A flue gas deoxidation and recovery starch milk heating system

Abstract

The present invention discloses a flue gas de-whitening and recycling starch milk temperature-raising system, which specifically relates to the technical field of flue gas de-whitening and recycling, and comprises a sugar-making module, wherein the output end of the sugar-making module is provided with an induced draft washing module, the output end of the induced draft washing module is provided with a circulation module, the output end of the circulation module is provided with a heat exchange module, and the output end of the heat exchange module is connected with the input end of the sugar-making module. The present invention, through the arrangement of the induced draft washing module, the circulation module and the heat exchange module, allows the gas discharged from the sugar-making workshop to pass through the waste gas spray washing tower and condense into water, thereby improving the thermal energy utilization rate of the flue gas, and the condensed water exchanges heat with the starch milk, and through a reasonable equipment structure and heat exchange method, the discharged water vapor is completely condensed to achieve complete de-whitening, and the energy is recycled to heat the starch milk, and the starch milk temperature is increased from 35 degrees to 45 degrees, thereby improving the yield of the starch milk, being beneficial to sugar production, realizing the recycling of water energy, and being beneficial to environmental protection.

Description

Technical Field

[0001] The embodiment of the present invention relates to the technical field of flue gas deoxidation and recycling, and specifically to a starch milk heating system for flue gas deoxidation and recycling. Background Art

[0002] People in the starch, thermal power and other industries are well aware that the so-called "white flue gas" is actually water vapor. When the chimney discharges saturated wet flue gas and comes into contact with the ambient air with a lower temperature, the water vapor contained in the flue gas condenses. The condensed water droplets refract and scatter the light, making the flue gas appear white or gray, especially on cloudy days with insufficient light, giving people the illusion of "black smoke". Ordinary people believe that "black smoke" is being discharged and it is a form of pollution.

[0003] The discharge of water vapor releases a large amount of heat, which is also a waste of energy. When the ambient temperature is low, the water droplets condensed around the chimney will be blown away by the wind and are difficult to collect. On-site management increases the labor intensity of employees.

[0004] The corn starch workshop produces starch milk sugar, but the temperature of the finished starch milk is low and the sugar workshop needs to heat it up, resulting in energy waste.

[0005] However, flue gas treatment and energy recovery are difficult problems to solve. Summary of the invention

[0006] To this end, an embodiment of the present invention provides a system for heating starch milk by recycling and utilizing flue gas to eliminate white smoke. By setting up an induced draft washing module, a circulation module and a heat exchange module, the system realizes the white smoke elimination in the sugar factory area and the recycling of energy, thereby increasing the temperature of the starch milk on its way to the sugar workshop and increasing the starch yield, so as to solve the problem in the prior art that energy is wasted and cannot be utilized due to the exhaust of flue gas.

[0007] In order to achieve the above-mentioned purpose, the embodiment of the present invention provides the following technical solutions: a flue gas deoxidation and recovery and utilization starch milk heating system, comprising a sugar making module, an induced draft washing module is provided at the output end of the sugar making module, a circulation module is provided at the output end of the induced draft washing module, a heat exchange module is provided at the output end of the circulation module, and the output end of the heat exchange module is connected to the input end of the sugar making module;

[0008] The sugar-making module is used to use the gas exhausted during sugar-making as the exhaust gas raw material of the induced draft washing module, and to use the material treated by the heat exchange module as the raw material for sugar-making;

[0009] The induced draft washing module is used to attract and concentrate the gas exhausted from the sugar making module and then perform spray washing treatment;

[0010] The circulation module is used to transport the condensed water after being processed by the induced draft washing module to the heat exchange module;

[0011] The heat exchange module is used to further condense the uncondensed gas into water for utilization, and to exchange the temperature of the condensed water with that of the sugar-making raw material.

[0012] Furthermore, the sugar-making module includes a sugar-making workshop.

[0013] Furthermore, the induced draft washing module comprises an exhaust gas induced draft fan and an exhaust gas spray washing tower, and the output end of the exhaust gas induced draft fan is connected to the input end of the exhaust gas spray washing tower.

