CN218774578U

CN218774578U - Novel spraying device for oxidation method oxalic acid production absorption tower

Info

Publication number: CN218774578U
Application number: CN202222966028.3U
Authority: CN
Inventors: 杨龙辉; 林宝国; 杨忠发; 李腾; 林国敏; 杨峰; 黄全荣
Original assignee: Longxiang Industrial Co ltd
Current assignee: Longxiang Industrial Co ltd
Priority date: 2022-11-08
Filing date: 2022-11-08
Publication date: 2023-03-31
Anticipated expiration: 2032-11-08

Abstract

The utility model provides a novel spray set is used to oxidation process oxalic acid production absorption tower, includes PVC inlet pipe, liquid distributor, and the PVC inlet pipe is connected with the collector tube at liquid distributor center, and the collector tube is outwards extended Shen Junyun and distributes and have a plurality of liquid distribution pipes, and the collector tube lower extreme is equipped with a spiral spray head, is equipped with a plurality of spiral spray heads on every liquid distribution pipe, and the spiral spray head is become by the stainless steel of 904L material. The novel spraying device for the oxidation oxalic acid production absorption tower has good mixed acid resistance effect and balanced liquid distribution.

Description

Novel spraying device for oxidation method oxalic acid production absorption tower

Technical Field

The utility model relates to a relevant technical field of oxalic acid absorption tower, in particular to novel spray set is used to oxidation process oxalic acid production absorption tower.

Background

More and more enterprises in the production of oxalic acid by an oxidation method adopt an absorption tower to absorb NOx gas generated by oxidation, an absorption system adopts mother liquor for absorption, the mother liquor is sulfuric acid, oxalic acid and nitric acid mixed acid liquor, the corrosivity is very strong, and the requirement on materials is very high. The traditional liquid distribution for the absorption tower comprises an overflow trough, an overflow weir, a perforated pipe, a sprayer and other distributors, and the liquid distribution has more or less bias flow, so that the absorption effect is influenced due to unbalanced liquid distribution and bias flow.

SUMMERY OF THE UTILITY MODEL

【1】 Technical problem to be solved

Aiming at the technical problems, the novel spraying device for the absorption tower for producing oxalic acid by the oxidation method has good mixed acid resistant effect and balanced liquid distribution.

【2】 Technical scheme for solving problems

The utility model provides an oxidation process oxalic acid production absorbing tower uses novel spray set, includes PVC inlet pipe, liquid distributor, the collecting tube at PVC inlet pipe and liquid distributor center is connected, and the collecting tube is extended outwards Shen Junyun and is distributed and have a plurality of liquid distribution pipes, and the oxalic acid mother liquor flows to in the collecting tube from PVC inlet pipe, then the collecting tube is in distributing the oxalic acid mother liquor to liquid distribution pipe, the collecting tube lower extreme is equipped with a spiral spray head, be equipped with a plurality of spiral spray heads on every liquid distribution pipe, make spiral spray head use the collecting tube to be circumference evenly distributed as the center, can make oxalic acid mother liquor distribute evenly, because oxalic acid mother liquor is sulphuric acid, oxalic acid, nitric acid mixed acidizing fluid, corrosivity is very strong, spiral spray head is made by the stainless steel of L material, 904 can improve spiral spray head's life.

Preferably, the number of the liquid distribution pipes is thirteen, and each liquid distribution pipe is provided with three spiral spray heads.

Preferably, the liquid distributor periphery is equipped with the PVC fixed plate, the PVC fixed plate is located the center between two liquid distribution pipes. The PVC fixing plate is used for fixing the structural stability of the liquid distributor.

Preferably, in order to facilitate the connection of the spiral spray head, the liquid distribution pipe is provided with a connecting pipe for connecting the spiral spray head, the spiral spray head can be provided with an external thread, and the connecting pipe can be internally provided with an external thread matched with the internal thread, so that the spiral spray head is in threaded connection with the connecting pipe; the spiral nozzle and the connecting pipe can also be connected in a welding mode.

Preferably, the spiral nozzle comprises a first shaft section, a second shaft section and a third shaft section, the first shaft section is a connecting end, and the third shaft section is a spiral nozzle. The first shaft section and the second shaft section are internally provided with drift diameters for the oxalic acid mother liquor to flow, the drift diameters are 3/4 inch, and the oxalic acid mother liquor is sprayed out by a spiral nozzle.

Preferably, the angle α of the spray outlet in the spiral nozzle of the third shaft section is 120 °.

When the drift diameter is 3/4 inch, the spraying liquid outlet included angle alpha is 120 degrees and the pressure is 0.5kg/cm, when the spraying height H600mm is measured, the spraying coverage area is required to be more than or equal to ¢ mm, the diameter of water drops is less than or equal to ¢ mm, and the water drops are uniformly and densely distributed in the coverage area.

