Graphite falling film absorber distributor

Abstract

The utility model discloses a distributor of a graphite falling film absorber, which relates to the technical field of chemical equipment and comprises a distributor graphite outer ring, a distributor inner block, a distributor tower section and a gas inlet seal head which are connected by an upper cover plate and a pressing flange in a pressing manner, and the upper cover plate is provided with a gas inlet communicated with the distributor tower section. The distributor graphite outer ring and the distributor inner block are connected to form an absorption liquid inlet cavity, an absorption liquid inlet communicated with the absorption liquid inlet cavity is formed in the distributor graphite outer ring, and a lower port of the distributor inner block is connected with a heat exchange absorption block in a sealed mode. The liquid inlet and outlet small holes in triangular distribution and the longitudinal holes in the distributor inner block are arranged, so that the liquid around the distribution cup is ensured to be uniformly distributed, the absorption liquid can form a film in the absorption tube very well after passing through the distribution cup, and the absorption efficiency of the falling film absorber is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical equipment technical field, concretely relates to a graphite falling film absorber distributor. BACKGROUND

[0002] In chlor-alkali industry, falling film absorber is commonly used to absorb by-product hydrogen chloride gas to form hydrochloric acid, and the existing falling film absorber distributor is composed of liquid inlet, gas inlet, absorption tower section and pressure stabilizing ring.

[0003] The function of the pressure stabilizing ring makes the absorption liquid from the liquid inlet again distribute after entering the pressure stabilizing ring, and in actual operation, the liquid flow rate is often too large, the liquid does not flow around the pressure stabilizing ring, but there is liquid near the pressure stabilizing ring, and the liquid is difficult to reach the far place, which leads to uneven distribution of the liquid in the absorption block, poor film forming effect and reduced falling film absorption effect of the distributor. SUMMARY

[0004] The utility model discloses a graphite falling film absorber distributor to solve the problem of uneven liquid distribution, poor film forming effect and reduced falling film absorption effect in the existing distributor.

[0005] A graphite falling film absorber distributor comprises a distributor graphite outer ring, a distributor inner block, a distributor tower section and a gas inlet head connected by an upper cover plate and a pressure ring, the upper cover plate is provided with a gas inlet communicated with the distributor tower section, the distributor graphite outer ring and the distributor inner block are connected to form an absorption liquid inlet cavity, the distributor graphite outer ring is provided with an absorption liquid inlet communicated with the absorption liquid inlet cavity, and the lower end of the distributor inner block is sealingly connected with a heat exchange absorption block.

[0006] Preferably, the distributor graphite outer ring is composed of a liquid inlet pipe, a liquid inlet pipe clamp and an outer ring cylinder, the upper surface and the lower surface of the outer ring cylinder are respectively provided with uniformly distributed second water lines and first water lines, and the inner diameter of the upper ring of the outer ring cylinder is smaller than that of the lower ring.

[0007] Preferably, the distributor inner block is provided with a transverse liquid inlet groove, the bottom end of the transverse liquid inlet groove is flush with the bottom end of the liquid inlet pipe, the transverse liquid inlet groove is provided with uniformly distributed liquid inlet outlet holes, and the step of the distributor inner block is sealingly connected with the first water lines.

[0008] Preferably, the heat exchange absorption block is provided with heat exchange absorption block longitudinal holes, the distributor inner block is provided with longitudinal holes with the same distribution as the heat exchange absorption block longitudinal holes, and the upper end of the longitudinal holes is provided with a distribution cup.

[0009] Preferably, the distribution cup is integrally formed by a positioning plate and a distribution ring, the upper end of the distribution ring is provided with overflow ports uniformly distributed in a tangent line, and the liquid inlet outlet holes and the longitudinal holes of the heat exchange absorption blocks are triangularly distributed.

[0010] The graphite falling film absorber distributor has the advantages that: the liquid around the distribution cup is uniformly distributed through the triangularly distributed liquid inlet outlet holes and the longitudinal holes of the distributor inner blocks, the absorption liquid can be well formed into a film in the absorption pipe after passing through the distribution cup, the absorption efficiency of the falling film absorber is improved, and when parking and maintenance are performed, residual liquid can be discharged through the lowest point in the pipeline discharge port of the absorption liquid inlet, so that residual hydrochloric acid in the distributor tower section is avoided, and the safety hidden danger existing in maintenance is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 The utility model discloses a three-dimensional structure schematic diagram.

