A device and method for preparing aminosulfonic acid

Abstract

The application relates to the technical field, in particular to a sulfamic acid preparation device and a preparation method, which comprise a box body, a cleaning assembly and an in-out material assembly; the cleaning assembly comprises a cleaning shaft, rotating seats, transmission rods, scraping strips and mixing plates; the cleaning shaft is rotationally connected with the box body and penetrates through the box body; two rotating seats are fixedly connected with the cleaning shaft and are respectively arranged in the interior of the box body; a plurality of transmission rods are fixedly connected with the rotating seats and are respectively arranged on the outer sides of the rotating seats; four scraping strips are fixedly connected with the transmission rods and are respectively arranged in the middle of the transmission rods; the number of the mixing plates is four; four mixing plates are fixedly connected with the transmission rods and are respectively arranged in the middle of the transmission rods; and the in-out material assembly is connected with the box body, so that the problems that calcium sulfate and calcium carbonate scale bodies are easily formed in a reaction system, are attached to the inner wall of a reaction kettle and pipelines, heat transfer efficiency is reduced by more than 30%, the cleaning period of the equipment is shortened to 7-10 days, and the maintenance cost is increased are solved.

Description

Technical Field

[0001] This invention relates to the field of technology, and more particularly to an apparatus and method for preparing aminosulfonic acid. Background Technology

[0002] Aminosulfonic acid sulfates are important chemical intermediates and are widely used in electroplating auxiliaries, detergent additives, catalyst preparation and other fields.

[0003] Traditional production processes commonly use tap water or industrial wastewater as reaction medium and washing water. Due to impurities such as calcium, magnesium, and chloride ions in the water, a series of technical problems can be caused: calcium sulfate and calcium carbonate scale are easily formed in the reaction system, which adhere to the inner wall of the reactor and pipes, resulting in a decrease in heat transfer efficiency of more than 30%, a shortening of the equipment cleaning cycle to 7-10 days, and an increase in maintenance costs. Summary of the Invention

[0004] The purpose of this invention is to provide an apparatus and method for preparing aminosulfonic acid, which solves the problem that calcium sulfate and calcium carbonate scale easily form in the reaction system, adhere to the inner wall of the reactor and pipes, resulting in a decrease in heat transfer efficiency of more than 30%, a shortening of the equipment cleaning cycle to 7-10 days, and an increase in maintenance costs.

[0005] To achieve the above objectives, the present invention provides an apparatus and method for preparing aminosulfonic acid, comprising a housing, a cleaning assembly, and a feeding / discharging assembly; the cleaning assembly includes a cleaning shaft, a rotating seat, a transmission rod, scrapers, and mixing plates; the cleaning shaft is rotatably connected to the housing and passes through the housing; there are two rotating seats, each fixedly connected to the cleaning shaft and located inside the housing; there are multiple transmission rods, each fixedly connected to the rotating seat and located outside the rotating seat; there are four scrapers, each fixedly connected to the transmission rod and located in the middle of the transmission rod; there are four mixing plates, each fixedly connected to the transmission rod and located in the middle of the transmission rod; the feeding / discharging assembly is connected to the housing.

[0006] The feeding and discharging assembly includes a feeding hopper and a discharging hopper. The feeding hopper is fixedly connected to the box body and located at the top of the box body, while the discharging hopper is fixedly connected to the box body and located at the bottom of the box body.

[0007] The feeding and discharging assembly further includes a primary sealing plate and a sealing strip. There are two primary sealing plates, which are slidably connected to the discharge hopper and pass through the discharge hopper. There are also two sealing strips, which are fixedly connected to the primary sealing plates and are located in the middle of the primary sealing plates.

[0008] The feeding and discharging assembly further includes a conveying cylinder and a secondary sealing plate. The conveying cylinder is fixedly connected to the discharge hopper and located at the bottom of the discharge hopper. The secondary sealing plate is detachably connected to the conveying cylinder and located at the bottom of the conveying cylinder.

[0009] The feeding and discharging assembly also includes a recycling cylinder, which is fixedly connected to the conveying cylinder and located outside the conveying cylinder.

