Regeneration soft water device of sludge treatment system

Abstract

The utility model relates to the technical field of sludge treatment, and discloses a regeneration water softening device of a sludge treatment system. A steam boiler is arranged between a secondary combustion chamber and a spray drying tower; the steam boiler is connected with a soft water regeneration device; the steam boiler comprises a boiler body, and the soft water regeneration device comprises a steam header, a return water collection tank, an ion exchanger and a water storage tank; the steam header is connected with the air inlet channel through a first steam branch pipe and is connected with the sludge dryer through a second steam branch pipe; the air inlet channel is connected with a first water return pipe, the sludge drying machine is connected with a second water return pipe, the first water return pipe and the second water return pipe are connected with a return water collecting box, the return water collecting box is connected with a secondary water liquid return pipe through a first water pump, and the secondary water liquid return pipe is connected with an ion exchanger; the ion exchanger is connected with the water storage tank through a first pipeline, the water storage tank is connected with a water inlet pipe through a second water pump, and the water inlet pipe is connected with the water supplementing bin. The utilization of water can be effectively improved, and the sludge treatment cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge treatment, in particular to a regeneration softening water device of a sludge treatment system. Background Art

[0002] Application publication number CN116817283A discloses an energy-saving and environmentally friendly sludge treatment system, including a combustion chamber, a rotary kiln, a secondary combustion chamber, a spray drying tower, a desulfurization tower, a bag dust collector, an induced draft fan, a spray system and a chimney, a waste heat boiler is arranged between the upper end of the secondary combustion chamber and the upper end of the spray drying tower; a carbon monoxide emission control device is arranged on the secondary combustion chamber; the waste heat boiler comprises a flue gas channel in the shape of a "human", and each end of the flue gas channel is fixedly connected with a telescopic joint, and the two telescopic joints are respectively fixed at the upper end of the secondary combustion chamber and the upper end of the spray drying tower; a water-cooled wall is arranged on the inner wall of the flue gas channel, and the upper end of the water-cooled wall is connected with a steam rising component, and the steam rising component is connected to the steam chamber of the boiler drum, and the lower end of the water-cooled wall is connected with a cooling water descending component, and the cooling water descending component is connected to the water storage chamber of the boiler drum; the carbon monoxide emission control device comprises a pair of symmetrically arranged combustion nozzles arranged on the side wall of the secondary combustion chamber. The existing sludge treatment system has the following shortcomings: the sludge entering the combustion chamber and rotary kiln has a high water content or the incoming air temperature is low, or the sludge is first dehydrated by steam and the air is preheated, but the condensed water after steam cooling is directly discharged, the water utilization rate is low, and the sludge treatment cost is increased. Utility Model Content

[0003] The utility model aims to provide a regeneration softening water device for a sludge treatment system, which solves the problems in the background technology, improves the utilization rate of water and reduces the cost of sludge treatment.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A regeneration and softening water device for a sludge treatment system comprises an air inlet channel, a combustion chamber, a rotary kiln, a secondary combustion chamber, a spray drying tower and a sludge dryer, a steam boiler is arranged between the upper end of the secondary combustion chamber and the upper end of the spray drying tower; the steam boiler is connected to a soft water regeneration device;

[0006] The steam boiler comprises a boiler body, the interior of the boiler body is divided into a steam tank and a water replenishment tank;

[0007] The soft water regeneration device includes a steam cylinder, a return water collecting box, an ion exchanger and a water storage tank; the steam cylinder is connected to the steam bin through a main steam pipe, the steam cylinder is connected to the air inlet channel through a first steam branch pipe, and the steam cylinder is connected to the dry mud machine through a second steam branch pipe; the air inlet channel is connected to a first return water pipe, the dry mud machine is connected to a second return water pipe, the other ends of the first return water pipe and the second return water pipe are both connected to a return water collecting box, the return water collecting box is connected to a secondary water return pipe through a first water pump, and the other end of the secondary water return pipe is connected to a water inlet end of the ion exchanger; the water outlet end of the ion exchanger is connected to a water storage tank through a first pipeline, the water storage tank is connected to a water inlet pipe through a second water pump, and the other end of the water inlet pipe is connected to a water replenishment bin.

