Steam system energy-saving device and method

Abstract

The invention belongs to the field of petrochemical production, and particularly relates to steam system energy-saving device and method. The steam system energy-saving device comprises a by-path a, amedium-pressure condensate supplement line c, a medium-pressure steam pressure control module PC2C and a medium-pressure steam temperature detector PT2, wherein the by-path a is connected with a low-pressure steam manifold b and a medium-pressure steam manifold from the outside; a medium-pressure steam pressure regulating valve PV2C and a medium-pressure steam desuperheater SP2 are arranged on the by-path a; the medium-pressure condensate supplement line c is used for supplementing a condensate for the medium-pressure steam desuperheater SP2; a medium-pressure condensate temperature regulating valve TV2 is arranged on the medium-pressure condensate supplement line c and is used for controlling the condensate supplement amount; the medium-pressure steam pressure control module PC2C is usedfor controlling the medium-pressure steam pressure regulating valve PV2C. According to the device and the method provided by the invention, the low-efficiency use of high-pressure steam can be greatly reduced, and the high-pressure steam is saved.

Description

technical field [0001] The invention belongs to the field of petrochemical production, and in particular relates to an energy-saving device and method for a steam system, which enables a multi-stage steam system to use heat energy rationally and makes the system more stable. Background technique [0002] The steam heating system in the current petrochemical plant is extremely important and a necessary means of energy utilization. Usually petrochemical enterprises will set up the steam supply system according to the usage conditions and demands of public works. The high-pressure steam from outside or from the boiler is usually decompressed in two stages, and it is designed as medium-pressure and low-pressure steam for the whole plant. Some factories have high pressure or medium (low) pressure steam source at the same time. The graded use of steam is an efficient way of energy consumption. The planning of the steam system should be able to meet the various working condition...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the deficiencies in the above-mentioned prior art, the present invention provides a steam system energy-saving device and method to solve the energy loss caused by unstable steam temperature and pressure

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