JPS6242078B2 - - Google Patents
Info
- Publication number
- JPS6242078B2 JPS6242078B2 JP57223521A JP22352182A JPS6242078B2 JP S6242078 B2 JPS6242078 B2 JP S6242078B2 JP 57223521 A JP57223521 A JP 57223521A JP 22352182 A JP22352182 A JP 22352182A JP S6242078 B2 JPS6242078 B2 JP S6242078B2
- Authority
- JP
- Japan
- Prior art keywords
- spout
- waste liquid
- combustion furnace
- hydrolysis tank
- liquid combustion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000002699 waste material Substances 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 31
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 238000002485 combustion reaction Methods 0.000 claims description 23
- 230000007062 hydrolysis Effects 0.000 claims description 22
- 238000006460 hydrolysis reaction Methods 0.000 claims description 22
- 239000000126 substance Substances 0.000 claims description 17
- 239000011734 sodium Substances 0.000 claims description 14
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 12
- 229910052708 sodium Inorganic materials 0.000 claims description 12
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 229910000462 iron(III) oxide hydroxide Inorganic materials 0.000 description 4
- 235000019738 Limestone Nutrition 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
Landscapes
- Gasification And Melting Of Waste (AREA)
- Paper (AREA)
Description
【発明の詳細な説明】
本発明はソーダ分を含む廃液特にパルプ廃液の
Fe2O3を使用する直接苛性化法によつて廃液燃焼
炉内の生成物質の加水分解槽への抜出し装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention applies to waste liquids containing soda, especially pulp waste liquids.
This invention relates to a device for extracting the produced substances in a waste liquid combustion furnace to a hydrolysis tank by a direct causticization method using Fe 2 O 3 .
従来例えばパルプ蒸解廃液を濃縮した黒液を回
収ボイラで有機物を燃焼させることによつて
Ma2CO3を生成させ、このNa2CO3を石灰石を焙
焼して得られたCa（OH）2によつて苛性化して
NaOHを得ているが、この場合石灰石並びに上記
Na2CO3のCa（OH）2による苛性化の際に得られ
るCaCO3の再使用のための焙焼には多量の燃料
を必要とする欠点があつた。 Conventionally, for example, black liquor was concentrated from pulp cooking waste and the organic matter was burned in a recovery boiler.
Ma 2 CO 3 is generated, and this Na 2 CO 3 is causticized with Ca(OH) 2 obtained by roasting limestone.
NaOH is obtained, but in this case limestone as well as the above
Roasting CaCO 3 obtained during causticization of Na 2 CO 3 with Ca(OH) 2 for reuse had the disadvantage of requiring a large amount of fuel.
なお直接苛性化においても例えばパルプ廃液を
濃縮して得られた濃縮廃液にFe2O3を流動又は接
触媒体とする廃液燃焼炉において、濃縮廃液を
800〜1000℃に燃焼せしめて得られた鉄酸ソーダ
を含む炉内生成物質を加水分解槽へ抜出す必要が
ある。 In addition, in direct causticization, for example, concentrated waste liquid obtained by concentrating pulp waste liquid is heated in a waste liquid combustion furnace using Fe 2 O 3 as a fluid or contact medium.
It is necessary to extract the in-furnace material containing sodium ferrate obtained by combustion at 800 to 1000°C to a hydrolysis tank.
本発明においては炉内生成物質の抜出し装置所
謂抜出用樋をスパウトという。 In the present invention, a so-called extraction gutter, which is a device for extracting substances produced in the furnace, is referred to as a spout.
本発明のスパウトは第１図、第３図に示す如
く、加水分解槽において生成した苛性ソーダ溶液
による液冷ジヤケツト付きスパウトである。 The spout of the present invention, as shown in FIGS. 1 and 3, is a spout equipped with a liquid cooling jacket using a caustic soda solution produced in a hydrolysis tank.
