阅读说明：本技术 一种用于脱除烟气颗粒物的陶瓷膜组件 (A ceramic membrane subassembly for desorption flue gas particulate matter ) 是由 李兆豪 张衡 陈海平 黄吉光 于 2019-11-07 设计创作，主要内容包括：本发明公开了一种用于脱除烟气颗粒物的陶瓷膜组件,包括底部水箱、顶部水箱、底部法兰盘、顶部法兰盘以及若干陶瓷膜管；底部水箱与底部法兰盘相连接,顶部水箱与顶部法兰盘相连接,陶瓷膜管穿过底部法兰盘和顶部法兰盘分别与底部水箱和顶部水箱相连通；底部水箱的下方设有入水口,顶部水箱的上方设有出水口；底部法兰盘上远离烟气入口的一侧设有引出口,引出口底部连接引出管；底部法兰盘上还设有一圈围栏,围栏将陶瓷膜管及引出口包围在内。本发明可以有效脱除烟气颗粒物,对于粒径小于1微米的颗粒物,也能保持较高的脱除效率；同时因利用了陶瓷膜,可以很好地脱除烟气中的水分、二氧化碳、硫氧化物,还可以在严苛的烟气环境中长时间工作。(The invention discloses a ceramic membrane component for removing flue gas particles, which comprises a bottom water tank, a top water tank, a bottom flange plate, a top flange plate and a plurality of ceramic membrane pipes, wherein the bottom water tank is connected with the top water tank through a pipeline; the bottom water tank is connected with the bottom flange, the top water tank is connected with the top flange, and the ceramic membrane tube penetrates through the bottom flange and the top flange to be respectively communicated with the bottom water tank and the top water tank; a water inlet is arranged below the bottom water tank, and a water outlet is arranged above the top water tank; a leading-out port is arranged on one side of the bottom flange plate far away from the flue gas inlet, and the bottom of the leading-out port is connected with a leading-out pipe; and a circle of fence is also arranged on the bottom flange plate and surrounds the ceramic membrane tube and the lead-out port. The invention can effectively remove the smoke particles, and can keep higher removal efficiency for the particles with the particle size less than 1 micron; meanwhile, because the ceramic membrane is utilized, the ceramic membrane can well remove moisture, carbon dioxide and sulfur oxides in the flue gas, and can work for a long time in a severe flue gas environment.)

1. A ceramic membrane component for removing smoke particles is characterized by comprising a bottom water tank (1), a top water tank (2), a bottom flange plate (3), a top flange plate (4) and a plurality of ceramic membrane pipes (5);

the bottom water tank (1) consists of a bottom water chamber (101) and a bottom outer edge flange (102) positioned above the bottom water chamber, and the top water tank (2) consists of a top water chamber (201) and a top outer edge flange (202) positioned below the top water chamber; a water inlet (6) is arranged below the bottom water chamber (101), a water outlet (7) is arranged above the top water chamber (201), and the water inlet (6) is connected with a water pump; the bottom water tank (1) is connected with the bottom flange plate (3) through the bottom outer edge flange (102), and the top water tank (2) is connected with the top flange plate (4) through the top outer edge flange (202); the top surface of the bottom flange plate (3) and the bottom surface of the top flange plate (4) are correspondingly provided with a plurality of trapezoidal holes for penetrating and fixing the ceramic membrane tubes (5); two ends of the ceramic membrane tube (5) are respectively communicated with a corresponding water outlet pipe on the bottom water chamber (101) and a corresponding water inlet pipe on the top water chamber (201);

a leading-out opening (8) is formed in one side, far away from the flue gas inlet, of the bottom flange plate (3), and the bottom of the leading-out opening (8) is connected with a leading-out pipe (9); the bottom flange plate (3) is also provided with a circle of fence (10) for preventing pollution liquid flowing down along the ceramic membrane tube (5) from splashing everywhere, and the fence (10) surrounds the ceramic membrane tube (5) and the leading-out opening (8).

2. The ceramic membrane module for removing the flue gas particulate matter as claimed in claim 1, wherein: the ceramic membrane tube is characterized by further comprising a bearing rod (11), wherein the length of the bearing rod (11) is equal to that of the ceramic membrane tube (5), and two ends of the bearing rod (11) are respectively connected with the top surface of the bottom flange plate (3) and the bottom surface of the top flange plate (4).

3. The ceramic membrane module for removing the flue gas particulate matter as claimed in claim 1, wherein: the top surface of the bottom flange plate (3) and the bottom surface of the top flange plate (4) are respectively provided with a circle of sealing channel, and a sealing ring (12) is arranged in each sealing channel.

4. The ceramic membrane module for removing the flue gas particulate matter as claimed in claim 1, wherein: the ceramic membrane tube is characterized in that internal threads are arranged in the trapezoidal holes, and the ceramic membrane tube (5) is extruded and fixed in the trapezoidal holes through screwed nuts.

