TWM617023U

TWM617023U - Sludge dryer capable of dehumidifying circulating air in stages

Info

Publication number: TWM617023U
Application number: TW110206216U
Authority: TW
Inventors: 陳俊榮
Original assignee: 正加興業股份有限公司
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-09-11

Abstract

A sludge dryer capable of dehumidifying circulating air in stages comprises a sludge drying box, a heater, a rear-stage condensation dehumidifier and an ice water machine. The sludge drying box stores the water-containing sludge to be dried. The heater and the sludge drying box are connected by an air inlet pipe. The rear-stage condensation dehumidifier and the sludge drying box are connected by an exhaust pipe, and the rear-stage condensation dehumidifier and the heater are connected by a cold air pipe. The cold air pipe, the air inlet pipe and the exhaust pipe form a closed air circulation loop. The ice water produced by the ice water machine will flow into the rear-stage condensation dehumidifier to exchange heat with moist air entering the rear-stage condensation dehumidifier. It is characterized in that a front-stage condensation dehumidifier is arranged on the exhaust pipe and located between the rear-stage condensation dehumidifier and the sludge drying box, and the front-stage condensation dehumidifier is connected to a normal temperature cold water source. The moist air discharged from the sludge drying box will exchange heat with the cold water of the normal temperature cold water source before entering the rear-stage condensation dehumidifier to achieve the effect of staged condensation and dehumidification.

Description

循環空氣分段除濕的污泥乾燥機Sludge dryer with circulating air segmented dehumidification

本創作關於一種污泥乾燥機，尤指一種循環空氣分段除濕及/或分段加熱的污泥乾燥機。This creation is about a sludge dryer, especially a sludge dryer with circulating air segmented dehumidification and/or segmented heating.

工廠的廢水處理場通常使用污泥乾燥機將脫水機產出的污泥進一步乾燥，以實現污泥減量及資源化或安定化之目的。在工廠存在有廢熱之場所，如利用廢熱將乾燥介質之空氣加熱再利用冰水將乾燥介質經污泥乾燥床帶出之濕氣冷凝除濕，則可達密閉空氣循環污泥乾燥之目的。創作專利 I458926揭示一種密閉空氣循環污泥乾燥機，包含一污泥乾燥箱、一冷凝器、一熱交換裝置、一封閉式空氣循環迴路、一廢熱熱源及一冰水機，該封閉式空氣循環迴路連通該污泥乾燥箱、冷凝器與熱交換裝置，該廢熱熱源供應熱能至熱交換裝置，該冰水機用以移除該冷凝器所產生之熱能。該密閉空氣循環污泥乾燥機可利用工廠中的低階廢熱作為加熱空氣的熱源，具有節約能源以及將廢熱降溫的效果。然而，冰水機在製造冰水的過程需要大量能源，因而，該閉空氣循環污泥乾燥機利用17°C以下的冰水作為循環空氣的唯一冷凝水源，將具有另一個消耗大量能源的缺失。此外，該閉空氣循環污泥乾燥機在廢熱的使用方面，採用單一熱交換器來加熱循環空氣也會限制廢熱來源的選擇，特別是限制了低階廢熱來源的選擇。The wastewater treatment plant of the factory usually uses a sludge dryer to further dry the sludge produced by the dewatering machine to achieve the purpose of sludge reduction and recycling or stabilization. Where there is waste heat in the factory, if the waste heat is used to heat the air of the drying medium and then ice water is used to condense and dehumidify the moisture from the drying medium through the sludge drying bed, the purpose of sludge drying with closed air circulation can be achieved. The creation patent I458926 discloses a closed air circulation sludge dryer, which includes a sludge drying box, a condenser, a heat exchange device, a closed air circulation circuit, a waste heat source and an ice water machine, the closed air circulation The circuit connects the sludge drying box, the condenser and the heat exchange device, the waste heat source supplies heat energy to the heat exchange device, and the ice water machine is used to remove the heat energy generated by the condenser. The closed air circulation sludge dryer can use low-level waste heat in the factory as a heat source for heating air, and has the effects of saving energy and cooling waste heat. However, the ice water machine requires a lot of energy in the process of making ice water. Therefore, the closed-air circulation sludge dryer uses ice water below 17°C as the only source of condensed water for circulating air, which will have another deficiency that consumes a lot of energy. . In addition, in the use of waste heat in the closed-air circulation sludge dryer, the use of a single heat exchanger to heat the circulating air will also limit the selection of waste heat sources, especially the selection of low-level waste heat sources.

