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Method for producing sulfamate-series water reducing agent and equipment for producing sulfamate-series water reducing agent

The technology of a sulfamic acid salt and production method is applied in the field of production method and the equipment used therein, which can solve problems such as unsatisfactory product quality stability, low product quality rate, and endangering the health of employees, so as to achieve stability improvement and process improvement. The effect of short cycle and no discharge of three wastes

Inactive Publication Date: 2012-08-15
辽宁岩砂晶建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the production process of sulfamate-based water reducer basically adopts the process of open equipment system, and the formaldehyde is emptied directly to the atmosphere. The problem is : (1) waste of raw material formaldehyde; (2) pollute the environment; (3) endanger the health of employees; (4) low production efficiency; (5) low product quality rate; (6) product quality stability is not ideal

Method used

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  • Method for producing sulfamate-series water reducing agent and equipment for producing sulfamate-series water reducing agent
  • Method for producing sulfamate-series water reducing agent and equipment for producing sulfamate-series water reducing agent
  • Method for producing sulfamate-series water reducing agent and equipment for producing sulfamate-series water reducing agent

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Effect test

Embodiment 2

[0062] Add 1350kg of water into the reactor, 780kg of sodium p-aminobenzene sulfonate into the reactor, one-time continuous input from the manhole, and 240kg of liquid caustic soda (40% NaOH solution) from the high tank into the reactor ( Add through the pipeline, close the valve in time after adding). Start stirring, and use steam to heat the materials in the reactor to 45 degrees through the interlayer. Add 570kg of phenol (one-time addition of flow rate without special requirements), heat to 60°C, add 1000kg of formaldehyde dropwise within 60-70 minutes, keep the temperature at 98-102°C for 40 minutes, add 300kg of water to the kettle, and Pass cooling water to the interlayer, keep it for 2.5 hours at a temperature of 93 degrees, add 300 kg of water to the kettle, cool the interlayer of the kettle, keep it at 60 degrees for 2 hours, add 50 kg of sodium sulfite, and continue the reaction for 30 minutes. Add 750kg of water to the kettle, stir for another 30 minutes, and pump...

Embodiment 3

[0064] Add 1300kg of water to the reactor, 800kg of sodium p-aminobenzene sulfonate into the reactor, one-time continuous input from the manhole, and 240kg of liquid caustic soda (40% NaOH solution) from the high tank into the reactor ( Add through the pipeline, close the valve in time after adding). Start stirring, and use steam to heat the materials in the reactor to 45 degrees through the interlayer. Add 600kg of phenol (one-time adding flow rate without special requirements), heat to 65°C, add 1000kg of formaldehyde dropwise within 60-70 minutes, keep the temperature at 98-102°C for 40 minutes, add 300kg of water to the kettle, and Pass cooling water to the interlayer, keep it for 2.5 hours at a temperature of 93 degrees, add 300 kg of water to the kettle, cool the interlayer of the kettle, keep it at 60 degrees for 2 hours, add 50 kg of sodium sulfite, and continue the reaction for 30 minutes. Add 750kg of water to the kettle, stir for another 30 minutes, and pump the mo...

Embodiment 4

[0066] Add 1350kg of water into the reactor, 820kg of sodium p-aminobenzene sulfonate into the reactor, one-time continuous input from the manhole, and 240kg of liquid caustic soda (40% NaOH solution) from the high tank into the reactor ( Add through the pipeline, close the valve in time after adding). Start stirring, and use steam to heat the materials in the reactor to 45 degrees through the interlayer. Add 5800kg of phenol (one-time addition of flow rate without special requirements), heat to 70°C, add 1000kg of formaldehyde dropwise within 60-70 minutes, keep the temperature at 98-102°C for 40 minutes, add 300kg of water to the kettle, and Pass cooling water to the interlayer, keep it for 3 hours at 92 degrees, add 300 kg of water to the kettle, cool the interlayer, keep it at 60 degrees for 2 hours, add 50 kg of sodium sulfite, and continue the reaction for 30 minutes. Add 750kg of water to the kettle, stir for another 30 minutes, and pump the mother liquor of the sulfam...

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Abstract

The invention belongs to the technical field of production of water reducing agents for cement, and particularly relates to a method for producing a sulfamate-series water reducing agent and equipment for producing the sulfamate-series water reducing agent. The method for producing the sulfamate-series water reducing agent includes (1) adding water, sodium sulfanilate and caustic soda liquid into a reaction kettle; (2) adding phenol, heating, dripping formaldehyde into a system and realizing reaction; (3) adding water, cooling and realizing reaction; and (4) adding water, cooling and realizing reaction. The production equipment comprises the reaction kettle (1), a blending kettle (6), a formaldehyde metering tank (3), a water metering tank (4) and a caustic soda liquid metering tank (5), a material output end of the reaction kettle (1) is communicated with a material input end of the blending kettle (6), and an emptying valve (8) is fixedly disposed on the top of the reaction kettle (1). The production equipment further is provided with a condenser (2), and a port of the condenser (2) is respectively connected with a port of the formaldehyde metering tank (3) and a port of the reaction kettle (1). The method and the production equipment have the advantages of low raw material consumption, high production efficiency, fine quality of target products, high conversion rate and remarkable environmental protection efficacy.

Description

technical field [0001] The invention belongs to the technical field of concrete water reducer production, and in particular relates to a production method of a sulfamate-based water reducer and equipment used therein. Background technique [0002] my country's cement output and consumption rank first in the world, and the annual demand for high-efficiency water reducers is more than 1 million tons. Sulfamate-based water reducer has the advantages of simple production process, good dispersion of cement particles, high water reducing rate, high strength of concrete, good durability, and small loss of slump over time. At present, it is a promising high-efficiency water reducer in China. [0003] At present, the production process of sulfamate-based water reducer basically adopts the process of open equipment system, and the formaldehyde is emptied and directly leads to the atmosphere. The problems are: (1) waste of raw material formaldehyde; (2) pollute the environment; ( 3) ...

Claims

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Application Information

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IPC IPC(8): C04B24/16C04B103/30
Inventor 黄海滨黄海忠黄硕
Owner 辽宁岩砂晶建材有限公司
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