5. The ceramic membrane module for removing the flue gas particulate matter according to claim 1 or 4, characterized in that: the graphite gasket is sleeved at two ends of the ceramic membrane tube (5) and located between the outer side face of the ceramic membrane tube (5) and the inner side face of the trapezoidal hole.

6. The ceramic membrane module for removing the flue gas particulate matter as claimed in claim 1, wherein: two crossed partition plates (13) are respectively arranged in the bottom water chamber (101) and the top water chamber (201), and a plurality of through holes (14) are formed in the partition plates (13).

7. The ceramic membrane module for removing the flue gas particulate matter of claim 6, wherein: the number and the positions of the holes of each partition plate (13) are mirror-symmetrical about the center of the partition plate (13).

8. The ceramic membrane module for removing the flue gas particulate matter as claimed in claim 1, wherein: the bottom water chamber (101) and the top water chamber (201) are larger than or equal to the bottom area of the ceramic membrane tube arrangement region (15) and smaller than the bottom areas of the bottom flange (3) and the top flange (4).

9. The ceramic membrane module for removing the flue gas particulate matter as claimed in claim 1, wherein: the ceramic membrane tubes (5) are arranged in a staggered manner along the flow direction of flue gas.

10. The ceramic membrane module for removing flue gas particulates according to any one of claims 1 to 4 and 6 to 9, wherein: when the ceramic membrane module is integrally installed in a flue, an installation inclination angle with the inclination angle degree not more than 1 degree needs to be formed along the flow direction of flue gas, one end close to the inlet side of the flue gas is slightly higher, and the other end far away from the inlet side of the flue gas is slightly lower.

Technical Field

The invention relates to the technical field of environmental engineering, in particular to a ceramic membrane component for removing smoke particles.

Background

The current commonly used flue gas particulate matter removing device mainly comprises an electrostatic dust collector, a bag-type dust collector, a Venturi dust collector, an ultrasonic dust collector and the like, and the removing efficiency of the traditional particulate matter removing device is lower for particulate matters with the particle size smaller than 1 micron.

In addition, the wet desulphurization technology is a desulphurization technology commonly adopted in domestic thermal power plants at present, the desulphurization mode adopts gypsum slurry as an absorbent, and when sulfur oxides are removed from the flue gas, part of gypsum liquid drops with smaller particle size can be taken out from the desulphurization tower, so that the concentration of particulate matters in the tail flue gas is further increased.

Therefore, how to provide a new flue gas particulate removal device, which can effectively overcome the above problems, is a direction that needs to be intensively studied by those skilled in the art.

Disclosure of Invention

Therefore, the invention aims to provide a ceramic membrane component for removing flue gas particles, which comprises a bottom water tank, a top water tank, a bottom flange plate, a top flange plate and a plurality of ceramic membrane pipes, wherein the bottom water tank is connected with the top water tank;

the bottom water tank consists of a bottom water chamber and a bottom outer edge flange positioned above the bottom water chamber, and the top water tank consists of a top water chamber and a top outer edge flange positioned below the top water chamber; a water inlet is arranged below the bottom water chamber, a water outlet is arranged above the top water chamber, and the water inlet is connected with a water pump; the bottom water tank is connected with the bottom flange plate through the bottom outer edge flange, and the top water tank is connected with the top flange plate through the top outer edge flange; the top surface of the bottom flange plate and the bottom surface of the top flange plate are correspondingly provided with a plurality of trapezoidal holes for penetrating and fixing the ceramic membrane tubes; two ends of the ceramic membrane tube are respectively communicated with a corresponding water outlet pipe on the bottom water chamber and a corresponding water inlet pipe on the top water chamber;

a leading-out port is arranged on one side, far away from the flue gas inlet, of the bottom flange plate, and the bottom of the leading-out port is connected with a leading-out pipe; and a circle of fence for preventing the pollution liquid flowing down along the ceramic membrane pipe from splashing everywhere is also arranged on the bottom flange plate, and the ceramic membrane pipe and the leading-out port are surrounded by the fence.

The invention provides a ceramic membrane component for removing flue gas particles, which can effectively remove the flue gas particles and can also keep higher removal efficiency for particles with the particle size less than 1 micron; meanwhile, because the ceramic membrane is utilized, the invention can well remove moisture, carbon dioxide and oxysulfide in the flue gas and can work for a long time in a severe flue gas environment.

The ceramic membrane component for removing the flue gas particles realizes the application of a heterogeneous condensation technology on a porous membrane material, and flue gas carrying the particles can be condensed on the outer surface of the ceramic membrane tube to form a liquid membrane by utilizing the heterogeneous condensation technology; when the particulate matter meets the liquid film, the particulate matter is finally captured by the liquid film to form a polluted liquid under the synergistic action of thermophoresis effect, inertial collision, diffusion electrophoresis and Brownian diffusion; under the action of gravity, the polluted liquid flows down along the outer surface of the ceramic membrane tube and is finally effectively collected and discharged.

On the basis of the technical scheme, the invention can be improved as follows:

preferably, the ceramic membrane tube further comprises a bearing rod, the length of the bearing rod is equal to that of the ceramic membrane tube, and two ends of the bearing rod are respectively connected with the top surface of the bottom flange plate and the bottom surface of the top flange plate.

