CN214936168U - Evaporating pot for coal bed gas produced water - Google Patents

Abstract

The utility model discloses a coal bed gas production water evaporating pot relates to coal bed gas production water processing technology field, has solved that current coal bed gas production water evaporating pot crystallization product quality is lower, the crystal smugglies mother liquor secretly and the little technical problem of crystallization particle. The coal bed gas produced water evaporating pot comprises an evaporating pot body (1), a circulating cylinder (2), a crystal growing pot (3), a heating chamber (4), a preheating device (5), a circulating pump (6), a separator (7), a collector (8) and a washer (9). The utility model discloses carry out the evaporation treatment to coal bed gas produced water in can being used to the processing of coal bed gas produced water. The utility model relates to a coal bed gas extraction water evaporating pot simple structure, manufacturing cost is lower, can improve the crystallization quality of inorganic salt, avoids the crystal to smuggle the mother liquor secretly.

Description

Evaporating pot for coal bed gas produced water

Technical Field

The utility model relates to a coal bed gas extraction water processing technology field, concretely relates to coal bed gas extraction water evaporating pot.

Background

With the increasing demand for energy in economic development and the need for safe production in coal mines, more and more people are concerned about coal bed gas development. The large-scale development of the coal bed gas can relieve the energy crisis, reduce the pollution of direct emission of gas to the environment to a certain extent, and more importantly, reduce the danger of coal mine coal and gas outburst. Along with the increasing of the mature investment scale of the coal bed gas development process technology, the scale of the coal bed gas well is increased rapidly. The coal bed gas is mainly generated in a coal reservoir, and the generation characteristics of the coal bed gas determine that gas is mainly extracted from the ground through drainage at present. Because the discharged water and gas share one shaft, when the gas production rate is high during the drainage and the production, part of the gas in the ground drainage pipeline is mixed and discharged, and the resource waste is caused. Meanwhile, the quality and the quantity of the water produced by the coal bed gas are greatly changed, and the method is mainly characterized in that the water quality is alkalescent (the pH is 7.5-8.4), contains a large amount of suspended matters and high salt content (the TDS is between 4000 and 5000), and partial heavy metals and fluoride ions exceed the standard, so that soil, rivers, lakes and even underground water can be polluted, and the whole ecological system is damaged.

The existing evaporating pot has the technical problems of low quality of crystallized products, mother liquor carried by crystals, small crystallized particles and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a coal bed gas extraction water evaporating pot, below through at the evaporating pot jar body sets up the circulation section of thick bamboo, and set up the circulation section of thick bamboo and educate brilliant jar, educate brilliant jar and circulation section of thick bamboo intercommunication, it is big to make the crystallized salt grain size, set up the scrubber simultaneously in the collector below, wash and grade the crystal, improve product quality, it smugglies mother liquor volume secretly to reduce the crystal, reduce the mother liquor circulation after the crystal separation, and set up pre-heating device below the heating chamber, improve the work efficiency of whole device, it is lower to have solved current coal bed gas extraction water evaporating pot crystallization product quality, the crystal smugglies mother liquor secretly and the little technical problem of crystalline particles. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a coal bed gas produced water system, which comprises an evaporation tank body, a crystal culturing tank, a heating chamber and a separator; wherein:

preferably, the evaporation tank body is arranged on the crystal growing tank;

preferably, a circulation cylinder is further arranged inside the crystal growing tank and is installed below the tank body of the evaporation tank;

preferably, the evaporating pot body is connected with the heating chamber through a conveying pipe;

preferably, a preheating device is connected below the heating chamber;

preferably, one end of the separator is connected with the preheating device through a conveying pipe, and the other end of the separator is connected with the crystal growing tank through a conveying pipe;

preferably, a circulating pump is further arranged on the conveying pipe of the separator and the preheating device;

preferably, a collector and a washer are also arranged below the crystal growing tank.

Alternatively or preferably, the scrubber is mounted below the collector.

Optionally or preferably, the evaporation tank body is further provided with a steam outlet.

Alternatively or preferably, the heating chamber is further provided with a condensate drain and a steam inlet.

Optionally or preferably, the separator is further provided with a mother liquid outlet and a produced water inlet.

Optionally or preferably, the washer is further provided with a discharge hole, a washing liquid inlet, a sight glass and a sewage draining outlet.

Optionally or preferably, a motor hot bar is arranged in the preheating device.

Based on the technical scheme, the following technical effects can be generated:

the embodiment of the utility model provides a coal bed gas produced water evaporating pot carries out the evaporation treatment to coal bed gas produced water in can being used to the processing of coal bed gas produced water. The utility model relates to a coal bed gas extraction water evaporating pot sets up a circulation section of thick bamboo through the below at the evaporating pot jar body, and set up a circulation section of thick bamboo and educate brilliant jar, educate brilliant jar and circulation section of thick bamboo intercommunication, it is big to make the crystallized salt crystal grain diameter, set up the scrubber simultaneously in the collector below, wash and grade the crystal, improve product quality, reduce the crystal and smuggle mother liquor volume secretly, reduce the mother liquor circulation after the crystal separation, and set up pre-heating device below the heating chamber, improve the work efficiency of whole device, it is lower to have solved current coal bed gas extraction water evaporating pot crystallization product quality, the crystal smugglies mother liquor secretly and the little technical problem of crystal grain. The utility model relates to a coal bed gas extraction water evaporating pot simple structure, manufacturing cost is lower, can improve the crystallization quality of inorganic salt, avoids the crystal to smuggle the mother liquor secretly.

