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Continuous production method of water processing agent aminotrimethylene phosphonic acid

A technology of aminotrimethylene phosphonic acid and water treatment agent, which is applied in the field of industrial water treatment, can solve the problems of long process flow and unstable product quality, and achieve the effects of advanced technology, stable product quality and high utilization rate of equipment

Inactive Publication Date: 2014-06-11
SHANDONG TAIHE WATER TREATMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, in industrial production, aminotrimethylene phosphonic acid is prepared by a batch-type single-pot production method, which has the disadvantages of long process flow and unstable product quality.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. First, connect the storage tanks of the reaction materials ammonium chloride, formaldehyde, and phosphorous acid to their corresponding buffer dripping tanks, calculate and set the flow meter flow rate according to the designed reactant weight ratio, and pump water into the first reaction kettle. Add 500 parts by weight of finished aminotrimethylene phosphonic acid, and preheat the first reactor to 98°C;

[0030] 2. Begin to feed into the first reactor according to the following flow rate, the ammonium chloride flow rate is 70 parts by weight / hour; the formaldehyde flow rate is 340 parts by weight / hour, and the phosphorous acid flow rate is 525 parts by weight / hour;

[0031] 3. Preheat the second reactor to 105°C;

[0032] 4. When the material in the first reactor is full, open the feed valve of the second reactor, then open the discharge valve of the first reactor, and put the reaction mixed material into the second reactor to keep warm. When step 4 is performed, s...

Embodiment 2

[0047] 1. First, connect the storage tanks of the reaction materials ammonium chloride, formaldehyde, and phosphorous acid to their corresponding buffer dripping tanks, calculate and set the flow meter flow rate according to the designed reactant weight ratio, and pump water into the first reaction kettle. Add 600 parts by weight of finished aminotrimethylene phosphonic acid, and preheat the first reactor to 100°C;

[0048] 2. Start feeding into the first reactor according to the following flow rate, ammonium chloride flow rate is 88 parts by weight / hour; formaldehyde flow rate is 460 parts by weight / hour, and phosphorous acid flow rate is 728 parts by weight / hour;

[0049] 3. Preheat the second reactor to 105°C;

[0050] 4. When the material in the first reactor is full, open the feed valve of the second reactor, then open the discharge valve of the first reactor, and put the reaction mixed material into the second reactor to keep warm. When step 4 is performed, step 2 does no...

Embodiment 3

[0064] Embodiment 3 (best embodiment)

[0065] 1. First, connect the storage tanks of the reaction materials ammonium chloride, formaldehyde, and phosphorous acid to their corresponding buffer dripping tanks, calculate and set the flow meter flow rate according to the designed reactant weight ratio, and pump water into the first reaction kettle. Add 500 parts by weight of finished aminotrimethylene phosphonic acid, preheat the first reactor to 105°C;

[0066] 2. Begin to feed into the first reactor according to the following flow rate, the ammonium chloride flow rate is 145 parts by weight / hour; the formaldehyde flow rate is 786 parts by weight / hour, and the phosphorous acid flow rate is 1240 parts by weight / hour;

[0067] 3. Preheat the second reactor to 110°C;

[0068] 4. When the material in the first reactor is full, open the feed valve of the second reactor, then open the discharge valve of the first reactor, and put the reaction mixed material into the second reactor ...

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Abstract

A continuous production method of a water processing agent aminotrimethylene phosphonic acid comprises the following steps: adopting ammonium chloride, formaldehyde, and phosphorous acid as the raw materials, pumping the raw materials into a buffering and dropwise-adding tank from a storage tank, setting the flows of ammonium chloride, formaldehyde and phosphorous acid according to the weight ratio of raw materials in the reactions, pumping a certain amount of aminotrimethylene phosphonic acid into a first reactor as the reaction substrate, then opening a heating valve to heat the first reactor to a certain temperature so as to reflux the reaction substrate in the first reactor, opening a reaction material dropwise-adding valve at the same time, continuously adding materials under a controlled temperature; opening a material discharging valve of the first reactor so as to discharge the reaction mixed materials to a second reactor or a third reactor, when the fist reactor is full; maintaining the temperature, steaming, discharging the materials, and adding a certain amount of reverse osmosis water so as to obtaining the finished product. The continuous production method has the advantages of large output, little energy consumption, little equipment investment, high equipment utilization rate, short production period, and stable product quality.

Description

[0001] technical field [0002] The invention belongs to the technical field of industrial water treatment, and in particular relates to a production method of an organic phosphine water treatment agent. Background technique [0003] Aminotrimethylenephosphonic acid (ATMP) is an organic phosphonic acid scale and corrosion inhibitor, which can form stable complexes with iron, copper, zinc and other metal ions, and can dissolve oxides on the metal surface. ATMP is generally used as an anti-scaling agent for circulating cooling water, oil field water injection and printing and dyeing water, as a corrosion inhibitor and anti-scaling agent in boiler water equipment. In addition, it can be used in conjunction with various buffers and scale inhibitors. It has a synergistic effect with polycarboxylate, etc., which can increase the effect of corrosion and scale inhibition, and can also be used as a cleaning agent to remove grease on metal surfaces. It can also be used as an additiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/38
Inventor 程终发齐晓婧宋盟盟刘全华万振涛
Owner SHANDONG TAIHE WATER TREATMENT TECH CO LTD
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