本発明は上記に鑑み、省資源、省エネルギーを
目的とする苛性アルカリ廃液燃焼炉の鉄酸ソーダ
を含む生成物質の抜出し装置を提供するものでソ
ーダ分を含む廃液を濃縮した濃縮廃液を酸化第２
鉄を流動又は接触媒体とする廃液燃焼炉におい
て、該濃縮廃液を燃焼せしめることにより廃液燃
焼炉で生成した鉄酸ソーダを含む炉内生物質を加
水分解槽へ抜き出すスパウトを１個又は複数個燃
焼炉に設置し、該スパウトの底面を階段形状とな
し、この階段の前立面及びスパウトの周壁上部に
数mm口径の複数個の噴孔を設け、加水分解槽内に
おいて生成した苛性ソーダ溶液を加水分解槽から
スパウトに循環させ、加水分解槽内苛性ソーダ溶
液によつて廃液燃焼炉内生成物質を冷却、溶解し
ながら、かつスパウトをも冷却しながら、加水分
解槽へ導くようならしめてなる廃液燃焼炉の炉内
生成物質抜き出し装置に関するものである。 In view of the above, the present invention provides an apparatus for extracting substances containing sodium ferrate from a caustic alkaline waste liquid combustion furnace for the purpose of saving resources and energy.
In a waste liquid combustion furnace that uses iron as a fluid or contact medium, one or more spouts are burned to extract biological materials in the furnace, including sodium ferrate, generated in the waste liquid combustion furnace by burning the concentrated waste liquid to a hydrolysis tank. The spout is installed in a furnace, and the bottom surface of the spout is shaped like a staircase. Multiple nozzle holes with a diameter of several mm are provided on the front elevation of the staircase and the upper part of the spout's peripheral wall to add water to the caustic soda solution produced in the hydrolysis tank. A waste liquid combustion furnace in which the substances produced in the waste liquid combustion furnace are circulated from the decomposition tank to the spout, and the substances produced in the waste liquid combustion furnace are cooled and dissolved by the caustic soda solution in the hydrolysis tank, and the substances are guided to the hydrolysis tank while also cooling the spout. The present invention relates to a device for extracting substances produced in a furnace.
次に図面によつて本発明を説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の液冷ジヤケツト付きスパウト
を備えた廃液燃焼炉内の生成物質を加水分解槽に
おいて生成した苛性ソーダ溶液をスパウトに循環
することによつて該苛性ソーダ溶液によつて加水
分解槽へ抜き出す装置の一実施例の概略説明図、
第２図は本発明の噴流水孔を備えたスパウトなら
びに循環水系統の一実施例を示すもので、第２図
に示す如く廃液燃焼炉１内の生成物質はその上部
に設けられた液冷ジヤケツト付きスパウト２を流
れて加水分解槽３に導入される。 FIG. 1 shows a process in which a caustic soda solution produced in a hydrolysis tank is circulated through the spout to convert the produced substances in a waste liquid combustion furnace equipped with a spout with a liquid cooling jacket according to the present invention to a hydrolysis tank. A schematic explanatory diagram of an embodiment of an extraction device,
FIG. 2 shows an embodiment of the spout and circulating water system of the present invention, which are equipped with jet water holes.As shown in FIG. It flows through the jacketed spout 2 and is introduced into the hydrolysis tank 3.
第３図は本発明のスパウトの断面図でスパウト
底面を階段形状とした一実施例である。 FIG. 3 is a sectional view of a spout according to the present invention, showing an embodiment in which the bottom surface of the spout is shaped like a step.
スパウトでは第３図に示す如く、噴流水孔より
廃液燃焼炉１からスパウト２へ流出した800〜
1000℃程度の炉内生成物質に冷却水を注加し、更
に加水分解槽３でアルカリになつた冷却水を循環
ポンプ４、循環用パイプ５によつてスパウト２に
循環して噴流水孔６，６′より廃液燃焼炉からの
流出生成物質に注加して冷却させる。 At the spout, as shown in Figure 3, 800~
Cooling water is poured into the reactor produced material at about 1000°C, and the cooling water, which has become alkaline in the hydrolysis tank 3, is circulated through the spout 2 through the circulation pump 4 and the circulation pipe 5 to the jet water hole 6. , 6' to the effluent product from the waste liquid combustion furnace to cool it.