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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the scrubber of the present invention;

in the figure: 1. a tank body of the evaporating tank; 101. a steam outlet; 2. a circulation cylinder; 3. a crystal growing tank; 4. a heating chamber; 401. a condensed water discharge port; 402. a steam inlet; 5. a preheating device; 6. a circulation pump; 7. a separator; 701. a mother liquid discharge port; 702. a produced water feed inlet; 8. a collector; 9. a scrubber; 901. a discharge port; 902. a washing liquid inlet; 903. a sight glass; 904. a sewage draining outlet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

As shown in fig. 1:

the utility model provides a coal bed gas produced water evaporating pot, which comprises an evaporating pot body 1, a crystal cultivating pot 3, a heating chamber 4 and a separator 7; wherein:

the evaporation tank body 1 is arranged on the crystal growing tank 3;

the inside of the crystal growing tank 3 is also provided with a circulating cylinder 2 which is arranged below the evaporation tank body 1;

the evaporating pot body 1 is connected with the heating chamber 4 through a conveying pipe;

a preheating device 5 is connected below the heating chamber 4;

one end of the separator 7 is connected with the preheating device 5 through a conveying pipe, and the other end of the separator is connected with the crystal growing tank 3 through a conveying pipe;

the separator 7 and the conveying pipe of the preheating device 5 are also provided with a circulating pump 6;

a collector 8 and a washer 9 are also arranged below the crystal growing tank 3.

As an alternative embodiment, the scrubber 9 is mounted below the collector 8.

As an optional embodiment, the evaporation tank body 1 is further provided with a steam outlet 101.

In an alternative embodiment, the heating chamber 4 is further provided with a condensate drain 401 and a steam inlet 402.

In an optional embodiment, the separator 7 is further provided with a mother liquor outlet 701 and a produced water inlet 702.

As an optional embodiment, the washer 9 is further provided with a discharge hole 901, a washing liquid inlet 902, a sight glass 903 and a sewage draining outlet 904.

As an alternative embodiment, a motor hot bar is arranged in the preheating device 5.

The utility model relates to a working process of coal bed gas extraction water evaporating pot: coal bed gas produced water enters a separator 7 through a produced water feeding hole 702, the produced water entering the separator is conveyed by a circulating pump 6, is preheated by a preheating device 5 and then enters a heating chamber 4, high-temperature steam is introduced into a steam inlet 402 of the heating chamber 4, condensate water is discharged from a condensate discharging hole 401, the circulating pump conveys the produced water after heat exchange into an evaporating pot tank body 1 for evaporation and crystallization, primary mother liquor is obtained, and evaporated secondary steam is discharged from a steam outlet 101; the first crystallization small crystal grains and the first mother liquor pass through the inner circulation cylinder 2 of the evaporation tank body 1 and downwards, the salt grains with large grain size enter the collector 8, the first mother liquor and the fine crystal grains enter the crystal cultivation tank 3 along the outer wall direction of the circulation cylinder 2 of the evaporation tank body 1, the crystal cultivation is carried out after the first mother liquor and the fine crystal grains stay in the crystal cultivation tank 3 for 0.1 to 6 hours, and the absolute supersaturation degree is controlled, so that the crystal grains with gradually increased grain size and the second mother liquor are obtained; the crystal grains with gradually increased particle size and the produced water after the second mother solution and the next round of heat exchange enter the tank body of the evaporation tank to carry out the next round of evaporation crystallization; the crystal grains entering the washer 9 are washed by the washing liquid entering the washing liquid inlet 902, the washed sewage is discharged from the sewage outlet 904, and the washed crystal grains are taken out from the discharge port 901.

Claims (7)

1. An evaporation tank for coal bed gas produced water is characterized by comprising an evaporation tank body (1), a crystal growing tank (3), a heating chamber (4) and a separator (7); wherein:

the evaporation tank body (1) is arranged on the crystal growing tank (3);

a circulating cylinder (2) is also arranged in the crystal growing tank (3), and is arranged below the evaporation tank body (1);

the evaporating pot body (1) is connected with the heating chamber (4) through a conveying pipe;

a preheating device (5) is connected below the heating chamber (4);

one end of the separator (7) is connected with the preheating device (5) through a conveying pipe, and the other end of the separator is connected with the crystal growing tank (3) through a conveying pipe;

the separator (7) and the conveying pipe of the preheating device (5) are also provided with a circulating pump (6);

a collector (8) and a washer (9) are also arranged below the crystal cultivating tank (3).

2. The coal bed gas produced water evaporating pot of claim 1, wherein: the washer (9) is mounted below the collector (8).

3. The coal bed gas produced water evaporating pot of claim 1, wherein: the evaporating pot body (1) is also provided with a steam outlet (101).

4. The coal bed gas produced water evaporating pot of claim 1, wherein: the heating chamber (4) is also provided with a condensate water outlet (401) and a steam inlet (402).

5. The coal bed gas produced water evaporating pot of claim 1, wherein: the separator (7) is also provided with a mother liquor discharge hole (701) and a produced water feed hole (702).

6. The coal bed gas produced water evaporating pot of claim 1, wherein: the washer (9) is also provided with a discharge hole (901), a washing liquid inlet (902), a sight glass (903) and a sewage outlet (904).

7. The coal bed gas produced water evaporating pot of claim 1, wherein: a motor heating rod is arranged in the preheating device (5).

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