[0010] The feeding and discharging assembly further includes a conveying shaft and a spiral cylinder. The conveying shaft is rotatably connected to the conveying cylinder and the recovery cylinder and passes through the conveying cylinder and the recovery cylinder. The spiral cylinder is fixedly connected to the conveying shaft and is located inside the conveying cylinder and the recovery cylinder.

[0011] A method for preparing aminosulfonic acid, applied to the aforementioned aminosulfonic acid preparation apparatus.

[0012] The apparatus and method for preparing aminosulfonic acid of the present invention, in use, involves feeding the raw materials into the interior of the chamber through the feed hopper. The raw materials are heated by a heating device on the inner wall of the chamber. Simultaneously, an external power device drives the cleaning shaft to rotate, which in turn drives the rotating seat and the transmission rod to rotate. The rotating scraper and the mixing plate stir and mix the raw materials in the chamber, while simultaneously cleaning the inner wall of the chamber. After cleaning, the primary and secondary sealing plates are opened, and the prepared raw materials are output from the discharge hopper and the conveying cylinder. When cleaning of the chamber is required, the primary sealing plate is opened and the secondary sealing plate is closed. The external power device drives the conveying shaft and the spiral drum to rotate, conveying cleaning water through the spiral drum. The demineralized water is recovered and reused through an external ultrafiltration and reverse osmosis device. This method solves the problem of calcium sulfate and calcium carbonate scale easily forming in the reaction system, adhering to the inner wall of the reactor and pipes, leading to a decrease in heat transfer efficiency of more than 30%, shortening the equipment cleaning cycle to 7-10 days, and increasing maintenance costs. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0014] Figure 1 This is a schematic diagram of the overall structure of the apparatus and method for preparing aminosulfonic acid according to the first embodiment of the present invention.

[0015] Figure 2 This is a structural schematic diagram of the fixing component according to the first embodiment of the present invention.

[0016] Figure 3 This is a structural schematic diagram of the fixing component according to the first embodiment of the present invention.

[0017] In the diagram: 101-box body, 102-cleaning shaft, 103-rotating seat, 104-transmission rod, 105-scraper, 106-mixing plate, 107-feed hopper, 108-discharge hopper, 109-primary sealing plate, 110-sealing strip, 111-conveying cylinder, 112-secondary sealing plate, 113-recovery cylinder, 114-conveying shaft, 115-spiral cylinder. Detailed Implementation

[0018] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0019] The first embodiment of this application is as follows:

[0020] Please see Figures 1 to 3 The present invention provides an apparatus for preparing aminosulfonic acid, comprising a housing 101, a cleaning assembly, and a feeding / discharging assembly. The cleaning assembly includes a cleaning shaft 102, a rotating seat 103, a transmission rod 104, a scraper 105, and a mixing plate 106. The feeding / discharging assembly includes a feed hopper 107, a discharge hopper 108, a primary sealing plate 109, a sealing strip 110, a conveying cylinder 111, a secondary sealing plate 112, a recovery cylinder 113, a conveying shaft 114, and a spiral cylinder 115. The aforementioned solution solves the problem that calcium sulfate and calcium carbonate scale easily form in the reaction system, adhering to the inner wall of the reactor and pipes, resulting in a decrease in heat transfer efficiency of more than 30%, shortening the equipment cleaning cycle to 7-10 days, and increasing maintenance costs.

