A kind of sugar boiling tank with waste heat recycling

Abstract

The invention discloses a sugar boiling pot capable of recycling waste heat. The sugar boiling pot comprises a pot bottom, a steam chamber and a steam drum, wherein the pot bottom is provided with a feed pipe and a massecuite outlet, a juice catcher and a juice steam outlet are formed in the steam chamber, a steam condensate drainage pipe, a heating steam inlet pipe and a non-condensable gas drainage pipe are arranged on the steam drum, and an outlet of the non-condensable gas drainage pipe is connected to the feed pipe; two non-condensable gas inlets, namely a non-condensable gas lower inlet and a non-condensable gas upper inlet, are formed in the non-condensable gas drainage pipe; the distance from the non-condensable gas lower inlet to a lower tube plate is 100-200mm; the non-condensable gas upper inlet is formed above an upper tube plate with a distance of 5-10mm; and a valve is arranged on the non-condensable gas drainage pipe and is used for controlling the on-off and quantity of the discharge of non-condensable gas. According to the sugar boiling pot disclosed by the invention, syrups or molasses can be heated by using the heat of the non-condensable gas, and the heat energy of the non-condensable gas can be recycled so as to ensure that the problem that the non-condensable gas is directly discharged to cause energy waste in a conventional sugar boiling process can be solved.

Description

technical field [0001] The invention relates to a sugar cooking pot for recycling waste heat, and belongs to the technical field of sugar production engineering. Background technique [0002] In the sugar industry, sugar cane (or sugar beet) is squeezed to extract juice, cleaned and impurity removed, and evaporated to concentrate to obtain syrup. The syrup can be boiled and crystallized to obtain white sugar. Sugar boiling is a key link in the sugar making process, which has an important impact on product quality and energy consumption of the whole plant. Its main task is to concentrate syrup or molasses to a certain supersaturation in the sugar boiling tank (or crystallization tank) Then drop in crystal seeds (sugar paste or powdered sugar), and gradually grow the crystals to obtain sucrose crystals that meet the product quality requirements. [0003] The heating steam used for sugar cooking mainly comes from the first-effect juice vapor and the second-effect juice vapor i...

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Problems solved by technology

[0005] The purpose of the present invention is to address the deficiencies in the prior art, to provide a sugar cooking tank for waste heat recycling, to recover the heat energy of the non-condensable gas in the sugar heating steam, and to solve the problem of the direct discharge of the non-condensable gas in the sugar heating steam into the atmosphere , resulting in a waste of energy

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