循環水の温度は80〜90℃程度で廃液燃焼炉１か
ら流出する炉内生成物質並びにスパウト本体を充
分冷却させる効果を奏する。 The temperature of the circulating water is about 80 to 90°C, which is effective in sufficiently cooling the in-furnace generated substances flowing out from the waste liquid combustion furnace 1 and the spout body.
更にスパウト２における噴流水による鉄酸ソー
ダを冷却、並びに予溶解を充分にするためにスパ
ウト底面を階段７の形状とし、かつ階段の前立面
及び周壁上部に数耗口径の複数個の噴流水口６，
６′を設ける。 Furthermore, in order to sufficiently cool and pre-dissolve the sodium ferric acid by the jet water in the spout 2, the bottom of the spout is shaped like a staircase 7, and a plurality of jet water ports of several diameters are provided on the front elevation of the stairs and on the upper part of the peripheral wall. 6,
6' is provided.
本発明はパルプ廃液のみならず、ソーダ分を含
有する廃液例えばナイロン製造におけるカプロラ
クタムのソーダ廃液等の薬品回収炉、熱分解炉等
に使用することができる。 The present invention can be used not only for pulp waste fluids but also for chemical recovery furnaces, pyrolysis furnaces, etc. for waste fluids containing soda, such as soda waste fluids of caprolactam in nylon production.
本発明の効果を纏めると次の通りである。 The effects of the present invention can be summarized as follows.
(イ)廃液燃焼炉の生成物質抜き出しスパウトに設
けられた噴流水によつてスパウト表面上の鉄酸ソ
ーダを洗い流し、更に加水分解槽からスパウトに
循環させた苛性ソーダ溶液によつて鉄酸ソーダを
冷却し、予溶解させることによつて、容易に鉄酸
ソーダよりNaOHとFe2O3とを生成させ、更にス
パウト床面を階段形状としてその階段の前立面及
び周壁上部に数mm口径の複数個の噴孔を設け、こ
の噴流水圧によつて、廃液燃焼炉から排出された
鉄酸ソーダを連続的に加水分解槽へ導入させ、更
にこの噴流苛性ソーダ溶液が廃液燃焼炉からの流
出炉内生成物質のみならず、スパウト本体の冷却
にも寄与する利点があり、更に(ロ)、上記のスパウ
トに噴射される噴流水は加水分解槽からの循環ポ
ンプによつて、80〜90℃の循環苛性ソーダ溶液が
利用されるため、廃液燃焼炉で生成した鉄酸ソー
ダの団塊を粉砕してスパウト中における鉄酸ソー
ダの予溶解を助け、連続的に円滑に鉄酸ソーダを
加水分解槽に投入を可能ならしめ、さらに、上記
の冷却効果を加速するほか鉄酸ソーダの分解によ
つて生成したアルカリの濃度増加が期待される利
点もある。 (b) The sodium ferric acid on the surface of the spout is washed away by the jet water installed in the spout for extracting the generated substances from the waste liquid combustion furnace, and the sodium ferric acid is further cooled by the caustic soda solution circulated from the hydrolysis tank to the spout. By pre-dissolving it, NaOH and Fe 2 O 3 can be easily generated from sodium ferrate, and the floor of the spout can be shaped into a staircase, with multiple diameters of several millimeters on the front elevation and upper part of the surrounding wall of the staircase. The jet water pressure continuously introduces the ferric acid soda discharged from the waste liquid combustion furnace into the hydrolysis tank, and this jet caustic soda solution flows out from the waste liquid combustion furnace and is generated in the furnace. It has the advantage of contributing to the cooling of not only the substance but also the spout itself, and (b) the jet water injected into the spout is heated to 80 to 90°C by a circulation pump from the hydrolysis tank. Since a solution is used, the nodules of sodium ferrate produced in the waste liquid combustion furnace are crushed to help pre-dissolve the sodium ferrate in the spout, making it possible to continuously and smoothly feed the sodium ferrate into the hydrolysis tank. In addition to accelerating the above-mentioned cooling effect, it also has the advantage of increasing the concentration of alkali produced by the decomposition of sodium ferrate.
