Temperature-controlling measure for the hydrogenation slurry bed reactor and its design method and use

A temperature-controlling method employed in a hydrogenation slurry bed reactor system, comprising:

• setting three control points in turn from low to high:
• automatically injecting cold hydrogen in response to determining that the reactor system reaches control point 1;
• automatically injecting cold oil in response to determining that the reactor system reaches control point 2;
• wherein each pressure relief point is opened automatically in response to determining that the reactor system reaches control point 3;
• wherein the control point 1 is:
• 425° C.T<440° C. and/or P19 MPa;
• the control point 2 is:
• 440° C.T<455° C. and/or P19 MPa;
• the control point 3 is:
• T455° C. and/or P20 MPa;
• setting the pressure relief point before and/or after a circulation pump of the reactor in response to determining that internal circulation is set in the reactor system;
• and
• setting the pressure relief point at the bottom of the reactor system in response to determining that the internal circulation is not set in the reactor system, at least one pressure relief valve being set at each pressure relief point;
• wherein the at least one pressure relief valve is controlled by a temperature or pressure in the reactor system, a number of temperature measurement points being at least 1, a number of pressure measurement points being at least 1 and further comprising:
• setting a temperature self-control valve and/or hand control valve, the pressure relief valve opening and an alarm being triggered in response to determining that the reactor system operates at more than 455° C. or an operating pressure is more than 20 MPa;
• and opening all control valves and shutting down the reactor system in response to determining that the reactor system temperature is more than 465° C. and the operating pressure is more than 21.5 MPa.