緣此，本創作主要目的在提供一種循環空氣分段除濕的污泥乾燥機，該污泥乾燥機允許封閉式空氣循環迴路中的循環空氣分段除濕及/或分段加熱，以更有效率的利用回收冷水及/或廢熱來源，達成節能的效果。For this reason, the main purpose of this creation is to provide a sludge dryer with segmented dehumidification of circulating air. The sludge dryer allows segmented dehumidification and/or segmented heating of circulating air in a closed air circulation loop for more efficient The use of recycled cold water and/or waste heat sources to achieve energy-saving effects.

本創作之循環空氣分段除濕的污泥乾燥機包含一污泥乾燥箱、一加熱器、一後段冷凝除濕器、及一冰水機。該污泥乾燥箱提供待乾燥的含水污泥存放，該污泥受熱後會產生潮濕空氣。該加熱器與污泥乾燥箱之間以一進氣管路連接。該後段冷凝除濕器與該污泥乾燥箱之間以一排氣管路連接，該後段冷凝除濕器與該加熱器之間以一冷風管路連接，該冷風管路、該進氣管路與該排氣管路組成一封閉式空氣循環迴路，該污泥所產生的潮濕空氣會從該排氣管路排出而在該空氣循環迴路內流動且依序經由該後段冷凝除濕器降溫除濕以及該加熱器加熱。該冰水機與該後段冷凝除濕器連接，且該冰水機產生的冰水會流入該後段冷凝除濕器內與進入該後段冷凝除濕器內的潮濕空氣進行熱交換，使含潮濕空氣凝結除濕。其特徵在於，有一前段冷凝除濕器設在該排氣管路上且位在該後段冷凝除濕器與該污泥乾燥箱之間，該前段冷凝除濕器連接一常溫冷水源，該常溫冷水源產生的冷水溫度大於冰水機的冰水溫度。從污泥乾燥箱排出的潮濕空氣在進入該後段冷凝除濕器之前會流經該前段冷凝除濕器，而與常溫冷水進行熱交換，達成在封閉式空氣循環迴路中具有分段冷凝除濕的效果。The sludge dryer for dehumidifying the circulating air in sections of this creation includes a sludge drying box, a heater, a post-condensation dehumidifier, and an ice water machine. The sludge drying box provides storage of the water-containing sludge to be dried, and the sludge will generate humid air after being heated. The heater and the sludge drying box are connected by an air inlet pipe. The rear-stage condensing dehumidifier and the sludge drying box are connected by an exhaust pipe, the rear-stage condensing dehumidifier and the heater are connected by a cold air pipe, the cold air pipe and the air inlet pipe are connected with The exhaust pipe constitutes a closed air circulation circuit. The humid air generated by the sludge will be discharged from the exhaust pipe and flow in the air circulation circuit and sequentially pass through the downstream condensing dehumidifier to cool down and dehumidify. The heater heats up. The ice water machine is connected to the rear-stage condensation dehumidifier, and the ice water produced by the ice-water machine flows into the rear-stage condensation dehumidifier and exchanges heat with the moist air entering the rear-stage condensation dehumidifier, so that the humid air is condensed and dehumidified . It is characterized in that a front-stage condensation dehumidifier is arranged on the exhaust pipe and is located between the rear-stage condensation dehumidifier and the sludge drying box, and the front-stage condensation dehumidifier is connected to a normal temperature cold water source, which generates The temperature of the cold water is greater than that of the chiller. The moist air discharged from the sludge drying box will flow through the front condensing dehumidifier before entering the back condensing dehumidifier, and exchange heat with cold water at room temperature to achieve the effect of segmented condensation and dehumidification in a closed air circulation loop.