[0008] Through the above technical solution, the steam generated by the steam boiler enters the sub-cylinder through the main steam pipe, and the sub-cylinder divides the steam into multiple paths. A part of the steam in the sub-cylinder is sent to the air inlet channel through the first steam branch pipe to heat the air passing through the air inlet channel, thereby increasing the temperature of the air entering the combustion chamber and improving the combustion efficiency of the coal; the steam cooled through the air inlet channel condenses into water and enters the return water collection box through the first return water pipe;

[0009] A part of the steam in the steam cylinder is sent to the mud dryer through the second steam pipe, so as to dry the sludge in the mud dryer and reduce the water content of the sludge. The steam or condensed water from the mud dryer enters the return water collection box through the second return water pipe;

[0010] Then the water in the return water collection tank enters the ion exchanger again through the first water pump and the secondary water return pipe, and then the water treated by the ion exchanger enters the water storage tank through the first pipe for storage, and the water in the water storage tank replenishes the water in the water replenishment tank of the boiler body through the second water pump and the water inlet pipe, and the water in the water replenishment tank enters the water-cooled wall through the descending channel, and the water-cooled wall absorbs heat to turn the water into steam and enters the steam bin, thereby forming a water recycling method, which can effectively improve the utilization of water and reduce the cost of sludge treatment.

[0011] The utility model is further configured as follows: a sodium chloride solution supply box is provided on one side of the ion exchanger, and the sodium chloride solution supply box is connected to the ion exchanger through a supply pipe.

[0012] Through the above technical solution, the sodium chloride solution supply tank can supply sodium ions to the ion exchanger, and can replace magnesium ions and calcium ions in hard water;

[0013] At the same time, through the use of the above-mentioned circulating water, sodium ions can be recycled, thereby effectively reducing the amount of sodium chloride used and further reducing the sludge treatment cost.

[0014] The utility model is further configured as follows: the ion exchanger is connected to a tap water supply pipe.

[0015] Through the above technical solution, the tap water supply pipe can supply water to the soft water regeneration device. Since the tap water is hard water, it needs to be softened by an ion exchanger.

[0016] The utility model is further configured as follows: a plurality of air inlet channels and mud dryers are provided.

[0017] The steam dividing cylinder can divide the steam into multiple paths, and can supply steam to the air inlet channel and multiple mud dryers at the same time.

[0018] The utility model is further configured as follows: the air inlet channel includes an inner tube and an outer tube arranged coaxially, the inner tube is connected to the blower and the combustion chamber; sealing plates are provided between the two ends of the outer tube and the two ends of the inner tube, the two sealing plates, the inner tube and the outer tube form a heating chamber, and the first steam branch pipe and the first return water pipe are both connected to the heating chamber.

[0019] The beneficial effects of the utility model are:

[0020] Compared with the prior art, the steam generated by the steam boiler enters the sub-cylinder through the main steam pipe, and the sub-cylinder divides the steam into multiple paths. A part of the steam in the sub-cylinder is sent to the air inlet channel through the first steam branch pipe to heat the air passing through the air inlet channel, thereby increasing the temperature of the air entering the combustion chamber and improving the combustion efficiency of the coal; the steam cooled through the air inlet channel condenses into water and enters the return water collection box through the first return water pipe;

[0021] A part of the steam in the steam cylinder is sent to the mud dryer through the second steam pipe, so as to dry the sludge in the mud dryer and reduce the water content of the sludge. The steam or condensed water from the mud dryer enters the return water collection box through the second return water pipe;

[0022] Then the water in the return water collection tank enters the ion exchanger again through the first water pump and the secondary water return pipe, and then the water treated by the ion exchanger enters the water storage tank through the first pipe for storage, and the water in the water storage tank replenishes the water in the water replenishment tank of the boiler body through the second water pump and the water inlet pipe, and the water in the water replenishment tank enters the water-cooled wall through the descending channel, and the water-cooled wall absorbs heat to turn the water into steam and enters the steam bin, thereby forming a water recycling method, which can effectively improve the utilization of water and reduce the cost of sludge treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 for Figure 1 A partial enlarged view of A;

[0025] Figure 3 This is a connection diagram of the ion exchanger part.