[0014] Furthermore, the circulation module comprises a circulation water pump and a circulation water pipeline, and the output end of the circulation water pump is connected to the input end of the circulation water pipeline.

[0015] Furthermore, the heat exchange module includes an exhaust gas heat exchanger, a cooling fan, a mixing air duct, an environmental protection center and starch milk, the input end of the exhaust gas heat exchanger is connected to the output end of the cooling fan, the input end of the exhaust gas heat exchanger is connected to the output end of the starch milk, the output end of the exhaust gas heat exchanger is connected to the input end of the starch milk, the output end of the exhaust gas heat exchanger is connected to the input end of the mixing air duct, and the output end of the mixing air duct is connected to the input end of the environmental protection center.

[0016] Furthermore, the output end of the sugar-making workshop is connected to the input end of the exhaust gas induced draft fan, the output end of the exhaust gas spray washing tower is connected to the input end of the circulating water pump, the output end of the circulating water pipeline is connected to the input end of the exhaust gas heat exchanger, and the output end of the starch milk is connected to the input end of the sugar-making workshop.

[0017] Furthermore, the output end of the environmental protection center is connected to the input end of the industrial and domestic circulating water pipeline.

[0018] The embodiments of the present invention have the following advantages:

[0019] 1. Compared with the prior art, the present invention provides an induced draft washing module, a circulation module and a heat exchange module. The gas discharged from the sugar workshop passes through an exhaust gas spray washing tower, and the water condensed by the spray absorbs part of the heat, and passes through a circulating water pump to the exhaust gas heat exchanger for heat exchange with starch milk. The cold medium of the heat exchanger is starch milk. After the heat exchange, the starch milk goes to the sugar workshop, and the condensed water exchanges heat with the starch milk. Through a reasonable equipment structure and heat exchange method, the discharged water vapor is completely condensed to achieve complete whitening. Energy is recycled to heat the starch milk, and the starch milk temperature is increased from 35 degrees to 45 degrees, thereby improving the yield of starch milk and facilitating sugar production.

[0020] 2. Compared with the prior art, the present invention uses the heat exchange module to allow the water vapor that has not been completely absorbed after passing through the exhaust gas spray scrubber to enter the exhaust gas heat exchanger. The cold medium of the exhaust gas heat exchanger is the ambient temperature air blown by the large air volume cooling fan, which is used to condense the water vapor. The air after heat exchange and the last small part of the uncondensed gas enter the mixing air duct for condensation. The water condensed from the exhaust gas heat exchanger and the condensed water from the mixing air duct are sent to the environmental protection center for treatment and recycling, thus realizing the recycling of water energy and benefiting environmental protection.

[0021] 3. Compared with the prior art, the present invention, through the arrangement of cooling fans and mixing ducts, completely condenses the discharged water vapor through the exhaust gas spray washing tower spray absorption and the exhaust gas heat exchanger and then to the mixing duct, completely eliminating "white smoke", thereby improving the thermal energy utilization rate of the flue gas and eliminating people's doubts about "white smoke". BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0023] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0024] Figure 1 It is the overall system topology diagram of the present invention;

[0025] Figure 2 It is the overall system module diagram of the present invention;

[0026] Figure 3 It is the overall system structure block diagram of the present invention;

[0027] Figure 4 This is a structural block diagram of the induced draft washing module system of the present invention;

[0028] Figure 5 This is a block diagram of the circulation module system structure of the present invention;

[0029] Figure 6 This is a structural block diagram of the heat exchange module system of the present invention.

[0030] In the figure: 1. Sugar-making module; 2. Induced draft washing module; 3. Circulation module; 4. Heat exchange module; 5. Sugar-making workshop; 6. Exhaust induced draft fan; 7. Exhaust gas spray washing tower; 8. Circulating water pump; 9. Circulating water pipeline; 10. Exhaust gas heat exchanger; 11. Cooling fan; 12. Mixing duct; 13. Environmental protection center; 14. Starch milk. DETAILED DESCRIPTION