在一實施例中，該冰水機的冰水溫度在攝氏5-17度之間，該常溫冷水源的冷水溫度在攝氏17-35度之間。In one embodiment, the ice water temperature of the ice water machine is between 5-17 degrees Celsius, and the cold water temperature of the normal temperature cold water source is between 17-35 degrees Celsius.

在一實施例中，在該空氣循環迴路上設有一風機以提供循環空氣在該空氣循環迴路內流動的動力。In one embodiment, a fan is provided on the air circulation circuit to provide power for circulating air to flow in the air circulation circuit.

在一實施例中，有一預加熱器設在該冷風管路上且位在該後段冷凝除濕器與該加熱器之間，使得從該後段冷凝除濕器流出的空氣在進入該加熱器之前會流經該預加熱器加熱升溫。In one embodiment, a pre-heater is provided on the cold air pipeline and is located between the rear condensing dehumidifier and the heater, so that the air flowing out of the rear condensing dehumidifier will flow through before entering the heater The pre-heater heats up.

在一實施例中，該加熱器的熱能係由一第一廢熱源供應，該預加熱器的熱能係由一第二廢熱源供應，該第二廢熱源的溫度小於該第一廢熱源的溫度。In one embodiment, the heat energy of the heater is supplied by a first waste heat source, the heat energy of the pre-heater is supplied by a second waste heat source, and the temperature of the second waste heat source is lower than the temperature of the first waste heat source .

在一實施例中，該第二廢熱源係再回收第一廢熱源之餘熱。In one embodiment, the second waste heat source recovers the waste heat of the first waste heat source.

關於本創作之其他目的、優點及特徵，將可由以下較佳實施例的詳細說明並參照所附圖式來了解。The other objectives, advantages and features of this creation can be understood from the detailed description of the following preferred embodiments with reference to the accompanying drawings.

現將僅為例子但非用以限制的具體實施例，並參照所附圖式就本創作之較佳結構內容說明如下：The specific embodiments are only examples but not for limitation, and the preferred structure content of the creation is described as follows with reference to the accompanying drawings:

參閱圖1、圖2，顯示依據本創作一實施例的循環空氣分段除濕的污泥乾燥機10，該污泥乾燥機10包括一污泥乾燥箱12、一加熱器14、一後段冷凝除濕器16、及一冰水機18。該污泥乾燥箱12提供待乾燥含水污泥20存放。該加熱器14與污泥乾燥箱12之間以一進氣管路22連接，使得經由該加熱器14加熱後的高溫乾燥空氣會經由該進氣管路22進入該污泥乾燥箱12內以帶走污泥20的水分。在本實施例中，該加熱器14的熱能是由一廢熱源24供應，該廢熱源24可以是例如空氣壓縮機所排出的壓縮空氣或是高溫水蒸氣等廢熱氣體，但也可以為其它廢熱能源。Referring to Figures 1 and 2, there is shown a sludge dryer 10 for dehumidifying circulating air in stages according to an embodiment of the invention. The sludge dryer 10 includes a sludge drying box 12, a heater 14, and a post-condensation dehumidification器16, and an ice water machine 18. The sludge drying box 12 provides storage of the water-containing sludge 20 to be dried. The heater 14 and the sludge drying box 12 are connected by an air inlet pipe 22, so that the high-temperature dry air heated by the heater 14 will enter the sludge drying box 12 through the air inlet pipe 22. Take away the moisture of the sludge 20. In this embodiment, the heat energy of the heater 14 is supplied by a waste heat source 24. The waste heat source 24 can be, for example, compressed air discharged from an air compressor or waste heat gas such as high temperature water vapor, but it can also be other waste heat. energy.

