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CN-118031534-B - Flash dryer for thiodipropionic acid

CN118031534BCN 118031534 BCN118031534 BCN 118031534BCN-118031534-B

Abstract

The invention discloses a flash evaporation dryer for thiodipropionic acid, which relates to the technical field of antioxidant preparation, and comprises a stirring crushing mechanism and a pretreatment mechanism, wherein the pretreatment mechanism comprises a pretreatment cylinder and a discharge pipeline, the discharge pipeline is arranged at the bottom of the pretreatment cylinder and is used for conveying a pretreated material of the pretreatment cylinder to an inner cavity of the stirring crushing mechanism connected with the pretreatment cylinder for crushing and drying, the stirring crushing mechanism comprises a drying chamber, a first feed inlet is arranged on the circumferential outer side wall of the drying chamber, and a bellows is arranged on the circumferential outer side wall of the drying chamber and is arranged at the lower end of the first feed inlet.

Inventors

  • WANG AIFA
  • ZHANG XUEPING
  • HAN JING
  • WANG JIN

Assignees

  • 天津力生化工有限公司

Dates

Publication Date
20260508
Application Date
20240328

Claims (9)

  1. 1. A flash dryer for thiodipropionic acid is characterized by comprising: A stirring and crushing mechanism (100); The pretreatment mechanism (600), the pretreatment mechanism (600) comprises a pretreatment cylinder (610) and a discharge pipeline (630), and the discharge pipeline (630) is arranged at the bottom of the pretreatment cylinder (610) and is used for conveying the pretreated materials of the pretreatment cylinder (610) to the inner cavity of the stirring and crushing mechanism (100) connected with the pretreatment cylinder for crushing and drying treatment; The dust removal device further comprises a gas-liquid separation mechanism (400), wherein the gas-liquid separation mechanism (400) is connected with the dust removal mechanism (300), and the gas-liquid separation mechanism (400) comprises: The separating cylinder (410), the separating cylinder (410) is arranged on the outer side of the bag-type dust collector (310) of the dust removing mechanism (300), a second feeding port (410 a) and a first air outlet (410 c) are respectively arranged on the circumferential outer side wall of the separating cylinder (410), the first air outlet (410 c) is arranged at the upper end of the second feeding port (410 a), a liquid outlet (410 b) is arranged at the end part of the separating cylinder (410), and the first air outlet (410 c) is connected with the heat exchange tube (150 b) through a pipeline; a gas-liquid conduit (420), wherein one end of the gas-liquid conduit (420) is connected with the second feeding port (410 a), and the other end of the gas-liquid conduit is connected with the discharging interface (330); and a first top cover (430), wherein the first top cover (430) is arranged at the other end part of the separation barrel (410), and a second exhaust port (430 a) is arranged at the top edge of the first top cover (430).
  2. 2. A flash dryer for thiodipropionic acid according to claim 1, wherein the stirring and crushing mechanism (100) comprises: a drying chamber (110), wherein a first feed port (110 a) is arranged on the circumferential outer side wall of the drying chamber (110); A bellows (120), the bellows (120) being disposed on a circumferential outer side wall of the drying chamber (110), the bellows (120) being disposed at a lower end of the first feed port (110 a); a heating mechanism (130), the heating mechanism (130) being disposed at an end of the bellows (120); the stirring mechanism (140), the stirring mechanism (140) is arranged at the bottom of the drying chamber (110), and the stirring mechanism (140) comprises a conical driving wheel (140 a), a first connecting shaft (140 b), a power wheel (140 c), a second connecting shaft (140 d) and a first stirring blade (140 e); The conical driving wheel (140 a) is arranged in the inner cavity of the drying chamber (110) through a sealed bearing; the first connecting shaft (140 b) is arranged at the bottom of the conical driving wheel (140 a) and is arranged at the outer side of the drying chamber (110); the power wheel (140 c) is arranged on the circumferential outer side wall of the first connecting shaft (140 b); a second connecting shaft (140 d) is arranged at the end part of the conical driving wheel (140 a) and is arranged in the inner cavity of the drying chamber (110); The first stirring blade (140 e) is arranged on the circumferential outer side wall of the second connecting shaft (140 d); the guide cylinder (150), the guide cylinder (150) is arranged at the end part of the drying chamber (110) and communicated with the inner cavity of the drying chamber (110), an inner sleeve (150 a) is arranged at the top of the inner cavity of the guide cylinder (150), and a heat exchange tube (150 b) is arranged between the inner sleeve (150 a) and the guide cylinder (150); the end cover (160), end cover (160) set up the tip of guide cylinder (150), the inner chamber of end cover (160) is provided with screen cloth (160 a), be provided with first bin outlet (160 b) on the circumference lateral wall of end cover (160).
