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CN-224214940-U - Phosphoric acid conveying pipeline with steam tracing pipe

CN224214940UCN 224214940 UCN224214940 UCN 224214940UCN-224214940-U

Abstract

A phosphoric acid conveying pipeline with a steam tracing pipe comprises an acid conveying pipeline and a steam tracing pipe arranged outside the acid conveying pipeline, wherein the steam tracing pipe is sleeved outside the acid conveying pipeline, sealing covers connected with the outer wall of the acid conveying pipeline are arranged at two ends of the steam tracing pipe, a circulation space for high-temperature steam to pass through is formed between the steam tracing pipe and the acid conveying pipeline, the steam tracing pipe comprises an upper cylinder part, a lower conical cylinder part and a connecting pipe part for connecting the upper cylinder part and the lower conical cylinder part, a steam inlet is formed in the top of the upper cylinder part, a steam outlet is formed in the bottom of the lower conical cylinder part, and heat conducting spiral fins are arranged on the outer wall of the acid conveying pipeline from top to bottom. The utility model has the advantages of high efficiency, energy saving, safety, reliability and the like, prolongs the driving time and reduces the frequency of parking and maintenance.

Inventors

  • CAI SHENGRONG

Assignees

  • 宜昌新洋丰肥业有限公司

Dates

Publication Date
20260508
Application Date
20250613

Claims (7)

  1. 1. A phosphoric acid conveying pipeline with a steam tracing pipe, which comprises an acid conveying pipeline (1) and a steam tracing pipe (2) arranged outside the acid conveying pipeline, and is characterized in that, The steam tracing pipe (2) is sleeved outside the acid conveying pipeline (1), sealing covers (3) connected with the outer wall of the acid conveying pipeline (1) are arranged at two ends of the steam tracing pipe (2), and a circulation space through which high-temperature steam passes is formed between the steam tracing pipe (2) and the acid conveying pipeline (1); The steam tracing pipe (2) comprises an upper cylindrical part (11), a lower conical cylindrical part (12) and a connecting pipe part (13) for connecting the upper cylindrical part and the lower conical cylindrical part, wherein the top of the upper cylindrical part (11) is provided with a steam inlet (4), and the bottom of the lower conical cylindrical part (12) is provided with a steam outlet (5); the outer wall of the acid conveying pipeline (1) is provided with heat conducting spiral fins (15) from top to bottom.
  2. 2. A phosphoric acid delivery conduit with a steam tracing pipe according to claim 1, wherein said lower conical barrel portion (12) decreases in diameter from top to bottom.
  3. 3. A phosphoric acid delivery conduit with a steam tracing pipe according to claim 1, wherein said upper cylindrical portion (11), lower conical cylindrical portion (12) and connecting pipe portion (13) are of an integrally formed structure.
  4. 4. The phosphoric acid conveying pipeline with the steam tracing pipe according to claim 1, wherein the outer wall of the steam tracing pipe (2) is provided with an insulating layer (20) which comprises an aluminum silicate fiber layer (21) and a polyurethane foam layer (22) which are sequentially arranged from inside to outside.
  5. 5. A phosphoric acid delivery pipe with a steam tracing pipe according to claim 4, wherein the total thickness of said aluminum silicate fiber layer (21) and polyurethane foam layer (22) is not less than 70mm.
  6. 6. The phosphoric acid conveying pipeline with the steam tracing pipe according to claim 1, wherein the steam air inlet (4) is connected with an air inlet pipeline (6), and the air inlet pipeline (6) is sequentially provided with a steam filter (7) and a steam-water separator (8).
  7. 7. The phosphoric acid delivery pipeline with the steam tracing pipe according to claim 6, wherein the air inlet pipeline (6) is further provided with a steam pressure gauge (9).

Description

Phosphoric acid conveying pipeline with steam tracing pipe Technical Field The utility model relates to the technical field of phosphoric acid technology, in particular to a phosphoric acid conveying pipeline with a steam tracing pipe. Background In phosphoric acid production, an acid conveying pipeline is an important tie for connecting production links. However, in a low-temperature environment, the acid solution is easy to solidify or flow slowly, so that a pipeline is blocked, the production efficiency is seriously affected, and even safety accidents are caused. The traditional heating mode has the problems of high energy consumption, uneven heating, unobvious effect and the like. Before technical improvement, the acid conveying pipeline has serious scale formation, the continuous driving period is short, and the frequent maintenance brings about safety risks. The workshop is for improving production cycle, reduces workman's security risk, reduces the maintenance frequency after installing the heat tracing pipe additional, reduces worker's work and emphasizes, reduces security risk. Disclosure of utility model The utility model aims to overcome the defects and provide a phosphoric acid conveying pipeline with a steam tracing pipe. The utility model comprises an acid conveying pipeline and a steam tracing pipe arranged outside the acid conveying pipeline, wherein the steam tracing pipe is sleeved outside the acid conveying pipeline, sealing covers connected with the outer wall of the acid conveying pipeline are arranged at two ends of the steam tracing pipe, and a circulation space through which high-temperature steam passes is formed between the steam tracing pipe and the acid conveying pipeline; The steam tracing pipe comprises an upper cylindrical part, a lower conical cylindrical part and a connecting pipe part for connecting the upper cylindrical part and the lower conical cylindrical part, wherein the top of the upper cylindrical part is provided with a steam inlet, and the bottom of the lower conical cylindrical part is provided with a steam outlet; The outer wall of the acid conveying pipeline is provided with heat conducting spiral fins from top to bottom. Preferably, the lower tapered barrel portion decreases in diameter from top to bottom. Preferably, the upper cylindrical portion, the lower tapered cylindrical portion and the connecting pipe portion are integrally formed. Preferably, the outer wall of the steam tracing pipe is provided with an insulation layer, and the insulation layer comprises an aluminum silicate fiber layer and a polyurethane foam layer which are sequentially arranged from inside to outside. Preferably, the total thickness of the aluminum silicate fiber layer and the polyurethane foam layer is not less than 70mm. Preferably, the steam inlet is connected with an air inlet pipeline, and the air inlet pipeline is sequentially provided with a steam filter and a steam-water separator. Preferably, the air inlet pipeline is also provided with a steam pressure gauge. The utility model has the advantages of high efficiency, energy saving, safety, reliability and the like, prolongs the driving time and reduces the frequency of parking and maintenance. Drawings Fig. 1 is a schematic structural view of the present utility model. Fig. 2 is a schematic structural diagram of the heat insulation layer. Detailed Description For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. In the description of the embodiments of the present utility model, it should be noted that, if the terms "upper," "lower," "inner," "outer," and the like indicate an azimuth or a positional