[0031] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Refer to the instruction manual Figure 1-6 The embodiment of the present invention is a system for heating starch milk by recycling smoke whitening, comprising a sugar-making module 1, wherein the output end of the sugar-making module 1 is provided with an induced draft washing module 2, the output end of the induced draft washing module 2 is provided with a circulation module 3, the output end of the circulation module 3 is provided with a heat exchange module 4, and the output end of the heat exchange module 4 is connected to the input end of the sugar-making module 1;

[0033] The sugar-making module 1 is used to use the gas exhausted during sugar-making as the exhaust gas raw material of the induced draft washing module 2, and to use the material treated by the heat exchange module 4 as the raw material for sugar-making;

[0034] The induced draft washing module 2 is used to attract and concentrate the gas exhausted from the sugar making module 1 and then perform spray washing treatment;

[0035] The circulation module 3 is used to transport the condensed water after being processed by the induced draft washing module 2 to the heat exchange module 4;

[0036] The heat exchange module 4 is used to further condense the uncondensed gas into water for utilization, and to exchange the temperature of the condensed water with that of the sugar raw material.

[0037] Furthermore, the sugar-making module 1 includes a sugar-making workshop 5. The gas exhausted from the sugar-making workshop 5 during sugar-making can be used as the exhaust gas raw material of the induced draft washing module 2. The sugar-making workshop 5 can use the material processed by the heat exchange module 4 as the raw material for sugar-making.

[0038] Furthermore, the induced draft washing module 2 includes an exhaust gas induced draft fan 6 and an exhaust gas spray washing tower 7. The output end of the exhaust gas induced draft fan 6 is connected to the input end of the exhaust gas spray washing tower 7. The exhaust gas induced draft fan 6 can attract and concentrate the gas discharged from the sugar workshop 5 into the exhaust gas spray washing tower 7 for spray washing treatment.

[0039] Furthermore, the circulation module 3 includes a circulating water pump 8 and a circulating water pipe 9, the output end of the circulating water pump 8 is connected to the input end of the circulating water pipe 9, and the circulating water pump 8 can transport the water condensed after treatment by the exhaust gas spray washing tower 7 to the heat exchange module 4 through the circulating water pipe 9.

[0040] Furthermore, the heat exchange module 4 includes an exhaust gas heat exchanger 10, a cooling fan 11, a mixing air duct 12, an environmental protection center 13 and a starch milk 14. The input end of the exhaust gas heat exchanger 10 is connected to the output end of the cooling fan 11, the input end of the exhaust gas heat exchanger 10 is connected to the output end of the starch milk 14, the output end of the exhaust gas heat exchanger 10 is connected to the input end of the starch milk 14, the output end of the exhaust gas heat exchanger 10 is connected to the input end of the mixing air duct 12, and the output end of the mixing air duct 12 is connected to the input end of the environmental protection center 13. The cooling fan 11 and the mixing air duct 12 can further condense the uncondensed gas in the exhaust gas spray washing tower 7 into water for increasing condensed water. The exhaust gas heat exchanger 10 facilitates heat exchange between the condensed water and the starch milk 14.

[0041] Furthermore, the output end of the sugar-making workshop 5 is connected to the input end of the exhaust gas induced draft fan 6, the output end of the exhaust gas spray washing tower 7 is connected to the input end of the circulating water pump 8, the output end of the circulating water pipeline 9 is connected to the input end of the exhaust gas heat exchanger 10, and the output end of the starch milk 14 is connected to the input end of the sugar-making workshop 5, so that the sugar-making module 1, the induced draft washing module 2, the circulation module 3 and the heat exchange module 4 form a loop, thereby realizing the smoke elimination and hot gas energy recovery of the sugar-making workshop 5.

[0042] Furthermore, the output end of the environmental protection center 13 is connected to the input end of the industrial and domestic circulating water pipelines, thereby realizing the recycling of water energy and being beneficial to environmental protection.