[0026] Reference numerals: 10, air inlet channel; 11, combustion chamber; 12, rotary kiln; 13, secondary combustion chamber; 14, spray drying tower; 15, steam boiler; 16, mud dryer;

[0027] 151. Boiler body;

[0028] 20. Steam cylinder; 21. Return water collection box; 22. Ion exchanger; 23. Water storage tank; 24. Main steam pipe; 25. First steam branch pipe; 26. Second steam branch pipe; 27. First return water pipe; 28. Second return water pipe; 29. ​​First water pump; 210. Secondary water return pipe; 211. First pipeline; 212. Second water pump; 213. Water inlet pipe; 214. Sodium chloride solution supply box 215. Supply pipe; 2000. Steam chamber. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] The following references Figures 1 to 3 The utility model is described as follows:

[0031] A regeneration and softening water device for a sludge treatment system comprises an air inlet channel 10, a combustion chamber 11, a rotary kiln 12, a secondary combustion chamber 13, a spray drying tower 14 and a sludge dryer 16, a steam boiler 15 is provided between the upper end of the secondary combustion chamber 13 and the upper end of the spray drying tower 14; the steam boiler 15 is connected to a soft water regeneration device;

[0032] The steam boiler 15 comprises a boiler body 151, the interior of the boiler body 151 is divided into a steam tank and a water replenishment tank;

[0033] The soft water regeneration device includes a steam cylinder 20, a return water collection box 21, an ion exchanger 22 and a water storage tank 23; the steam cylinder 20 is connected to the steam bin through a main steam pipe 24, the steam cylinder 20 is connected to the air inlet channel 10 through a first steam branch pipe 25, and the steam cylinder 20 is connected to the dry mud machine 16 through a second steam branch pipe 26; the air inlet channel 10 is connected to a first return water pipe 27, and the dry mud machine 16 is connected to a second return water pipe 28, and the other ends of the first return water pipe 27 and the second return water pipe 28 are both connected to the return water collection box 21, and the return water collection box 21 is connected to a secondary water return pipe 210 through a first water pump 29, and the other end of the secondary water return pipe 210 is connected to the water inlet end of the ion exchanger 22; the water outlet end of the ion exchanger 22 is connected to the water storage tank 23 through a first pipe 211, and the water storage tank 23 is connected to a water inlet pipe 213 through a second water pump 212, and the other end of the water inlet pipe 213 is connected to the water replenishment bin.

[0034] The steam generated by the steam boiler enters the sub-cylinder through the main steam pipe, and the sub-cylinder divides the steam into multiple paths. A part of the steam in the sub-cylinder is sent to the air inlet channel through the first steam branch pipe to heat the air passing through the air inlet channel, thereby increasing the air temperature entering the combustion chamber and improving the combustion efficiency of coal; the steam cooled in the air inlet channel condenses into water and enters the return water collection box through the first return water pipe;

[0035] A part of the steam in the steam cylinder is sent to the mud dryer through the second steam pipe, so as to dry the sludge in the mud dryer and reduce the water content of the sludge. The steam or condensed water from the mud dryer enters the return water collection box through the second return water pipe;

[0036] Then the water in the return water collection tank enters the ion exchanger again through the first water pump and the secondary water return pipe, and then the water treated by the ion exchanger enters the water storage tank through the first pipe for storage, and the water in the water storage tank replenishes the water in the water replenishment tank of the boiler body through the second water pump and the water inlet pipe, and the water in the water replenishment tank enters the water-cooled wall through the descending channel, and the water-cooled wall absorbs heat to turn the water into steam and enters the steam bin, thereby forming a water recycling method, which can effectively improve the utilization of water and reduce the cost of sludge treatment.

