Treatment method of titanium-containing waste solution
A treatment method and technology for titanium waste liquid, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of low waste liquid treatment efficiency and low recovery rate, etc. Facilitate separation and treatment, improve recovery rate, and increase the effect of precipitation
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Embodiment 1
[0031] The titanium-containing waste liquid used in Example 1 and Comparative Examples 1-3 is the waste liquid produced in the process of preparing the solid component of the olefin polymerization catalyst according to the following steps: under nitrogen protection conditions, 450kg MgCl 2 2.6EtOH carrier and 1700L hexane were first mixed and pre-cooled to -20°C, and then added to 3300L of titanium tetrachloride that was also pre-cooled and cooled. After mixing for 3 hours, the temperature was raised to 110°C. During the heating process, at 20 Add 96kg internal electron donor (ester compound) at ℃, control the reaction pressure to 0.2MPa, and the reaction temperature to 110℃, carry out constant temperature reaction for 0.5h, and finally carry out standing, decanting, suction and pressure filtration to obtain titanium-containing waste liquid.
Embodiment 2
[0032] The titanium-containing waste liquid used in embodiment 2 is the waste liquid produced in the process of preparing the solid component of the olefin polymerization catalyst according to the following steps: under nitrogen protection conditions, 450kg MgCl 2 2.6EtOH carrier and 2400L hexane were first mixed and pre-cooled to -20°C, and then added to 2650L of titanium tetrachloride which was also pre-cooled and cooled. After mixing for 3 hours, the temperature was raised to 110°C. During the heating process, at 20 Add 96kg internal electron donor (ester compound) at ℃, control the reaction pressure to 0.2MPa, and the reaction temperature to 110℃, carry out constant temperature reaction for 0.5h, and finally carry out standing, decanting, suction and pressure filtration to obtain titanium-containing waste liquid.
Embodiment 3
[0033] The titanium-containing waste liquid used in embodiment 3 is the waste liquid produced in the process of preparing the solid component of the olefin polymerization catalyst according to the following steps: under nitrogen protection conditions, 450kg MgCl 2 2.6EtOH carrier and 1300L hexane were first mixed and pre-cooled to -20°C, and then added to 3700L of titanium tetrachloride that was also pre-cooled and cooled. After mixing for 3 hours, the temperature was raised to 110°C. During the heating process, at 20 Add 96kg internal electron donor (ester compound) at ℃, control the reaction pressure to 0.2MPa, and the reaction temperature to 110℃, carry out constant temperature reaction for 0.5h, and finally carry out standing, decanting, suction and pressure filtration to obtain titanium-containing waste liquid.
[0034] Example 1
[0035] Under nitrogen protection conditions, the titanium-containing waste liquid (titanium tetrachloride, chloroethoxytitanium in titanium te...
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