該後段冷凝除濕器16與該污泥乾燥箱12之間以一排氣管路26連接。當該污泥乾燥箱12內的含水污泥20受熱後會經由該排氣管路26排出高溫的潮濕空氣而進入該後段冷凝除濕器16內冷凝。在本實施例中，該排氣管路26的一端連接在該污泥乾燥箱12的頂部，該進氣管路22的一端連接在該污泥乾燥箱12的底部。再者，該後段冷凝除濕器16與該加熱器14之間以一冷風管路28連接，使得經由該後段冷凝除濕器16降溫除濕後的低溫乾燥空氣會經由該冷風管路28進入加熱器14中加熱升溫。該冷風管路28、該進氣管路22與該排氣管路26組成一封閉式空氣循環迴路30，使得污泥20所產生的潮濕空氣可在該空氣循環迴路30內流動且依序經由該後段冷凝除濕器16降溫除濕以及該加熱器14加熱升溫。此外，在該空氣循環迴路30設有一風機32以提供空氣在該空氣循環迴路30內流動循環的動力，在本實施例中，該風機32設在該排氣管路26上。The downstream condensing dehumidifier 16 and the sludge drying box 12 are connected by an exhaust pipe 26. When the water-containing sludge 20 in the sludge drying box 12 is heated, the high-temperature humid air is discharged through the exhaust pipe 26 and enters the rear condensing dehumidifier 16 to be condensed. In this embodiment, one end of the exhaust pipe 26 is connected to the top of the sludge drying box 12, and one end of the air intake pipe 22 is connected to the bottom of the sludge drying box 12. Furthermore, the rear-stage condensation dehumidifier 16 and the heater 14 are connected by a cold air pipe 28, so that the low-temperature dry air after being cooled and dehumidified by the rear-stage condensation dehumidifier 16 will enter the heater 14 through the cold air pipe 28 Heat up in the middle. The cold air pipe 28, the air inlet pipe 22 and the exhaust pipe 26 form a closed air circulation circuit 30, so that the humid air generated by the sludge 20 can flow in the air circulation circuit 30 and pass through The downstream condensing dehumidifier 16 cools and dehumidifies and the heater 14 heats up. In addition, a fan 32 is provided in the air circulation circuit 30 to provide power for air to flow and circulate in the air circulation circuit 30. In this embodiment, the fan 32 is arranged on the exhaust pipe 26.

該冰水機18連接該後段冷凝除濕器16以提供該後段冷凝除濕器16的冷凝用水。在一具體實施例中，該冰水機18可產生攝氏5-17度的冰水，該冰水會流過該後段冷凝除濕器16內而與進入該後段冷凝除濕器16內的潮濕空氣進行熱交換，使潮濕空氣降溫除濕變成乾燥低溫空氣。The ice water machine 18 is connected to the rear-stage condensing dehumidifier 16 to provide condensing water for the latter-stage condensing dehumidifier 16. In a specific embodiment, the ice water machine 18 can produce ice water at 5-17 degrees Celsius. The ice water will flow through the rear-stage condensation dehumidifier 16 and interact with the moist air entering the rear-stage condensation dehumidifier 16 Heat exchange makes the humid air cool and dehumidify into dry low-temperature air.