[0037] A sodium chloride solution supply tank 214 is provided on one side of the ion exchanger 22 , and the sodium chloride solution supply tank 214 is connected to the ion exchanger 22 via a supply pipe 215 .

[0038] The sodium chloride solution supply tank 214 can supply sodium ions to the ion exchanger, and can replace magnesium ions and calcium ions in hard water;

[0039] At the same time, through the use of the above-mentioned circulating water, sodium ions can be recycled, thereby effectively reducing the amount of sodium chloride used and further reducing the sludge treatment cost.

[0040] The ion exchanger 22 is connected to a tap water supply pipe 215 .

[0041] The tap water supply pipe can supply water to the soft water regeneration device. Since the tap water is hard water, it needs to be softened by an ion exchanger.

[0042] The air inlet channel 10 and the mud dryer 16 are provided in plurality.

[0043] The steam dividing cylinder can divide the steam into multiple paths, and can supply steam to the air inlet channel and multiple mud dryers at the same time.

[0044] The air inlet channel 20 includes an inner tube and an outer tube arranged coaxially, the inner tube connects the blower and the combustion chamber; sealing plates are provided between the two ends of the outer tube and the two ends of the inner tube, the two sealing plates, the inner tube and the outer tube form a heating chamber, and the first steam branch pipe 25 and the first return water pipe 27 are both connected to the heating chamber.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A regeneration and softening water device for a sludge treatment system, comprising an air inlet channel (10), a combustion chamber (11), a rotary kiln (12), a secondary combustion chamber (13), a spray drying tower (14) and a sludge dryer (16), wherein a steam boiler (15) is provided between the upper end of the secondary combustion chamber (13) and the upper end of the spray drying tower (14); the characteristics are as follows: The steam boiler (15) is connected to a soft water regeneration device; The steam boiler (15) comprises a boiler body (151), wherein the interior of the boiler body (151) is divided into a steam tank and a water replenishment tank; The soft water regeneration device comprises a steam cylinder (20), a return water collection box (21), an ion exchanger (22) and a water storage tank (23); the steam cylinder (20) is connected to the steam bin via a main steam pipe (24), the steam cylinder (20) is connected to the air inlet channel (10) via a first steam branch pipe (25), and the steam cylinder (20) is connected to the mud dryer (16) via a second steam branch pipe (26); the air inlet channel (10) is connected to a first return water pipe (27), the mud dryer (16) is connected to a second return water pipe (28), and the first return water pipe ( The first water return pipe (27) and the second water return pipe (28) are both connected to a return water collection tank (21); the return water collection tank (21) is connected to a secondary water return pipe (210) via a first water pump (29); the other end of the secondary water return pipe (210) is connected to a water inlet end of an ion exchanger (22); the water outlet end of the ion exchanger (22) is connected to a water storage tank (23) via a first pipe (211); the water storage tank (23) is connected to a water inlet pipe (213) via a second water pump (212); the other end of the water inlet pipe (213) is connected to a water replenishment tank.

2. The regeneration and softening water device of a sludge treatment system according to claim 1, characterized in that: A sodium chloride solution supply tank (214) is provided on one side of the ion exchanger (22); the sodium chloride solution supply tank (214) is connected to the ion exchanger (22) via a supply pipe (215).

3. The regeneration and softening water device of a sludge treatment system according to claim 1, characterized in that: The ion exchanger (22) is connected to a tap water supply pipe (215).

4. The regeneration and softening water device of a sludge treatment system according to claim 1, characterized in that: The air inlet channel (10) and the mud dryer (16) are provided in plurality.

5. The regeneration and softening water device of a sludge treatment system according to claim 1, characterized in that: The air inlet channel (10) comprises an inner tube and an outer tube which are coaxially arranged, the inner tube being connected to the blower and the combustion chamber; sealing plates are provided between the two ends of the outer tube and the two ends of the inner tube, the two sealing plates, the inner tube and the outer tube enclose a heating chamber, and the first steam branch pipe (25) and the first water return pipe (27) are both connected to the heating chamber.

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