[0021] In this specific embodiment, the cleaning shaft 102 is rotatably connected to the housing 101 and passes through the housing 101. There are two rotating seats 103, each fixedly connected to the cleaning shaft 102 and located inside the housing 101. There are multiple transmission rods 104, each fixedly connected to the rotating seat 103 and located outside the rotating seat 103. There are four scraper blades 105, each fixedly connected to the transmission rod 104 and located in the middle of the transmission rod 104. The mixing... There are four mixing plates 106, each fixedly connected to a transmission rod 104 and positioned in the middle of the transmission rod 104. The feeding / discharging assembly is connected to the housing 101, which provides support and protection for the device and is used for the preparation of aminosulfonic acid. A heating device is installed in the inner wall of the housing 101 to heat the interior of the housing 101. The cleaning shaft 102 is connected to an external power device to provide power to the cleaning assembly. The rotating seat 103 provides support and transmission for the transmission rod 104, which is used to... The scraper 105 and the mixing plate 106 provide support and transmission. The scraper 105 is used to clean the inner wall of the box 101, and the mixing plate 106 is used to stir and mix the raw materials in the box 101. In use, the raw materials are fed into the box 101 through the feed hopper 107. The heating device in the inner wall of the box 101 heats the raw materials. At the same time, the external power device drives the cleaning shaft 102 to rotate, which in turn drives the rotating seat 103 and the transmission rod 104 to rotate. The rotating scraper 105 and the mixing plate 106 then stir and mix the raw materials. The raw materials inside the housing 101 are stirred and mixed, and the inner wall of the housing 101 is cleaned at the same time. After cleaning, the primary sealing plate 109 and the secondary sealing plate 112 are opened, and the prepared raw materials are output from the discharge hopper 108 and the conveying cylinder 111. When the housing 101 needs to be cleaned, the primary sealing plate 109 is opened and the secondary sealing plate 112 is closed. The conveying shaft 114 and the spiral drum 115 are driven to rotate by an external power device, and the cleaning water is conveyed through the spiral drum 115. The demineralized water is recycled through an external ultrafiltration device and a reverse osmosis device.

[0022] The feed hopper 107 is fixedly connected to the box body 101 and located at the top of the box body 101, and the discharge hopper 108 is fixedly connected to the box body 101 and located at the bottom of the box body 101. The feed hopper 107 is used to feed the box body 101, and the discharge hopper 108 is used to discharge the aminosulfonic acid inside the box body 101.

[0023] The primary sealing plate 109 consists of two plates, which are slidably connected to the discharge hopper 108 and pass through it. The sealing strip 110 consists of two strips, which are fixedly connected to the primary sealing plate 109 and located in the middle of the plate. The primary sealing plate 109 and the sealing strip 110 cooperate to seal the discharge hopper 108, preventing raw materials from flowing out of it.

[0024] The conveying cylinder 111 is fixedly connected to the discharge hopper 108 and located at the bottom of the discharge hopper 108. The secondary sealing plate 112 is detachably connected to the conveying cylinder 111 and located at the bottom of the conveying cylinder 111. The conveying cylinder 111 is used to discharge the material from the discharge hopper 108, and the secondary sealing plate 112 is used to provide a sealing effect on the conveying cylinder 111 to prevent the material from flowing out through the conveying cylinder 111 during cleaning.

[0025] Secondly, the recovery cylinder 113 is fixedly connected to the conveying cylinder 111 and is located outside the conveying cylinder 111. The recovery cylinder 113 is used to connect with external filtration devices and reverse osmosis devices to provide discharge for cleaning water, etc.

[0026] Furthermore, the conveying shaft 114 is rotatably connected to the conveying cylinder 111 and the recycling cylinder 113, and passes through the conveying cylinder 111 and the recycling cylinder 113. The spiral cylinder 115 is fixedly connected to the conveying shaft 114 and is located inside the conveying cylinder 111 and the recycling cylinder 113. The conveying shaft 114 is connected to an external power device to drive the spiral cylinder 115 to rotate. The rotating spiral cylinder 115 is used to discharge materials.

[0027] A method for preparing aminosulfonic acid includes the following steps: 1. Raw material preparation: 50 kg of aminosulfonic acid (purity 99.0%), 32 kg of sulfate (anhydrous sodium sulfate), and 123 kg of deionized water (conductivity 5 μS / cm); 2. Reaction process: Demineralized water is injected into the interior of the tank 101, and the temperature is raised to 70°C by the heating device in the inner wall of the tank 101. Under stirring, aminosulfonic acid and sulfate are added in sequence, and the reaction is kept at the temperature for 2.5 hours. No obvious scale is formed during the process. 3. Post-processing: After the reaction is complete, cool to 25°C, filter to obtain crude product, wash three times countercurrently with deionized water, centrifuge, and dry at 80°C to obtain 78.6 kg of finished product with a purity of 99.7%; 4. Recycling: A total of 85 kg of washing wastewater and equipment rinsing water is treated by ultrafiltration and reverse osmosis, and 65 kg of demineralized water is recovered and used for diluting the next batch of raw materials, with the water quality meeting the standards.