依據本創作的一主要特徵在於，該污泥乾燥機10更包括一前段冷凝除濕器34，該前段冷凝除濕器34設在該排氣管路26上且位在該後段冷凝除濕器16與該污泥乾燥箱12之間，且該前段冷凝除濕器34連接一常溫冷水源36以提供該前段冷凝除濕器34的冷凝用水。在一具體實施例中，該常溫冷水源36為例如一般工廠或事業單位的回收水或放流水。該常溫冷水源36所提供的常溫冷水溫度會隨著季節變化，一般在攝氏17-35度之間。該常溫冷水會流過該前段冷凝除濕器34內而與進入該前段冷凝除濕器34內的潮濕空氣進行熱交換，使潮濕空氣降溫除濕。據此，當該污泥乾燥箱12所排出的潮濕空氣依序流經該前段冷凝除濕器34與該後段冷凝除濕器16時，其中該常溫冷水源36的常溫冷水將移除前段露點溫度較高之循環空氣之水分，而該冰水機18的冰水則能移除後段露點溫度較低之循環空氣之水分，進一步降低循環空氣之絕對濕度，達成分段冷凝除濕以節省能耗的效果。According to a main feature of this creation, the sludge dryer 10 further includes a front-stage condensing dehumidifier 34. The front-stage condensing dehumidifier 34 is provided on the exhaust pipe 26 and is located between the rear-stage condensing dehumidifier 16 and the Between the sludge drying tanks 12 and the front-stage condensing dehumidifier 34 is connected to a normal temperature cold water source 36 to provide condensing water for the front-stage condensing dehumidifier 34. In a specific embodiment, the normal temperature cold water source 36 is, for example, recycled water or discharged water from a general factory or an institution. The temperature of the normal temperature cold water provided by the normal temperature cold water source 36 changes with the seasons, and is generally between 17-35 degrees Celsius. The cold water at room temperature will flow through the front-stage condensation dehumidifier 34 and exchange heat with the moist air entering the front-stage condensation dehumidifier 34, so that the humid air is cooled and dehumidified. Accordingly, when the humid air discharged from the sludge drying box 12 flows through the front-stage condensation dehumidifier 34 and the rear-stage condensation dehumidifier 16 in sequence, the room temperature cold water from the room temperature cold water source 36 will remove the dew point temperature of the front stage. High circulating air moisture, and the ice water of the ice water machine 18 can remove the moisture of the circulating air with a lower dew point temperature in the later stage, further reducing the absolute humidity of the circulating air, achieving the effect of segmented condensation and dehumidification to save energy. .

本創作第一實施例的污泥乾燥機10在實施上，如圖2中的箭頭所示，利用廢熱源24提供熱能給加熱器14，流經加熱器14的循環空氣會被加熱而成為含水量較低的高溫乾燥空氣，此高溫乾燥空氣會經由進氣管路22進入該污泥乾燥箱12內以帶走污泥20的水氣，而變成中溫潮濕空氣從進氣管路22排出；接著，此中溫潮濕空氣會流入該前段冷凝除濕器34內與該常溫冷水源36的常溫冷水進行熱交換而被冷凝除濕且部分潮濕空氣會凝結形成水滴；之後，從該前段冷凝除濕器34流出的空氣會流入該後段冷凝除濕器16內與該冰水機18的冰水進行熱交換而被冷凝除濕變成低溫乾燥空氣；接著，從該後段冷凝除濕器16流出的低溫乾燥空氣會經由該冷風管路28流入加熱器14加熱成為高溫乾燥空氣，再送入該污泥乾燥箱12內而循環使用。In the implementation of the sludge dryer 10 of the first embodiment of the invention, as shown by the arrow in Figure 2, the waste heat source 24 is used to provide thermal energy to the heater 14, and the circulating air flowing through the heater 14 will be heated to become The high-temperature dry air with low water content will enter the sludge drying box 12 through the air inlet pipe 22 to take away the moisture of the sludge 20, and become medium-temperature humid air and be discharged from the air inlet pipe 22. ; Next, the medium-temperature humid air will flow into the front condensing dehumidifier 34 to exchange heat with the normal temperature cold water of the normal temperature cold water source 36 to be condensed and dehumidified and part of the humid air will condense to form water droplets; then, from the front condensing dehumidifier 34 The outflowing air will flow into the rear-stage condensation dehumidifier 16 to exchange heat with the ice water of the ice water machine 18 and be condensed and dehumidified into low-temperature dry air; then, the low-temperature dry air flowing out of the rear-stage condensation dehumidifier 16 will pass through The cold air duct 28 flows into the heater 14 to heat it into high-temperature dry air, and then is sent into the sludge drying box 12 for recycling.