[0043] The specific implementation scenario is as follows: the gas discharged from the sugar workshop 5 passes through the waste gas spray washing tower 7, absorbs part of the heat through the spray condensed water, passes through the circulating water pump 8 to the waste gas heat exchanger 10 for heat exchange with starch milk 14. The cold medium of the heat exchanger is starch milk 14. After heat exchange, the starch milk 14 goes to the sugar workshop 5, and the condensed water exchanges heat with the starch milk 14. Through reasonable equipment structure and heat exchange method, the discharged water vapor is completely condensed to achieve complete whitening. Energy is recycled to heat the starch milk. The starch milk temperature is increased from 35 degrees to 45 degrees, which improves the yield of starch milk and is beneficial to sugar production. After passing through the waste gas spray washing tower 7, the unabsorbed water vapor enters the waste gas heat exchanger 1 0. The cold medium of the exhaust gas heat exchanger 10 is the ambient temperature air blown by the large-volume cooling fan 11, which is used to condense water vapor. The air after heat exchange and the last small part of the uncondensed gas enter the mixing wind tube 12 for condensation. The water condensed by the exhaust gas heat exchanger 10 and the condensed water in the mixing wind tube 12 are sent to the environmental protection center 13 for treatment and recycling. After the exhaust gas spray washing tower 7 sprays and absorbs and the exhaust gas heat exchanger 10 and then goes to the mixing wind tube 12, the discharged water vapor is completely condensed, and there is no "white smoke" at all, which improves the thermal energy utilization rate of the flue gas and eliminates people's doubts about the "white smoke". This implementation method specifically solves the problem of energy waste and inability to utilize due to the exhaust of flue gas in the prior art.

[0044] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A flue gas deoxidation and starch milk heating system for recycling, comprising a sugar making module (1), characterized in that: The output end of the sugar-making module (1) is provided with an induced draft washing module (2), the output end of the induced draft washing module (2) is provided with a circulation module (3), the output end of the circulation module (3) is provided with a heat exchange module (4), and the output end of the heat exchange module (4) is connected to the input end of the sugar-making module (1); The sugar-making module (1) is used to use the gas exhausted during sugar-making as the waste gas raw material of the induced draft washing module (2), and to use the material processed by the heat exchange module (4) as the raw material for sugar-making; The induced draft washing module (2) is used to attract and concentrate the gas exhausted from the sugar production module (1) and then perform a spray washing treatment; The circulation module (3) is used to transport the condensed water after being processed by the induced draft washing module (2) to the heat exchange module (4); The heat exchange module (4) is used to further condense the uncondensed gas into water for use, and to exchange the temperature of the condensed water with that of the sugar raw material; The sugar-making module (1) comprises a sugar-making workshop (5); The induced draft washing module (2) comprises an exhaust gas induced draft fan (6) and an exhaust gas spray washing tower (7), and the output end of the exhaust gas induced draft fan (6) is connected to the input end of the exhaust gas spray washing tower (7); The heat exchange module (4) comprises an exhaust gas heat exchanger (10), a cooling fan (11), a mixing air duct (12), an environmental protection center (13) and a starch emulsion (14); the input end of the exhaust gas heat exchanger (10) is connected to the output end of the cooling fan (11); the input end of the exhaust gas heat exchanger (10) is connected to the output end of the starch emulsion (14); the output end of the exhaust gas heat exchanger (10) is connected to the input end of the starch emulsion (14); the output end of the exhaust gas heat exchanger (10) is connected to the input end of the mixing air duct (12); and the output end of the mixing air duct (12) is connected to the input end of the environmental protection center (13).

2. The system for heating up starch milk by recycling smoke whitening according to claim 1, characterized in that: The circulation module (3) comprises a circulation water pump (8) and a circulation water pipeline (9), and the output end of the circulation water pump (8) is connected to the input end of the circulation water pipeline (9).

3. The system for heating up starch milk by recycling smoke whitening according to claim 1, characterized in that: The output end of the sugar-making workshop (5) is connected to the input end of the exhaust gas induced draft fan (6), the output end of the exhaust gas spray washing tower (7) is connected to the input end of the circulating water pump (8), the output end of the circulating water pipeline (9) is connected to the input end of the exhaust gas heat exchanger (10), and the output end of the starch milk (14) is connected to the input end of the sugar-making workshop (5).

4. The system for heating up starch milk by recycling smoke whitening according to claim 1, characterized in that: The output end of the environmental protection center (13) is connected to the input end of the industrial and domestic circulating water pipeline.

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