Steam constant temperature control device of urea melting system for ureabased compound fertilizer production
A urea-based compound fertilizer and constant temperature control technology, which is applied in urea compound fertilizers, fertilization devices, and temperature control using electric methods, can solve the problems of high and low urine temperature, easy blockage of urine pump by crystals, production line shutdown, etc.
Inactive Publication Date: 2012-05-09
JIANGSU RIGHT MASCH GRP CO LTD
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Problems solved by technology
[0002] In the existing urea-based compound fertilizer production, the control of the steam valve heated by the steam of the urea melting system is manually controlled by manually looking at the thermometer display on the urea melting tank. Since the melting point of urea is 132.7°C, urine is easy to form Biuret, because biuret has a great impact on crops, the switching value of the manual control valve will cause the urine temperature to rise and fall sometimes, and sometimes it is easy to form biuret when it exceeds 132.7°C, and biuret is contained in urine In the base compound fertilizer, it will affect the growth of crops. When the temperature of the urine is low, there will be crystals in the urine, and the crystals will easily block the urine pump, causing the entire production line to stop production and affecting the production of urine-based compound fertilizers.
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[0009] Such as figure 1 As shown, the steam constant temperature control device of the urine melting system for producing urine-based compound fertilizers of the present invention includes a urine melting tank 1, a stirring pump 5 arranged on the urine melting tank, a urine pump 2, a digital display temperature controller 4 and an electric steam regulator. Valve 5, wherein the digital display temperature controller 4 is connected with the steam electric regulating valve 5.
[0010] When the steam constant temperature control device of the urea-based compound fertilizer production system of the present invention is working, the valve will be automatically closed when the temperature is higher than 130°C, and the valve will be automatically opened when the temperature is lower than 122°C, so that the temperature of the urine is kept at 122°C. ~130°C, which ensures the constant urine temperature.
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The invention discloses a steam constant temperature control device of a urea melting system for ureabased compound fertilizer production, which is characterized by comprising a urea melting slot as well as a stirring pump, a urine pump, a digital display temperature control instrument and a steam electric adjusting valve which are all arranged on the urea melting slot, wherein the digital display temperature control instrument is connected with the steam electric adjusting valve. The steam constant temperature control device of a urea melting system for ureabased compound fertilizer production has the following advantages that the steam electric adjusting valve and the digital display temperature control instrument are adopted, therefore, the valve can be automatically closed when the temperature is higher than 130 DEG C and opened when the temperature is lower than 122 DEG C so that the temperature of urine is kept between 122 DEG C and 130 DEG C constantly and can not rise or fall suddenly, the urine cannot form biuret because the temperature raises to 132.7 DEG C or form crystals to block the urine pump because the temperature is lowered, and the product quality of ureabased compound fertilizer and the smooth production of the ureabased compound fertilizer can be ensured.
Description
technical field [0001] The invention relates to a constant temperature control device in the production process of urea-based compound fertilizer, which is used for preventing the formation of biuret and crystallization in the process of urea-based compound fertilizer production, and belongs to the field of chemical machinery. Background technique [0002] In the existing urea-based compound fertilizer production, the control of the steam valve heated by the steam of the urea melting system is manually controlled by manually looking at the thermometer display on the urea melting tank. Since the melting point of urea is 132.7°C, urine is easy to form Biuret, because biuret has a great impact on crops, the switching value of the manual control valve will cause the urine temperature to rise and fall sometimes, and sometimes it is easy to form biuret when it exceeds 132.7°C, and biuret is contained in urine In the base compound fertilizer, it will affect the growth of crops. Whe...
Claims
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IPC IPC(8): C05G1/00G05D23/19C05C9/00
Inventor 周建伟刘培东储秋生
Owner JIANGSU RIGHT MASCH GRP CO LTD