依據本創作的污泥乾燥機10是在封閉式空氣循環迴路30中設計有以常溫冷水源36做為冷凝水的前段冷凝除濕器34，可以有效節省傳統使用冰水機在封閉式空氣循環迴路中作為單一冷凝水的能源。具體而論，依據本創作的污泥乾燥機10的實際測試，在含水污泥20的凝結水為200公斤的一實施例中，經由該前段冷凝除濕器34所凝結的水約為92公斤，而經由該後段冷凝除濕器16所凝結的水約為108公斤。由於常溫冷水源36的常溫冷水不需要能耗，因而，本創作的污泥乾燥機10約可較傳統使用冰水機作為單一冷凝水的污泥乾燥機節省一半冷凝除濕用的能源。The sludge dryer 10 according to this creation is designed in the closed air circulation circuit 30 with a front-stage condensing dehumidifier 34 using a normal temperature cold water source 36 as condensate water, which can effectively save the traditional use of ice water machines in the closed air circulation circuit As a single condensate energy source. Specifically, according to the actual test of the sludge dryer 10 of the present invention, in an embodiment where the condensed water of the water-containing sludge 20 is 200 kg, the water condensed through the front-stage condensation dehumidifier 34 is about 92 kg. The condensed water through the rear-stage condensing dehumidifier 16 is about 108 kg. Since the room temperature cold water of the room temperature cold water source 36 does not require energy consumption, the sludge dryer 10 of the present invention can save about half of the energy used for condensation and dehumidification compared with a traditional sludge dryer that uses an ice water machine as a single condensate water.

圖3與圖4顯示本創作第二實施例的循環空氣分段除濕的污泥乾燥機10，在本實施例中，污泥乾燥機10更包含一預加熱器38，該預加熱器38設在該冷風管路28上且位在該後段冷凝除濕器16與加熱器14之間，使得從後段冷凝除濕器16流出的空氣在進入加熱器14之前會流經預加熱器38加熱升溫。預加熱器38的熱能是由一廢熱源40供應，該廢熱源40可以是溫度較低之低階廢熱。在一實施例中，加熱器14的廢熱源溫度設定在攝氏50~99度之間，預加熱器38的廢熱源溫度設定在攝氏30~95度之間。再者，在可行實施例中，該預加熱器38的廢熱源40係可再回收該加熱器14之廢熱源24之餘熱。依據本實施例，該污泥乾燥機10將可採用一個或多個廢熱源，其中溫度較低之廢熱源作為預加熱器38的熱能以預加熱循環空氣用，而溫度較高之廢熱源作為加熱器14的熱能以再加熱循環空氣用，達成充分利用工廠低階廢熱的效果。Figures 3 and 4 show a sludge dryer 10 for dehumidifying circulating air in a second embodiment of the invention. In this embodiment, the sludge dryer 10 further includes a pre-heater 38, which is provided with The cold air pipeline 28 is located between the rear condensing dehumidifier 16 and the heater 14, so that the air flowing from the rear condensing dehumidifier 16 will flow through the pre-heater 38 to heat up before entering the heater 14. The heat energy of the pre-heater 38 is supplied by a waste heat source 40, which can be low-level waste heat with a lower temperature. In one embodiment, the temperature of the waste heat source of the heater 14 is set between 50 and 99 degrees Celsius, and the temperature of the waste heat source of the pre-heater 38 is set between 30 and 95 degrees Celsius. Furthermore, in a feasible embodiment, the waste heat source 40 of the pre-heater 38 can recover the waste heat of the waste heat source 24 of the heater 14 again. According to this embodiment, the sludge dryer 10 can use one or more waste heat sources, of which a waste heat source with a lower temperature is used as the heat energy of the preheater 38 to preheat the circulating air, and a waste heat source with a higher temperature is used as The heat energy of the heater 14 is used for reheating the circulating air, achieving the effect of making full use of the low-level waste heat of the factory.

