, and the lower temperature meter interface 7 may be further arranged on the lower end cover 3. Similarly, the upper material water chamber 6 may be composed of an upper end cover 4 covering the upper tube plate 12, the upper end cover 4 is connected with the upper tube plate 12 through an upper end cover flange 10, the material water outlet 2 is arranged on the side wall 26 of the upper end cover, and an upper thermometer port 8 may also be arranged on the upper end cover 4.

It is understood that the heat exchange tube bundle 19 includes a plurality of heat exchange tubes, and the arrangement manner between the plurality of heat exchange tubes is not strictly limited; as shown in fig. 2, the arrangement between the plurality of heat exchange tubes may be regular triangles. By optimizing the heat exchange tube bundle 19 in the above manner, the heat transfer coefficient of the heating device is further improved.

The heating device of this embodiment may also include other auxiliary components such as a jacket 17, lugs 22, a nameplate 24, etc. provided on the housing 18, all in a conventional manner.

In the heating device of the embodiment, the upper material water chamber 6 and the lower material water chamber 5 are arranged at the upper end and the lower end of the steam chamber 23, and the heat exchange tube bundle 19 communicated with the upper material water chamber 6 and the lower material water chamber 5 is arranged in the steam chamber 23, so that the material water can be preheated by fully utilizing steam heat, the stable process operation is ensured, and the heat consumption is effectively saved; meanwhile, the heat transfer coefficient of the heating device is greatly improved by reasonably arranging the positions of the steam inlets 15, the distance between the baffle plates, the number and the positions of the non-condensable gas outlets, the arrangement mode of the heat exchange tube bundles 19, the positions of the condensed water outlets 16 and the like.

Compare with the heating device of high organic matter waste water of traditional evaporation treatment high salt, the heating device of this embodiment heats the required steam quantity of equivalent material water under with quality steam condition and is few, has advantages such as heat transfer efficiency is high, the heat transfer area is little, equipment investment province.

Example 2

In the embodiment, the heating device in the embodiment 1 is adopted to evaporate the high-salinity high-organic wastewater; wherein, the distance between the adjacent baffle plates 21 is 600mm, and the distance between the baffle plate 25 arranged at the bottommost part of the steam chamber 23 and the lower non-condensable gas outlet 13 is 60 mm; the distance between the upper noncondensable gas outlet 14 and the upper tube plate 12 is 10mm, and the distance between the lower noncondensable gas outlet 13 and the lower tube plate 11 is 300 mm; the distance between the condensate outlet 16 and the lower tube plate 11 is 3 mm.

The quality indexes of the high-salt high-organic-matter wastewater are as follows: pH 6-8, COD 150mg/L, ammonia nitrogen 25mg/L, Total hardness (as CaCO)₃) 10mg/L, total alkalinity (as CaCO)₃) 300mg/L, 27500mg/L chloride ion and 113500 mus/cm conductivity.

The evaporation process comprises the following steps: heat exchange area of 50m in the heating apparatus of example 1²0.3MPaG saturated steam is continuously input from a steam inlet 15, and the 60 ℃ high-salinity high-organic-matter wastewater is 100m³The flow rate/h is continuously fed in from the material water inlet 1, and the readings of the lower thermometer 7 and the upper thermometer 8 are recorded at intervals of 10min, and the duration is 2 h.

After evaporation, the lower thermometer 7 records an average temperature of 60 ℃ and the upper thermometer 8 records an average temperature of 61.9 ℃.

Comparative example 1

This comparison example adopts conventional heating device as the contrast, and its specific structure is: a conventional fixed tube-plate heat exchanger comprises a tube box, a tube opening, a baffle plate, an upper tube plate, a lower tube plate and a plurality of mounting holes formed in the upper tube plate and the lower tube plate, wherein a plurality of tubes are fixedly arranged between the upper tube plate and the lower tube plate.

By adopting the conventional heating device, the heat exchange area is 50m²The conditions of water quality, water quantity, water temperature, steam conditions, observation time and the like of the high-salinity high-organic wastewater in the example 2 are completely the same as those of the example 2, and after evaporation, the average temperature recorded by the material inlet thermometer is 60 ℃ and the average temperature recorded by the material outlet thermometer is 61.5 ℃.

It can be seen that the heat transfer efficiency of the heating device of example 1 for evaporating high-salt high-organic wastewater is improved by about 26.7% compared with the conventional heating device.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.