第１図及び第３図は本発明の廃液燃焼炉内の生
成物質を加水分解槽へ抜き出す装置スパウトのそ
れぞれ一実施例の概略説明図、第２図は本発明の
スパウトの循環水系統を示す一実施例である。
１……廃液燃焼炉、２……スパウト、３……加
水分解槽、４……循環ポンプ、５……循環用パイ
プ、６，６′……噴流水孔、７……スパウト底面
の階段、８……循環水入口、９……循環水出口。
Figures 1 and 3 are schematic explanatory diagrams of an embodiment of a device spout for extracting produced substances in a waste liquid combustion furnace to a hydrolysis tank according to the present invention, and Figure 2 shows a circulating water system of the spout according to the present invention. This is an example. 1... Waste liquid combustion furnace, 2... Spout, 3... Hydrolysis tank, 4... Circulation pump, 5... Circulation pipe, 6, 6'... Jet water hole, 7... Stairs on the bottom of the spout, 8... Circulating water inlet, 9... Circulating water outlet.
Claims (1)
化第２鉄を流動又は接触媒体とする廃液燃焼炉に
おいて、該濃縮廃液を燃焼せしめることにより、
廃液燃焼炉で生成した鉄酸ソーダを含む炉内生成
物質を加水分解槽へ抜き出す液冷ジヤケツト付き
スパウトを１個又は複数個廃液燃焼炉に設置し、
該スパウトの底面を階段形状となし、この階段の
前立面及びスパウトの周壁上部に数mm口径の複数
個の噴孔を設け、加水分解槽内苛性ソーダ溶液を
加水分解槽からスパウトに循環させ、加水分解槽
内苛性ソーダ溶液によつて廃液燃焼炉内生成物質
を冷却、溶解しながら、かつスパウトをも冷却し
ながら、加水分解槽へ導くようならしめてなる廃
液燃焼炉の炉内生成物質抜き出し装置。1. By burning the concentrated waste liquid containing soda in a waste liquid combustion furnace using ferric oxide as a fluid or contact medium,
One or more spouts with liquid cooling jackets are installed in the waste liquid combustion furnace to extract in-furnace substances including sodium ferrate produced in the waste liquid combustion furnace to a hydrolysis tank,
The bottom surface of the spout is shaped like a staircase, and a plurality of nozzle holes with a diameter of several mm are provided on the front elevation of the staircase and the upper part of the peripheral wall of the spout to circulate the caustic soda solution in the hydrolysis tank from the hydrolysis tank to the spout. A device for extracting substances produced in a waste liquid combustion furnace, which is configured to cool and dissolve the substances produced in the waste liquid combustion furnace by a caustic soda solution in the hydrolysis tank, and guide the substances to the hydrolysis tank while also cooling the spout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22352182A JPS59116491A (en) | 1982-12-20 | 1982-12-20 | Apparatus for withdrawing product in waste liquor combustionfurnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22352182A JPS59116491A (en) | 1982-12-20 | 1982-12-20 | Apparatus for withdrawing product in waste liquor combustionfurnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59116491A JPS59116491A (en) | 1984-07-05 |
| JPS6242078B2 true JPS6242078B2 (en) | 1987-09-07 |
Family
ID=16799439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22352182A Granted JPS59116491A (en) | 1982-12-20 | 1982-12-20 | Apparatus for withdrawing product in waste liquor combustionfurnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59116491A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5560020A (en) * | 1978-10-27 | 1980-05-06 | Toyo Pulp Kk | Alkaline waste liquor treating method |
-
1982
- 1982-12-20 JP JP22352182A patent/JPS59116491A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5560020A (en) * | 1978-10-27 | 1980-05-06 | Toyo Pulp Kk | Alkaline waste liquor treating method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59116491A (en) | 1984-07-05 |
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