The bearing rod is mainly used for bearing the weight of the top flange plate and the top water tank which are positioned above, and the phenomenon that the ceramic membrane pipe is damaged due to overlarge pressure of the top flange plate and the top water tank is avoided.

More preferably, the rod diameter of the bearing rod is equal to the outer diameter of the ceramic membrane tube, and the bearing rod is connected with the top surface of the bottom flange plate and the bottom surface of the top flange plate through bolts.

Preferably, the top surface of the bottom flange plate and the bottom surface of the top flange plate are respectively provided with a circle of sealing channel, and sealing rings are arranged in the sealing channels. The sealing channel and the sealing ring can ensure the connection tightness of the flange plate and the water tank.

More preferably, the sealing channel has a depth of no more than 3 mm and a width of no more than 10 mm.

Preferably, an internal thread is arranged in the trapezoidal hole, and the ceramic membrane tube is extruded and fixed in the trapezoidal hole through a screwed nut.

Preferably, graphite gaskets are sleeved at two ends of the ceramic membrane tube and are positioned between the outer side surface of the ceramic membrane tube and the inner side surface of the trapezoidal hole.

The graphite gaskets can ensure the connection tightness of the ceramic membrane tube and the top flange and the bottom flange, and the graphite gaskets are sleeved at two ends of the ceramic membrane tube during installation; when the ceramic membrane assembly works, the ceramic membrane assembly is positioned in a smoke environment, the environment temperature is high, and the graphite gasket is subjected to thermal expansion, so that a gap between the ceramic membrane tube and the flange plate can be effectively filled, and good sealing performance is kept.

Preferably, two crossed partition plates are respectively arranged in the bottom water chamber and the top water chamber, and a plurality of through holes are formed in the partition plates.

The water chamber is equally divided into four parts by the two crossed partition plates, and each partition plate is provided with a plurality of through holes, so that the cooling water flow field inside the water chamber is uniformly distributed.

More preferably, the separator has a thickness of no more than 10 mm; in order to ensure the strength of the partition plate, the number of the openings on the partition plate is not more than 20.

Preferably, the number and the positions of the openings of each partition plate are mirror-symmetrical about the center of the partition plate.

Preferably, the bottom areas of the bottom water chamber and the top water chamber are larger than or equal to the bottom area of the ceramic membrane tube arrangement area and smaller than the bottom areas of the bottom flange plate and the top flange plate.

Preferably, a plurality of ceramic membrane tubes are arranged in a staggered manner along the flow direction of the flue gas.

Preferably, when the ceramic membrane module is integrally installed in a flue, an installation inclination angle with an inclination angle degree not more than 1 degree is formed along the flow direction of flue gas, the end close to the inlet side of the flue gas is slightly higher, and the end far away from the inlet side of the flue gas is slightly lower, so that the polluted liquid can flow out of the ceramic membrane module through the outlet and the outlet pipe.

Preferably, all parts in the ceramic membrane module, which are contacted with the flue gas, are made of 2205 stainless steel, and the parts which are only contacted with the cooling water are made of 304 stainless steel.

By adopting the technical scheme, compared with the prior art, the invention has the beneficial effects that:

(1) the invention can effectively remove the smoke particles and can keep higher removal efficiency for the particles with the particle size less than 1 micron.

(2) The parts of the structure of the ceramic membrane module, which are contacted with the flue gas, are made of 2205 stainless steel and inorganic ceramic, and the two materials are corrosion-resistant materials, so that the ceramic membrane module can work for a long time in a severe flue gas environment.

(3) The ceramic membrane component is sealed by the graphite gasket and the sealing ring, so that the ceramic membrane component can be ensured to keep good sealing performance in high-temperature and high-pressure environments;

(4) the bottom flange plate is provided with the fence, the lead-out opening and the lead-out pipe, so that formed polluted liquid can be effectively collected and discharged.

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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a front view of a ceramic membrane module for removing flue gas particulates according to the present invention.

FIG. 2 is a sectional view taken along line A-A of FIG. 1 according to the present invention.

Figure 3 the attached drawing is a front view of the top tank of the present invention.

Figure 4 the attached drawing is a top view of the top tank of the present invention.

FIG. 5 is a sectional view taken along line A-A of FIG. 4 according to the present invention.

FIG. 6 is a sectional view taken along line B-B of FIG. 4 according to the present invention.

Wherein, in the figure,

1-a bottom water tank, 101-a bottom water chamber, 102-a bottom outer edge flange; 2-a top water tank, 201-a top water chamber, 202-a top outer edge flange, 2021-a connecting hole III; 3-a bottom flange plate, 301-a connecting hole II; 4-a top flange plate; 5-ceramic membrane tube; 6-water inlet; 7-water outlet; 8-a lead-out port; 9-an eduction tube; 10-a fence; 11-a load-bearing bar; 12-a sealing ring; 13-a separator; 14-a through hole; 15-ceramic membrane tube arrangement zone.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.