  3. 3. A flash dryer for thiodipropionic acid according to claim 2, further comprising a gas-solid separation mechanism (200), wherein the gas-solid separation mechanism (200) is connected with the stirring and crushing mechanism (100), and the gas-solid separation mechanism (200) comprises: A cyclone (210), the cyclone (210) being disposed outside the guide cylinder (150); A feed pipe (220), the feed pipe (220) being provided on a circumferential outer sidewall of the cyclone separator (210) and being connected to the first discharge port (160 b); and a second discharge port (230), wherein the second discharge port (230) is arranged on the circumferential outer side wall of the cyclone separator (210) and is arranged at the upper end of the feeding pipeline (220).
  4. 4. A flash dryer for thiodipropionic acid according to claim 3, further comprising a dust removing mechanism (300), wherein said dust removing mechanism (300) is connected to said gas-solid separating mechanism (200), and said dust removing mechanism (300) comprises: a bag-type dust collector (310), wherein the bag-type dust collector (310) is arranged outside the cyclone separator (210); A feeding interface (320), wherein the feeding interface (320) is arranged on the circumferential outer side wall of the bag-type dust collector (310) and is connected with the second discharge hole (230); the discharging interface (330) is arranged on the circumferential outer side wall of the bag-type dust collector (310) and is arranged at the upper end of the feeding interface (320).
  5. 5. A flash dryer for thiodipropionic acid according to claim 4, further comprising a gas-liquid separation power mechanism (500), wherein said gas-liquid separation power mechanism (500) is connected to said gas-liquid separation mechanism (400), and said gas-liquid separation power mechanism (500) comprises: a first speed reducer (510), the first speed reducer (510) being disposed on top of the first top cover (430); A first motor (520), the first motor (520) being disposed at an end of the first speed reducer (510); the driving rod (530), driving rod (530) set up on the output shaft of first speed reducer (510) and set up separating tube (410) inner chamber, be provided with separation blade (530 a) on the circumference lateral wall of driving rod (530), separation blade (530 a) set up separating tube (410) inner chamber.
  6. 6. A flash dryer for thiodipropionic acid according to claim 5, wherein a heat exchange coil (610 a) is arranged in an inner cavity of the pretreatment cylinder (610), the heat exchange coil (610 a) is connected with the heat exchange tube (150 b), a third discharge port (610 b) is arranged at the end part of the pretreatment cylinder (610), and the third discharge port (610 b) is connected with the discharge pipeline (630).
  7. 7. A flash dryer for thiodipropionic acid according to claim 6, wherein said pretreatment mechanism (600) further comprises: And a second top cover (620), wherein the second top cover (620) is arranged at the other end part of the pretreatment cylinder (610) and performs sealing treatment with the pretreatment cylinder (610).
  8. 8. A flash dryer for thiodipropionic acid according to claim 7, further comprising a pretreatment power mechanism (700), said pretreatment power mechanism (700) being connected to said pretreatment mechanism (600), said pretreatment power mechanism (700) comprising: A second speed reducer (710), the second speed reducer (710) being disposed on top of the second top cover (620); A second motor (720), the second motor (720) being disposed at an end of the second speed reducer (710); Stirring rod (730), stirring rod (730) set up on the output shaft of second speed reducer (710) and set up the inner chamber of pretreatment canister (610), stirring rod (730) are provided with second stirring vane (730 a), second stirring vane (730 a) set up the inner chamber of pretreatment canister (610).
  9. 9. The flash dryer for thiodipropionic acid according to claim 8, further comprising a material conveying power mechanism (800), wherein the material conveying power mechanism (800) is connected with the pretreatment mechanism (600), and the material conveying power mechanism (800) comprises: A third speed reducer (810), the third speed reducer (810) being disposed at an end of the discharge pipe (630); a third motor (820), the third motor (820) being disposed at an end of the third speed reducer (810); The conveying shaft (830), the conveying shaft (830) is arranged on the output shaft of the third speed reducer (810) and is arranged in the inner cavity of the discharging pipeline (630), conveying blades (830 a) are arranged on the circumferential outer side wall of the conveying shaft (830), and the conveying blades (830 a) are arranged in the inner cavity of the discharging pipeline (630) and are tangential to the inner cavity side wall of the discharging pipeline (630).