以上所述為本創作之較佳實施例之詳細說明與圖式，並非用來限制本創作，本創作之所有範圍應以下述之專利範圍為準，凡專利範圍之精神與其類似變化之實施例與近似結構，皆應包含於本創作之中。The above are the detailed descriptions and drawings of the preferred embodiments of the creation, and are not intended to limit the creation. All the scope of the creation should be subject to the following patent scope, where the spirit of the patent scope and similar modified embodiments And similar structures should be included in this creation.

10:污泥乾燥機10: Sludge dryer

12:污泥乾燥箱12: Sludge drying box

14:加熱器14: heater

16:後段冷凝除濕器16: Rear condensing dehumidifier

18:冰水機18: Ice water machine

20:污泥20: Sludge

22:進氣管路22: intake pipe

24:廢熱源24: Waste heat source

26:排氣管路26: Exhaust line

28:冷風管路28: Cold air pipeline

30:空氣循環迴路30: Air circulation circuit

32:風機32: Fan

34:前段冷凝除濕器34: Front condensing dehumidifier

36:常溫冷水源36: Cold water source at room temperature

38:預加熱器38: Pre-heater

40:廢熱源40: Waste heat source

圖1係本創作第一實施例之循環空氣分段除濕的污泥乾燥機的方塊圖。Fig. 1 is a block diagram of a sludge dryer for dehumidifying circulating air in stages according to the first embodiment of the invention.

圖2顯示圖1之污泥乾燥機的示意圖。Figure 2 shows a schematic diagram of the sludge dryer of Figure 1.

圖3係本創作第二實施例之循環空氣分段除濕的污泥乾燥機的方塊圖。Fig. 3 is a block diagram of a sludge dryer for dehumidifying circulating air in stages according to the second embodiment of the invention.

圖4顯示圖3之污泥乾燥機的示意圖。Figure 4 shows a schematic diagram of the sludge dryer of Figure 3.

10:污泥乾燥機 10: Sludge dryer

12:污泥乾燥箱 12: Sludge drying box

14:加熱器 14: heater

16:後段冷凝除濕器 16: Rear condensing dehumidifier

18:冰水機 18: Ice water machine

22:進氣管路 22: intake pipe

24:廢熱源 24: Waste heat source

26:排氣管路 26: Exhaust line

28:冷風管路 28: Cold air pipeline

30:空氣循環迴路 30: Air circulation circuit

32:風機 32: Fan

34:前段冷凝除濕器 34: Front condensing dehumidifier

36:常溫冷水源 36: Cold water source at room temperature

38:預加熱器 38: Pre-heater

Claims

一種循環空氣分段除濕的污泥乾燥機，包括：一污泥乾燥箱，其提供待乾燥的含水污泥存放，該污泥受熱後會產生潮濕空氣；一加熱器，其與污泥乾燥箱之間以一進氣管路連接；一後段冷凝除濕器，其與該污泥乾燥箱之間以一排氣管路連接，該後段冷凝除濕器與該加熱器之間以一冷風管路連接，該冷風管路、該進氣管路與該排氣管路組成一封閉式空氣循環迴路，其中該污泥所產生的潮濕空氣會從該排氣管路排出而在該空氣循環迴路內流動且依序經由該後段冷凝除濕器降溫除濕以及該加熱器加熱；一冰水機，其與該後段冷凝除濕器連接，該冰水機產生的冰水會流入該後段冷凝除濕器內與進入該後段冷凝除濕器內的潮濕空氣進行熱交換，使含潮濕空氣凝結除濕；其特徵在於，有一前段冷凝除濕器設在該排氣管路上且位在該後段冷凝除濕器與該污泥乾燥箱之間，且該前段冷凝除濕器連接一常溫冷水源，該常溫冷水源產生的冷水溫度大於該冰水機的冰水溫度，其中從該污泥乾燥箱所排出的潮濕空氣在進入該後段冷凝除濕器之前會流經該前段冷凝除濕器，而與該常溫冷水源的常溫冷水進行熱交換，達成在封閉式空氣循環迴路中具有分段冷凝除濕的效果。 A sludge dryer capable of dehumidifying circulating air in sections, including: A sludge drying box, which provides the storage of water-containing sludge to be dried, and the sludge will generate moist air when heated; A heater, which is connected to the sludge drying box by an air inlet pipe; A rear-stage condensing dehumidifier is connected with the sludge drying box by an exhaust pipe, the rear-stage condensing dehumidifier and the heater are connected by a cold air pipe, the cold air pipe and the air inlet pipe The air circuit and the exhaust pipe form a closed air circulation circuit, in which the humid air generated by the sludge will be discharged from the exhaust pipe and flow in the air circulation circuit, and the temperature will be lowered through the back-stage condensation dehumidifier in sequence Dehumidification and heating by the heater; An ice water machine, which is connected with the rear-stage condensation dehumidifier, the ice water produced by the ice-water machine flows into the rear-stage condensation dehumidifier and exchanges heat with the moist air entering the rear-stage condensation dehumidifier, so that the moist air is condensed Dehumidification It is characterized in that a front-stage condensation dehumidifier is arranged on the exhaust pipe and is located between the rear-stage condensation dehumidifier and the sludge drying box, and the front-stage condensation dehumidifier is connected to a normal temperature cold water source, and the normal temperature cold water source generates The cold water temperature is greater than the ice water temperature of the ice water machine, and the humid air discharged from the sludge drying box will flow through the front condensing dehumidifier before entering the rear condensing dehumidifier, and it is different from the normal temperature of the normal temperature cold water source. The cold water exchanges heat to achieve the effect of staged condensation and dehumidification in the closed air circulation loop.