[0012] Fig. 2 The utility model discloses a structure schematic diagram of the graphite outer ring of the distributor.

[0013] Fig. 3 The utility model discloses a structure schematic diagram of the graphite outer ring of the distributor.

[0014] Fig. 4 The utility model discloses a structure schematic diagram of the graphite outer ring of the distributor.

[0015] Wherein, 100, the graphite outer ring of the distributor;101, liquid inlet pipe;102, liquid inlet pipe clamp;103, outer ring cylinder;104, first water line;105, second water line;200, distributor inner block;203, transverse liquid inlet groove;204, liquid inlet outlet hole;205, distribution cup;206, longitudinal hole;207, positioning plate;208, distribution ring;209, overflow port;300, distributor tower section;301, gas inlet head;302, upper cover plate;303, pressure land;304, absorption liquid inlet cavity;305, heat exchange absorption block;306, heat exchange absorption block longitudinal hole;307, gas inlet;308, absorption liquid inlet. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described in combination with specific embodiments.

[0017] For example, Figs. 1 to 4As shown, a graphite falling film absorber distributor includes a distributor graphite outer ring 100, a distributor inner block 200, a distributor tower section 300 and a gas inlet head 301 connected by compression connection using an upper cover plate 302 and a compression ring 303, which is simple in structure and convenient to install, the upper cover plate 302 is provided with a gas inlet 307 communicated with the distributor tower section 300, the distributor graphite outer ring 100 and the distributor inner block 200 are connected to form a liquid inlet cavity 304, the distributor graphite outer ring 100 is provided with a liquid inlet 308 communicated with the liquid inlet cavity 304, and the lower end of the distributor inner block 200 is sealingly connected with a heat exchange absorption block 305.

[0018] In the embodiment, the distributor graphite outer ring 100 is composed of a liquid inlet pipe 101, a liquid inlet pipe clamp 102 and an outer ring cylinder 103, the upper surface and the lower surface of the outer ring cylinder 103 are respectively provided with uniformly distributed second water lines 105 and first water lines 104, and the inner diameter of the upper ring of the outer ring cylinder 103 is smaller than that of the lower ring.

[0019] The first water lines 104 and the second water lines 105 are arranged to be gasket sealed when compressed, and the different inner diameters of the outer ring cylinder 103 facilitate the formation of the cavity with the distributor inner block 200.

[0020] In the embodiment, the distributor inner block 200 is provided with a transverse liquid inlet groove 203, the bottom end of the transverse liquid inlet groove 203 is flush with the bottom end of the liquid inlet pipe 101, the transverse liquid inlet groove 203 is provided with uniformly distributed liquid inlet outlet holes 204, and the step of the distributor inner block 200 is sealingly compressed with the first water lines 104.

[0021] Through the arrangement that the bottom end of the transverse liquid inlet groove 203 is flush with the bottom end of the liquid inlet pipe 101, when parking for maintenance, the residual liquid can be completely discharged through the pipeline discharge port of the liquid inlet 308 at the lowest point, solving the problem that there is residual hydrochloric acid in the distributor tower section 300 in the past, which has a safety hazard in maintenance.

[0022] In the embodiment, the heat exchange absorption block 305 is provided with a heat exchange absorption block longitudinal hole 306, the distributor inner block 200 is provided with longitudinal holes 206 distributed in the same way as the heat exchange absorption block longitudinal hole 306, the upper end of the longitudinal hole 206 is provided with a distribution cup 205, the distribution cup 205 is integrally formed by a positioning plate 207 and a distribution ring 208, the upper end of the distribution ring 208 is provided with uniformly distributed tangent overflow ports 209, and the liquid inlet outlet holes 204 and the heat exchange absorption block longitudinal hole 306 are triangularly distributed.

[0023] The distribution cup 205 can be made of high-temperature-resistant polytetrafluoroethylene, or made of silicon carbide and graphite pipe. The distribution cup 205 made of high-temperature-resistant polytetrafluoroethylene is integrally formed by the positioning plate 207 and the distribution ring 208, and 2-5 groups can be integrally inserted and installed, thereby reducing labor intensity, and the integral forming increases the strength of the distribution ring 208, heightens unification, and is good in film forming effect.