【3】 Advantageous effects

The spiral nozzle is made of 904L stainless steel, and is continuously flushed by mixed acid without being corroded and abraded, so that the service life of equipment is prolonged.

Spiral spray nozzle on the liquid distributor distributes evenly, makes the oxalic acid mother liquor that erupts distribute evenly, and it is even to spray in the scope, does not have the bias flow, improves the absorption efficiency.

Drawings

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

fig. 2 is a schematic bottom view of the present invention;

fig. 3 is a schematic view of the connection structure of the middle spiral sprinkler head of the present invention.

In the figure: the device comprises a PVC feeding pipe 1, a liquid distributor 2, a liquid collecting pipe 3, a liquid distributing pipe 4, a connecting pipe 41, a spiral spray head 5, a first shaft section 51, a second shaft section 52, a third shaft section 53 and a PVC fixing plate 6.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1 to 3, a novel spraying device for an absorption tower for oxalic acid production by an oxidation method comprises a PVC feeding pipe 1 and a liquid distributor 2, wherein the PVC feeding pipe 1 is connected with a liquid collecting pipe 3 at the center of the liquid distributor 2, a plurality of liquid distributing pipes 4 are distributed on the liquid collecting pipe 3 in an extending manner Shen Junyun, oxalic acid mother liquor flows into the liquid collecting pipe 3 from the PVC feeding pipe 1, then the liquid collecting pipe 3 distributes the oxalic acid mother liquor into the liquid distributing pipes 4, a spiral nozzle 5 is arranged at the lower end of the liquid collecting pipe 3, and a plurality of spiral nozzles 5 are arranged on each liquid distributing pipe 4, so that the spiral nozzles 5 are circumferentially and uniformly distributed by taking the liquid collecting pipe 3 as the center, the distribution of the oxalic acid mother liquor is uniform, and the spiral nozzles 5 are made of stainless steel made of L904 material, and the service life of the spiral nozzles 5 can be prolonged.

Preferably, the number of the liquid distribution pipes 4 is thirteen, and each liquid distribution pipe 4 is provided with three spiral spray heads 5.

Preferably, a PVC fixing plate 6 is disposed on the periphery of the liquid distributor 2, and the PVC fixing plate 6 is located at the center between the two liquid distribution pipes 4. The PVC fixing plate 6 serves to fix the structural stability of the liquid distributor 2.

Preferably, in order to facilitate the connection of the spiral nozzle 5, the liquid distribution pipe 4 is provided with a connection pipe 41 for connecting the spiral nozzle 5, the spiral nozzle 5 may be provided with an external thread, and the connection pipe 41 may be internally provided with an external thread matched with the internal thread, so that the spiral nozzle 5 is in threaded connection with the connection pipe 41; the spiral nozzle 5 and the connecting pipe 41 can also be connected by welding.

Preferably, the spiral nozzle 5 includes a first shaft segment 51, a second shaft segment 52 and a third shaft segment 53, wherein the first shaft segment 51 is a connection end, and the third shaft segment 53 is a spiral nozzle. The first shaft section 51 and the second shaft section 52 are internally provided with a drift diameter for the oxalic acid mother liquor to flow, the drift diameter is 3/4 inch, and the oxalic acid mother liquor is sprayed outwards by a spiral nozzle.

Preferably, the angle α of the spray in the helical nozzle of the third shaft section 53 is 120 °.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a novel spray set is used to oxidation process oxalic acid production absorption tower which characterized in that, includes PVC inlet pipe, liquid distributor, the PVC inlet pipe is connected with the collector tube at liquid distributor center, and the collector tube is to the extension Shen Junyun distribution have a plurality of liquid distribution pipes, the collector tube lower extreme is equipped with a spiral nozzle, be equipped with a plurality of spiral nozzle on every liquid distribution pipe, spiral nozzle is become by the stainless steel of 904L material.

2. The novel spraying device for the absorption tower for the production of oxalic acid by the oxidation method as claimed in claim 1, wherein the number of the liquid distribution pipes is thirteen, and each liquid distribution pipe is provided with three spiral spray heads.

3. The new sprinkler for an absorption tower in production of oxalic acid by oxidation process as claimed in claim 1, wherein a PVC fixing plate is provided at the periphery of said liquid distributor, said PVC fixing plate being located at the center between two liquid distribution pipes.

4. The new sprinkler for an absorption tower in production of oxalic acid by oxidation process as claimed in claim 1, wherein the liquid distribution pipe is provided with a connection pipe for connection of a spiral spray head.

5. The novel spraying device for the absorption tower for the production of oxalic acid by the oxidation method as claimed in claim 1, wherein the spiral nozzle comprises a first shaft section, a second shaft section and a third shaft section, the first shaft section is a connecting end, and the third shaft section is a spiral nozzle.

6. The new spraying device for the absorption tower for the production of oxalic acid by the oxidation process as claimed in claim 5, wherein the spraying liquid outlet angle α in the spiral nozzle of the third shaft section is 120 °.