Method for recycling tartaric acid in tilmicosin production wastewater

A technology for producing wastewater and tilmicosin, which is applied in chemical instruments and methods, separation/purification of carboxylic acid compounds, water pollutants, etc., can solve problems such as environmental pollution, and achieve the goal of reducing production costs and reducing wastewater treatment volume. Effect

Inactive Publication Date: 2018-10-02
SHANDONG DONGYAO PHARMACEUTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] A large amount of waste water containing sodium tartrate will be produced in the pr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Send 1.5t of tilmicosin production waste water containing 2~3% sodium tartrate to the treatment kettle, slowly add calcium chloride with a molar ratio of 1:1 into the treatment kettle, stir for 30 minutes, and filter with a plate frame to obtain calcium tartrate precipitation Prepare 3% sulfuric acid solution and send it to a 3.0t reactor, start the reactor to stir, slowly put the calcium tartrate obtained by filtration into the reactor, react for 30min when the stirring is turned on, take a sample, detect, and adjust the amount of calcium tartrate Control the pH of the reaction solution at 1.5; filter the obtained reaction solution with plate and frame, and use the filtrate (containing 4-6% tartaric acid solution) for the production of Tylenol tartrate. The obtained Tylenol tartrate product meets the national pharmacopoeia standard, with a biological potency of 905U / mg, total components 97.5%, A component 90.5%.

Embodiment 2

[0017] Send 1.5t of tilmicosin production waste water containing 2~3% sodium tartrate to the treatment kettle, slowly add calcium chloride with a molar ratio of 1:0.9 into the treatment kettle, stir for 20 minutes, and filter with a plate frame to obtain calcium tartrate precipitation Prepare 2% sulfuric acid solution and send it to a 3.0t reactor, start the reactor to stir, slowly put the calcium tartrate obtained by filtration into the reactor, react for 40min when the stirring is turned on, take a sample, detect, adjust the amount of calcium tartrate Control the pH of the reaction solution at 1.2; filter the obtained reaction solution with plate and frame, and use the filtrate (containing 4-6% tartaric acid solution) for the production of Tylenol tartrate. The obtained Tylenol tartrate product meets the national pharmacopoeia standard, with a biological potency of 912U / mg, total components 98.5%, A component 91.0%.

Embodiment 3

[0019] Send 1.5t of tilmicosin production wastewater containing 2~3% sodium tartrate to the treatment kettle, slowly add calcium chloride with a molar ratio of 1:1.1 into the treatment kettle, stir for 40 minutes, and filter with plate and frame to obtain calcium tartrate precipitation Prepare 4% sulfuric acid solution and send it to a 3.0t reactor, start the reactor to stir, slowly put the calcium tartrate obtained by filtration into the reactor, react for 50min when the stirring is turned on, take a sample, detect, and adjust the amount of calcium tartrate Control the pH of the reaction solution at 1.6; filter the obtained reaction solution with plate and frame, and use the filtrate (containing 4-6% tartaric acid solution) for the production of Tylenol tartrate. / mg, total components 98.0%, A component 90.5%.

[0020] The concentrations of the substances herein are all mass percent concentrations.

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Abstract

The invention relates to a method for recycling tartaric acid in tilmicosin production wastewater. The method comprises the following steps: (1) delivering the tilmicosin production wastewater containing sodium tartarate into a treatment kettle, slowly adding calcium chloride of which the molar ratio is 1 to (0.9 to 1.1) into the treatment kettle, stirring for 20 to 40 minutes, and carrying out plate frame filtering, thus obtaining calcium tartarate precipitate; (2) preparing and delivering a sulfuric acid solution of which the concentration is 2 to 4 percent to a reaction kettle, starting thereaction kettle for stirring, slowly putting calcium tartarate filtered and obtained in step (1) in the reaction kettle, reacting for 30 to 50 minutes under the situation that stirring is started, sampling, and controlling pH (Potential of Hydrogen) of a reaction solution to be 1.2 to 1.6 by regulating the adding amount of calcium tartarate; (3) carrying out the plate frame filtering on the reaction solution obtained in step (2), wherein filtrate (a tartaric acid solution) is used for production of tylosin tartarate. According to method disclosed by the invention, not only can the problem ofwastewater treatment during tilmicosin production be solved, but also the recycled tartaric acid can be used for preparing tylosin tartarate; the problem of environment protection is solved, meanwhile, the production cost of tylosin tartarate is also reduced, and the purposes of cyclic economy, comprehensive treatment as well as energy conservation and emission reduction are achieved.

Description

technical field [0001] The invention relates to a method for comprehensive treatment of waste water in the field of chemical production and an energy-saving and emission-reduction method, in particular to a method for recycling tartaric acid in tilmicosin production waste water. Background technique [0002] A large amount of waste water containing sodium tartrate will be produced in the production process of rice, which will pollute the environment if it is not treated properly. Tartaric acid solution is needed in the production of Tylenol tartrate. If tartaric acid can be recovered from the waste water produced by rice production for reuse, on the one hand, it can reduce the amount of tartaric acid used in the production of Tylenol tartrate, thereby reducing production costs; on the other hand, it can Reducing the content of tartrate in rice production wastewater and reducing the amount of wastewater treated by the sewage treatment system is beneficial to environmental pro...

Claims

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Application Information

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IPC IPC(8): C02F9/04C07C51/42C07C51/487C07C59/255C02F101/34
CPCC02F9/00C02F1/001C02F1/5236C02F1/5272C02F2101/34C07C51/42C07C51/487C07C59/255
Inventor 张丽丽赵昂史清生倪士泉张同勋
Owner SHANDONG DONGYAO PHARMACEUTICAL CO LTD
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