[0024] Working process and principle: when the device is used, hydrogen chloride gas flows into the cavity of the distributor from the gas inlet 307, and the absorption liquid flows into the absorption liquid inlet 308. First, the absorption liquid flows into the absorption liquid inlet cavity 304 between the graphite outer ring 100 of the distributor and the inner block 200 of the distributor, and then flows into the horizontal liquid inlet groove 203. In the horizontal liquid inlet groove 203, the liquid flows uniformly from the liquid inlet outlet hole 204 above the horizontal liquid inlet groove 203 from bottom to top. The liquid inlet outlet hole 204 and the longitudinal hole 306 of the heat exchange absorption block are triangularly distributed and uniformly distributed around each longitudinal hole 206, so that the water flow is uniform in each place, the liquid around the distribution cup 205 is uniformly distributed, the absorption liquid can form a good film in the absorption tube after passing through the distribution cup 205, and the absorption efficiency of the falling film absorber is improved. When the liquid level rises to the upper edge of the distribution cup 205, the absorption liquid flows into the longitudinal hole 206 through the overflow port 209 of the upper end of the distribution ring 208, and the longitudinal hole 206 and the longitudinal hole 306 of the heat exchange absorption block are distributed in the same way. A complete water film is formed in these concentric holes, hydrogen chloride gas and water film are in contact, and are fully absorbed. The heat released is taken away by the horizontal cooling water of the falling film absorber.

[0025] From the technical common sense, the utility model can realize through other's implementation schemes that do not depart from its spirit or essential characteristics. Therefore, the above-mentioned disclosed implementation scheme, in each aspect, is only an example, and is not only. All changes in the range of the utility model or in the range equivalent to the utility model are included in the utility model.

Claims

1. A graphite falling film absorber distributor characterized by: The application relates to a gas distributor, which comprises a distributor graphite outer ring (100), a distributor inner block (200), a distributor tower section (300) and a gas inlet head (301) connected by pressing a cover plate (302) and a pressing rod (303), the cover plate (302) is provided with a gas inlet (307) communicated with the distributor tower section (300), the distributor graphite outer ring (100) and the distributor inner block (200) are connected to form a liquid inlet cavity (304), the distributor graphite outer ring (100) is provided with a liquid inlet (308) communicated with the liquid inlet cavity (304), and the lower end of the distributor inner block (200) is sealingly connected with a heat exchange absorption block (305).

2. A graphite falling film absorber distributor according to claim 1, characterized in that: The distributor graphite outer ring (100) is composed of a liquid inlet pipe (101), a liquid inlet pipe clamp (102) and an outer ring cylinder (103), the upper surface and the lower surface of the outer ring cylinder (103) are respectively provided with uniformly distributed second water lines (105) and first water lines (104), and the inner diameter of the upper ring of the outer ring cylinder (103) is smaller than that of the lower ring.

3. A graphite falling film absorber distributor according to claim 2, characterized in that: The distributor inner block (200) is provided with a transverse liquid inlet groove (203), the bottom end of the transverse liquid inlet groove (203) is flush with the bottom end of the liquid inlet pipe (101), the transverse liquid inlet groove (203) is provided with uniformly distributed liquid inlet outlet holes (204), and the step of the distributor inner block (200) is sealingly pressed with the first water lines (104).

4. A graphite falling film absorber distributor according to claim 3, characterized in that: The heat exchange absorption block (305) is provided with heat exchange absorption block longitudinal holes (306), the distributor inner block (200) is provided with longitudinal holes (206) with the same distribution as the heat exchange absorption block longitudinal holes (306), and the upper end of the longitudinal holes (206) is provided with distribution cups (205).

5. A graphite falling film absorber distributor according to claim 4, characterised in that: The distribution cup (205) is integrally formed by a positioning plate (207) and a distribution ring (208), the upper end of the distribution ring (208) is provided with uniformly distributed overflow ports (209), and the liquid inlet outlet holes (204) and the heat exchange absorption block longitudinal holes (306) are triangularly distributed.

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