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Urea melting equipment and application method thereof

A melting equipment, urea technology, applied in application, urea compound fertilizer, nitrogen fertilizer and other directions, can solve the problems affecting heat transfer efficiency, steam coil wall thickness, etc., and achieve the effect of increasing the heating area, reducing energy consumption, and reducing temperature difference

Active Publication Date: 2013-09-18
SHENZHEN BATIAN ECOTYPIC ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, when steam is used as the heat transfer medium, the steam coil needs to withstand a relatively large steam pressure, and the wall of the steam coil needs to be made relatively thick, which affects the heat transfer efficiency.

Method used

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  • Urea melting equipment and application method thereof
  • Urea melting equipment and application method thereof

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Embodiment Construction

[0023] Such as figure 2 As shown, the present invention is a urea melting equipment, including a melting tank 1 , a stirring device 2 , a heating coil 3 , a hot oil tank 6 , and a heating conduit 5 . The stirring device 2 is a stirring motor 21 , a stirring shaft 22 driven by the stirring motor 21 and a turning leaf 23 on the stirring shaft 22 ; a crawler feeder 9 is arranged above the melting tank 1 . The heating coil 3 is arranged in the melting tank 1 , and the heating plate 3 is externally connected to the thermal oil tank 6 through the heating conduit 5 , and the thermal oil tank 6 and the heating coil 5 form a thermal oil circulation loop through the heating conduit 5 . The heating conduit 5 on the hot oil circulation circuit is specifically divided into an upper heating conduit 51 and a lower heating conduit 52, which respectively form an upper heating oil circulation channel and a lower heating oil circulation channel, and on the lower heating conduit 52, a thermal oi...

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Abstract

The invention discloses urea melting equipment and an application method of the urea melting equipment, and belongs to the field of urea high-tower granulation processes in the industry of compound fertilizers. The urea melting equipment comprises a melting trough, a stirring device for stirring melting liquid in the melting trough, an ultrasonic melting trough in which an ultrasonic generator is arranged and a pump body, wherein a heating coil pipe is arranged in the melting trough and externally connected with a hot oil trough through a heating guide pipe; the hot oil trough and the heating coil pipe form a hot oil circulation loop through the heating guide pipe; the pump body is used for pumping the melting liquid in the melting trough into the ultrasonic melting trough; and the ultrasonic melting trough is connected with the melting trough through a backflow guide pipe. According to the urea melting equipment, the amount of biuret can be reduced during melting of urea; due to the application of the equipment, the melting temperature is lower than 130 degrees, so that the temperature difference between heating equipment and a urea contact part is reduced, and the biuret is reduced.

Description

technical field [0001] The invention belongs to the field of urea-based high-tower granulation technology in the compound fertilizer industry, and particularly relates to urea melting equipment used in the technology field, and the invention also includes an application method of the urea melting equipment. Background technique [0002] The melting temperature of agricultural urea is 130°C. When the melting temperature exceeds 130°C, biuret substances will be produced in the urea melt. If the biuret content in agricultural fertilizers exceeds the standard, it will cause seedling burning, which is more harmful to crops. Big. In the actual fertilizer production process, in order to improve the melting efficiency and reduce the cost, the saturated steam generated by the coal-fired boiler is generally used to heat the urea particles through the coil to melt them into liquid in the melting tank, and the saturated steam is used as the heat transfer medium. [0003] The urea melti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05C9/00
Inventor 王春建
Owner SHENZHEN BATIAN ECOTYPIC ENG
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