Description

Flash dryer for thiodipropionic acid Technical Field The invention relates to the technical field of antioxidant preparation, in particular to a flash dryer for thiodipropionic acid. Background The thiodipropionic acid is prepared by condensing, acidifying, standing for decoloring, filtering, crystallizing, leaching and drying acrylic acid and sodium sulfide in the presence of sulfuric acid. The existing drying mode is to put the pasty material into a dryer for stirring and drying, and because the pasty material has higher humidity and higher viscosity in advance, the stirring and drying in the dryer directly needs very long time and has lower efficiency, so how to improve the drying efficiency in the production and preparation process of the thiodipropionic acid is a problem to be solved by the technicians in the technical field. Disclosure of Invention The invention aims to provide a flash dryer for thiodipropionic acid, which solves the problems that in the prior art, pasty materials are placed in a dryer for stirring and drying, and the pasty materials are relatively high in early humidity and viscosity, and are directly placed in the dryer for stirring and drying, so that the stirring and drying time is extremely long and the efficiency is relatively low. In order to achieve the purpose, the invention provides the following technical scheme that the flash dryer for the thiodipropionic acid comprises: A stirring and crushing mechanism; the pretreatment mechanism comprises a pretreatment cylinder and a discharge pipeline, wherein the discharge pipeline is arranged at the bottom of the pretreatment cylinder and used for conveying the pretreated material of the pretreatment cylinder to the inner cavity of the stirring and crushing mechanism connected with the pretreatment cylinder for crushing and drying treatment. Preferably, the stirring and crushing mechanism comprises: The drying chamber is provided with a first feeding hole on the circumferential outer side wall; The air box is arranged on the circumferential outer side wall of the drying chamber, and the air box is arranged at the lower end of the first feed inlet; The heating mechanism is arranged at the end part of the bellows; the stirring mechanism is arranged at the bottom of the drying chamber and comprises a conical driving wheel, a first connecting shaft, a power wheel, a second connecting shaft and a first stirring blade; The conical driving wheel is arranged in the inner cavity of the drying chamber through a sealing bearing; the first connecting shaft is arranged at the bottom of the conical driving wheel and is arranged outside the drying chamber; the power wheel is arranged on the circumferential outer side wall of the first connecting shaft; the second connecting shaft is arranged at the end part of the conical driving wheel and is arranged in the inner cavity of the drying chamber; the first stirring blade is arranged on the circumferential outer side wall of the second connecting shaft; The guide cylinder is arranged at the end part of the drying chamber and communicated with the inner cavity of the drying chamber, an inner sleeve is arranged at the top of the inner cavity of the guide cylinder, and a heat exchange tube is arranged between the inner sleeve and the guide cylinder; The end cover is arranged at the end part of the guide cylinder, a screen is arranged in the inner cavity of the end cover, and a first discharge hole is formed in the circumferential outer side wall of the end cover. Preferably, the stirring crushing device further comprises a gas-solid separation mechanism, wherein the gas-solid separation mechanism is connected with the stirring crushing mechanism, and the gas-solid separation mechanism comprises: The cyclone separator is arranged on the outer side of the guide cylinder; the feeding pipeline is arranged on the circumferential outer side wall of the cyclone separator and connected with the first discharge port; the second discharge opening is arranged on the circumferential outer side wall of the cyclone separator and is arranged at the upper end of the feeding pipeline. Preferably, the device further comprises a dust removing mechanism, wherein the dust removing mechanism is connected with the gas-solid separation mechanism, and the dust removing mechanism comprises: the cloth bag dust collector is arranged on the outer side of the cyclone separator; the feeding interface is arranged on the circumferential outer side wall of the bag-type dust collector and is connected with the second discharge port; The discharging interface is arranged on the circumferential outer side wall of the bag-type dust collector and is arranged at the upper end of the feeding interface. Preferably, the device further comprises a gas-liquid separation mechanism, wherein the gas-liquid separation mechanism is connected with the dust removal mechanism, and the gas-liquid separation mechanism comprises: The separating cylinder is ar