依據申請專利範圍第1項之污泥乾燥機，其中該冰水機的冰水溫度在攝氏5-17度之間，該常溫冷水源的冷水溫度在攝氏17-35度之間。According to the sludge dryer of item 1 of the scope of patent application, the ice water temperature of the ice water machine is between 5-17 degrees Celsius, and the cold water temperature of the normal temperature cold water source is between 17-35 degrees Celsius.

依據申請專利範圍第1項之污泥乾燥機，其中在該空氣循環迴路上設有一風機以提供空氣在該空氣循環迴路內流動循環的動力。According to the sludge dryer according to the first item of the scope of patent application, a fan is provided on the air circulation circuit to provide the power for air to flow and circulate in the air circulation circuit.

如申請專利範圍第1至3項任一項所述之污泥乾燥機，其中有一預加熱器設在該冷風管路上且位在該後段冷凝除濕器與該加熱器之間，使得從該後段冷凝除濕器流出的空氣在進入該加熱器之前會流經該預加熱器加熱升溫。For the sludge dryer described in any one of items 1 to 3 in the scope of the patent application, a pre-heater is arranged on the cold air pipeline and is located between the downstream condensing dehumidifier and the heater, so that from the downstream The air flowing out of the condensing dehumidifier will flow through the pre-heater to heat up before entering the heater.

如申請專利範圍第4項所述之污泥乾燥機，其中該加熱器的熱能係由一第一廢熱源供應，該預加熱器的熱能係由一第二廢熱源供應，該第二廢熱源的溫度小於該第一廢熱源的溫度。The sludge dryer described in item 4 of the scope of patent application, wherein the heat energy of the heater is supplied by a first waste heat source, the heat energy of the pre-heater is supplied by a second waste heat source, and the second waste heat source The temperature of is less than the temperature of the first waste heat source.

如申請專利範圍第5項所述之污泥乾燥機，其中該第二廢熱源係再回收該第一廢熱源之餘熱。The sludge dryer described in item 5 of the scope of patent application, wherein the second waste heat source is to recycle the waste heat of the first waste heat source.

如申請專利範圍第4項所述之污泥乾燥機，其中該加熱器的廢熱源溫度設定在攝氏50~99度之間，該預加熱器的廢熱源溫度設定在攝氏30~95度之間。The sludge dryer described in item 4 of the scope of patent application, wherein the waste heat source temperature of the heater is set between 50 and 99 degrees Celsius, and the waste heat source temperature of the pre-heater is set between 30 and 95 degrees Celsius .