Hydrogenation decolorization method of petroleum resin
A petroleum resin and decolorization technology, which is applied in the field of petroleum resin production, can solve the problems of unreasonable hydrogenation decolorization method, affecting the normal use of resin, poor resin decolorization effect, etc., and achieves good decolorization effect, thorough reaction and improved efficiency.
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Embodiment 1
[0025] A method for hydrogenation decolorization of petroleum resin, comprising the following steps:
[0026] (1) Put the petroleum resin into the dissolution kettle, then add the organic solvent, adjust the rotation speed to 100-200r / min to dissolve, dissolve the solution for 1.5-2h, then add the solution to the impurity removal reactor, remove the colloid, and then process the solution Preheating;
[0027] (2) Inject the preheated solution in the above step (1) into a hydrogenation fixed-bed reactor, cover the surface of the solution with a layer of catalyst A, raise the temperature to 240-280°C, and then pass in hydrogen for one hydrogenation Hydrogen decolorization reaction, stop feeding hydrogen after reacting for 3-4h;
[0028] (3) Pump the solution that has undergone the first reaction in the above step (2) into the second-stage hydrogenation fixed-bed reactor, cover the surface of the solution with a layer of catalyst B, raise the temperature to 280-320°C, and then in...
Embodiment 2
[0033] A method for hydrogenation decolorization of petroleum resin, comprising the following steps:
[0034] (1) Put the petroleum resin into the dissolution kettle, then add the organic solvent, adjust the rotation speed to 100-200r / min to dissolve, dissolve the solution for 1.5-2h, then add the solution to the impurity removal reactor, remove the colloid, and then process the solution Preheating;
[0035] (2) Inject the preheated solution in the above step (1) into a hydrogenation fixed-bed reactor, cover the surface of the solution with a layer of catalyst A, raise the temperature to 240-280°C, and then pass in hydrogen for one hydrogenation Hydrogen decolorization reaction, stop feeding hydrogen after reacting for 3-4h;
[0036] (3) Pump the solution that has undergone the first reaction in the above step (2) into the second-stage hydrogenation fixed-bed reactor, cover the surface of the solution with a layer of catalyst B, raise the temperature to 280-320°C, and then in...
Embodiment 3
[0041] A method for hydrogenation decolorization of petroleum resin, comprising the following steps:
[0042] (1) Put the petroleum resin into the dissolution kettle, then add the organic solvent, adjust the rotation speed to 100-200r / min to dissolve, dissolve the solution for 1.5-2h, then add the solution to the impurity removal reactor, remove the colloid, and then process the solution Preheating;
[0043] (2) Inject the preheated solution in the above step (1) into a hydrogenation fixed-bed reactor, cover the surface of the solution with a layer of catalyst A, raise the temperature to 240-280°C, and then pass in hydrogen for one hydrogenation Hydrogen decolorization reaction, stop feeding hydrogen after reacting for 3-4h;
[0044] (3) Pump the solution that has undergone the first reaction in the above step (2) into the second-stage hydrogenation fixed-bed reactor, cover the surface of the solution with a layer of catalyst B, raise the temperature to 280-320°C, and then in...
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