[0028] Using the sulfamic acid preparation apparatus and method of this embodiment, the raw materials are fed into the housing 101 through the feed hopper 107. The raw materials inside the housing 101 are heated by a heating device on the inner wall of the housing 101. Simultaneously, an external power device drives the cleaning shaft 102 to rotate, which in turn drives the rotating seat 103 and the transmission rod 104 to rotate. The rotating scraper 105 and the mixing plate 106 stir and mix the raw materials inside the housing 101, while simultaneously cleaning the inner wall of the housing 101. After cleaning, the primary sealing plate 109 and the secondary sealing plate 112 are opened. The prepared raw materials are output from the discharge hopper 108 and the conveying cylinder 111. When the housing 101 needs to be cleaned, the primary sealing plate 109 is opened and the secondary sealing plate 112 is closed. The conveying shaft 114 and the spiral cylinder 115 are rotated by an external power device, and the cleaning water is conveyed through the spiral cylinder 115. The demineralized water is recycled through an external ultrafiltration device and reverse osmosis device. This solves the problem that calcium sulfate and calcium carbonate scale easily form in the reaction system, which adheres to the inner wall of the reactor and the pipes, resulting in a decrease in heat transfer efficiency of more than 30%, shortening the equipment cleaning cycle to 7-10 days, and increasing maintenance costs.

[0029] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. An apparatus for preparing aminosulfonic acid, comprising a housing, characterized in that, It also includes cleaning components and feeding / discharging components; The cleaning assembly includes a cleaning shaft, a rotating seat, a transmission rod, scrapers, and mixing plates. The cleaning shaft is rotatably connected to the housing and passes through the housing. There are two rotating seats, each fixedly connected to the cleaning shaft and located inside the housing. There are multiple transmission rods, each fixedly connected to the rotating seat and located outside the rotating seat. There are four scrapers, each fixedly connected to the transmission rod and located in the middle of the transmission rod. There are four mixing plates, each fixedly connected to the transmission rod and located in the middle of the transmission rod. The feeding / discharging assembly is connected to the housing.

2. The apparatus for preparing aminosulfonic acid as described in claim 1, characterized in that, The feeding and discharging assembly includes a feeding hopper and a discharging hopper. The feeding hopper is fixedly connected to the box body and located at the top of the box body, while the discharging hopper is fixedly connected to the box body and located at the bottom of the box body.

3. The apparatus for preparing aminosulfonic acid as described in claim 2, characterized in that, The feeding and discharging assembly also includes a primary sealing plate and a sealing strip. There are two primary sealing plates, which are slidably connected to the discharge hopper and pass through the discharge hopper. There are also two sealing strips, which are fixedly connected to the primary sealing plates and are located in the middle of the primary sealing plates.

4. The apparatus for preparing aminosulfonic acid as described in claim 3, characterized in that, The feeding and discharging assembly also includes a conveying cylinder and a secondary sealing plate. The conveying cylinder is fixedly connected to the discharge hopper and located at the bottom of the discharge hopper. The secondary sealing plate is detachably connected to the conveying cylinder and located at the bottom of the conveying cylinder.

5. The apparatus for preparing aminosulfonic acid as described in claim 4, characterized in that, The feeding and discharging assembly also includes a recovery cylinder, which is fixedly connected to the conveying cylinder and located outside the conveying cylinder.

6. The apparatus for preparing aminosulfonic acid as described in claim 5, characterized in that, The feeding and discharging assembly also includes a conveying shaft and a spiral cylinder. The conveying shaft is rotatably connected to the conveying cylinder and the recovery cylinder and passes through the conveying cylinder and the recovery cylinder. The spiral cylinder is fixedly connected to the conveying shaft and is located inside the conveying cylinder and the recovery cylinder.

7. A method for preparing aminosulfonic acid, applied to the aminosulfonic acid preparation apparatus as described in claim 1.

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