Discussion on the production technology of the feed antioxidant ethoxyquin

This post was last edited by sexman on 2016-12-14 00:21. I have finally found a forum of this kind; I am just starting out in the production of ethoxyquin, and I hope to learn from you.*，￥……

Hello. We can learn from each other* and improve together.

Do you have QQ? I want to learn from you*

I. Product Description
1. Product Name: Ethoxyquin; Ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline
Structural formula:
Molecular formula: C14H19NO
Molecular weight: 217.30
2. Physicochemical Properties: Light brown viscous liquid. Boiling point 169°C (1.47 kPa), 123–125°C (0.267 kPa). Relative density 1.029–1.031 (25/25°C). Refractive index 1.569–1.672 (25°C). Soluble in benzene, gasoline, ether, alcohol, carbon tetrachloride, propane, and dichloroethane; insoluble in water. It has relatively stable properties. 3. Technical requirements: Parameter name, Parameter value – Crude oil: 30%; Powder form: 60%. Appearance: Light brown viscous liquid; Color: Brownish-red or yellow-brown to brown. Purity (%): ≥96.0 for crude oil, 30.0 for the powder form, 60.0 for the same. p-Aminophenyl ether (%): ≤1.0 for crude oil, 0.6 for the powder form, 0.6 for the same. Arsenic (%): ≤0.0003 –; Heavy metals (as Pb): ≤0.001 –. 4. Applications of the product: Used as an antioxidant in feed and food, as a preservative, and as an anti-aging agent for rubber. II. Raw Material Specifications
Serial Number | Name of Raw Material | Control Parameters | Control Limits | Remarks
1 | p-Aminophenyl ether | Appearance | Dark red oily liquid | Specific gravity: 1.0652 (16/4°C) | Main content ≥99%
2 | Propanone | Appearance | Colorless transparent liquid | Specific gravity: 0.790–0.793 (20/20°C) | Main content ≥99.0%; Density at 20°C ≤0.793 g/cm³
3 | Toluene (industrial grade) | Appearance | Transparent liquid; color not darker than that of a solution containing 0.003 g of potassium dichromate per 100 ml of water | Specific gravity: 0.860–0.870 (20/20°C); Density at 20°C ≤0.870 g/cm³
4 | p-Toluenesulfonic acid | Appearance | White crystalline powder | Total acidity ≥95.0%; Free acid ≤1.0%; Moisture content ≤4.0%
5 | Sodium bicarbonate | Appearance | White crystalline powder | Purity ≥99.0%
6 | Hydrochloric acid | Appearance | Light yellow transparent liquid (no precipitates) | Purity ≥27%
7 | Sodium hydroxide | Appearance | Colorless transparent liquid; ion-exchange resin base | Purity ≥30%

III. Basic Reaction Principle and Chemical Equation

Basic principles of the reaction and chemical equations. IV. Brief description of production processes and techniques. (I) Synthesis stage 1. Inspection and preparation work (1) Check whether there are any debris in the reactor, whether any residual material remains inside it, and whether the machinery, electrical systems, and instruments are functioning properly. (2) Check whether the valves on the metering tank and the boiler are in the correct position. (3) Prepare diethyl ether in the diethyl ether metering tank, and prepare the recovered diethyl ether in the recovered diethyl ether metering tank. (4) The toluene metering tank is prepared with toluene. (5) Prepare propylene in the propylene metering tank according to the feeding ratio. (6) Prepare the recording paper and fill in the amount added, batch number, and operator. 2. Material feeding: (1) Open the vent valve (above the condenser), the discharge valve of the diethyl ether metering tank, and the feed valve for diethyl ether on the synthesis reactor, then add 1.4 T of diethyl ether (1320 L), which has been measured accurately. (2) Open the discharge valve of the recycled diethyl ether metering tank and the feed valve of the synthesis reactor, and add 700 L (approximately 440 Kg) of the measured recycled diethyl ether. (3) Open the discharge valve of the toluene metering tank and the feed valve of the synthesis reactor, and add 600 L of the measured toluene. (4) Start stirring, open the manhole on the synthesis reactor, and add 180 kg of p-toluenesulfonic acid to the reactor bag by bag through the manhole. When adding it, be careful to remove the manhole cover gently and place it on the ground. When adding the catalyst to the reactor, make sure not to let the inner bags fall inside. After addition is complete, when putting the manhole cover back in place, secure it diagonally using clamps (ensure the clamps are fully tightened). 3. Reaction control

It would be great if there were flowcharts and reaction principles

Hello, I’ve just started using this product. Could I talk to you and ask for some advice? My number is 531479523